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Escudo de Buin

Buin

Región Metropolitana de SantiagoFounded 1844117.982 inhabitantsPoblación proyectada INE 2024217 km² of area543 inh./km²$47.103M ingreso municipalSINIM · ingreso total percibido · 2025
Profile today2050
The comuna in context · among 346 comunas
Society
+83%
22nd fastest population growth (since 2002)
Explore
Power
474 organizations
21st most organizations requesting lobby meetings with it
Explore
Population
+26,8%
Population would grow between now and 2050
Society
19,1%
Multidimensional poverty · 156th highest of 346
Finance
$399 thousand
per inhabitant per year · rank 256 of 346
Education
3,09%
School dropout rate · 36th highest in the country
Education
594,1 pts
above the national median in the PAES (576,9 pts)
Finance
300th
most dependent on the Common Fund of 340
Summary

What the comuna hasSource: OpenStreetMap

147 Squares and green areas
53 Schools
15 Health centers
10 Kindergartens
8 Pharmacies
7 Fire stations
5 Carabineros
4 Rodeo arenas (medialunas)
1 Universities
1 Libraries
1 Hospitals

Buin es una comuna y ciudad chilena ubicada en la Región Metropolitana, en el sector sur de la conurbación de Santiago. Y perteneciente a la provincia de Maipo. Se encuentra a solo 35 km al sur de la capital regional, siendo posible acceder a la comuna directamente a través de la Ruta Panamericana o Autopista del Maipo, o por el km 27 de la Autopista Acceso Sur a Santiago sin mayores complicaciones. Integra junto con las comunas de Calera de Tango, Paine y San Bernardo el Distrito Electoral N° 30 y pertenece a la 7.ª Circunscripción Senatorial. Buin limita al norte con la comuna de San Bernardo, al este, con la comuna de Pirque, al sur, con la comuna de Paine, y al oeste, con la comuna de Isla de Maipo.

Introductory text from Wikipedia, bajo licencia CC BY-SA.

Liveability index · EIU style

54.7 /100
Ver el ranking y simular
#96 of 346 · most liveable in the country (EIU weighting)
Safety53
Health66
Culture and environment52
Education43
Infrastructure55
AuthoritiesWho leads the comuna, its council, sessions and lobbying requests

Mayor · 2024-2028Source: DecideChile · SERVEL

Miguel Araya L.
CHILE VAMOS · UNION DEMOCRATA INDEPENDIENTE
34.950
votes (50.15%)
86.699
Electoral roll
90,44%
Turnout
Mayoral history · 8 terms
MA
Miguel Araya L.
2024-2028 · UNION DEMOCRATA INDEPENDIENTE
34.950
votes
ML
Miguel Leonardo Araya Lobos
2021-2024 · UDI
14.255
votes
RE
Rodrigo Etcheverry Duhalde
2008-2012 · UDI
15.994
votes
AB
Angel Bozan Ramos
2004-2008 · PPD
12.768
votes
AB
Angel Bozan Ramos
2000-2004 · PPD
12.129
votes
AB
Angel Bozan Ramos
1996-2000 · PPD
9.530
votes
AB
Angel Bozan Ramos
1994-1996 · PPD
3.199
votes
CE
Clemente Errázuriz Arnolds
1992-1994 · ILD
7.203
votes

SERVEL · TRICEL (1992-2008) · DecideChile (2024) · Wikidata (pre-1992)

Concejo MunicipalSource: DecideChile · SERVEL

TA
Tamara Aguilera C.
POR CHILE, SEGUIMOS · PARTIDO COMUNISTA DE CHILE
3.886
votes
DC
Diego Calderon G.
CHILE MUCHO MEJOR · PARTIDO DEMOCRATA CRISTIANO
3.845
votes
PF
Pedro Fuentes H.
CHILE VAMOS UDI-EVOPOLI E INDEPENDIENTES · UNION DEMOCRATA INDEPENDIENTE
3.310
votes
MS
Manuel Sanchez G.
CHILE VAMOS RENOVACIÓN NACIONAL - INDEPENDIENTES · RENOVACION NACIONAL
3.253
votes
AB
Alejandro Baudrand O.
REPUBLICANOS E INDEPENDIENTES · PARTIDO REPUBLICANO DE CHILE
3.101
votes
PS
Patricio Silva G.
CHILE MUCHO MEJOR · PARTIDO POR LA DEMOCRACIA
2.934
votes
RE
Rodrigo Etcheverry D.
CHILE VAMOS UDI-EVOPOLI E INDEPENDIENTES · INDEPENDIENTE
2.462
votes
JL
Julio Lobos C.
VERDES LIBERALES POR UNA COMUNA SEGURA · FEDERACION REGIONALISTA VERDE SOCIAL
1.441
votes

Sesiones

Última sesión11 de junio de 2026152 minWatch session

En una línea: El concejo aprobó 12 puntos de tabla —incluyendo la compra de vales de gas, obras en plaza y viviendas, y transacciones judiciales— mientras el debate más extenso giró en torno al incendio en empresa frigorífica del sector oriente y a graves irregularidades en la Corporación de Desarrollo Social.

Temas tratados

  • Actas 73, 74 y 75: aprobadas sin observaciones.
  • Plan Regulador Comunal: se informó el calendario de 4 jornadas de participación ciudadana temprana en distintas localidades.
  • Inmobiliaria con deuda millonaria: concejal planteó deuda de más de $1.000 millones con el municipio y preguntó por el estado de las acciones judiciales.
  • Incendio en empresa frigorífica (sector Buin Oriente): el alcalde informó acciones del COGRID, clases online para el Liceo 131, oficios a SEREMI, Fiscalía y Superintendencia de Medio Ambiente, y multa cursada.
  • Corporación de Desarrollo Social: debate sobre irregularidades, directorio sin nombramiento válido por el concejo, auditoría forense en curso y ampliación de querella criminal.

Acuerdos y votaciones

  • Vales de gas: aprobada adjudicación a Casco GLP S.A. por 5.500 vales de 15 kg, $115.637.060 IVA incluido. Unanimidad.
  • Mobiliario urbano plaza Villarrica: aprobada adjudicación a Ritter SpA por $52.955.000, plazo 40 días. Unanimidad.
  • Anticipo de subvención para retiro voluntario docente (María Cabrera, $7.677.343): aprobado. Concejal Silva se abstuvo (no queda claro en la transcripción).
  • Independización uniones domiciliarias población Arturo Beal: aprobada adjudicación a Construcciones Silox por $76.592.840, plazo 120 días. Unanimidad.
  • Nombre conjunto habitacional: aprobado dejar sin efecto nombre anterior y asignar "Pintor José Venturelli" (calle Bajo de Matte 01648). Unanimidad.
  • Patente de alcohol clase C (restaurant, Caribou SpA, sector Guindos): aprobada. Concejal Calderón votó en contra.
  • Traslado de patente de alcohol clase C (Entre Trenes SpA, de Linderos a Santa María 396): aprobado. Unanimidad.
  • Tres transacciones judiciales (causas rol 82-2025, 66-2025 y 72-2025): aprobadas por un total aproximado de $18.750.000 en cuotas. Unanimidad en los tres casos.
  • Proyecto CESOC en Alto Jaquel: aprobada autorización de intervención y compromiso de mantención. Unanimidad.
  • Rebaja contrato Festival Teatro a Mil (obra suspendida por lluvia): aprobada reducción de $7.500.000, quedando en $37.500.000. Unanimidad.

Plata y obras

  • Vales de gas: $115,6 millones (5.500 unidades, distribución en 8 localidades).
  • Plaza Villarrica: $52,9 millones en mobiliario urbano.
  • Independización de alcantarillado en 13 viviendas: $76,6 millones.
  • Transacciones judiciales: ~$18,75 millones en total.
  • Anticipo retiro voluntario docente: $7,67 millones.
  • Auditoría corporación: presupuesto disponible de $35 millones (licitación publicada).
  • Contrato Teatro a Mil reducido a $37,5 millones.
  • Se mencionó contrato de $460 millones por trato directo (ampliación liceo) como parte de irregularidades bajo investigación —dato aportado por concejal, no confirmado oficialmente en sesión.

Puntos de debate o controversia

  • Incendio empresa frigorífica: vecinos con olores insoportables, líquidos percolados a canal de regadío seco, clases online por imposibilidad de uso del Liceo 131. Concejales cuestionaron lentitud de respuesta de SEREMI y falta de información oportuna al concejo.
  • Directorio de la Corporación: concejal Calderón documentó que dos directores fueron nombrados el 30 de abril por el alcalde sin acuerdo del concejo, contraviniendo dictamen de Contraloría citado en la propia acta. El alcalde comprometió someter nombres a votación antes del 29 de junio. Discusión sobre validez de actos ya adoptados por ese directorio.
  • Auditoría corporación: concejales cuestionaron que la licitación publicada cubra solo finiquitos y no la corporación completa.
  • Solicitud de audiencia pública de organización "Entre Paréntesis": sin respuesta desde el 8 de mayo; debate sobre procedencia según ordenanza vigente.

Para seguir

  • Nombramiento de dos directores de la corporación por el concejo: plazo comprometido al 29 de junio.
  • Comisión reservada con directora jurídica sobre estado de juicios contra inmobiliaria deudora.
  • Ampliación de querella criminal contra la corporación: en trámite.
  • Entrega de 5.500 vales de gas: fecha por definir una vez recibidos en bodega.
  • Subvenciones pendientes (~17 organizaciones): pasan a comisión próximamente.
  • Ordenanza de participación ciudadana actualizada: sin fecha definida.
  • Regularización de redes sociales municipales y decreto de responsables: en proceso.
  • Actividades por ordenanza de personas mayores (junio y octubre): en planificación.
  • Paraderos en mal estado sector Alto Jaquel: oficio pendiente a Vialidad.

Summary generated by AI (claude-sonnet-4-6) from the official broadcast transcript · may contain inaccuracies

Official council minutesSource: CPLT · Active Transparency inventory (Law 20.285)

835 minutes publishedindex updated on 12-08-2026Municipal transparency
Recent minutes indexed

Documents indexed from the Transparency Portal (Law 20.285); they link to the PDF published by the municipality.

What the council resolvesSource: Official minutes · AI extraction (ongoing)

Resolutions extracted
563
of 237 minutes read
Money involved
$6.959.498.040.240
sum of resolutions with amounts
ResolutionTypeAmountVote
4.1 · Calificación como imprevisto u otras circunstancias debidamente calificadas para otorgar el trato directo del servicio de disposición final de residuos sólidos con la empresa Consorcio Santa Marta S.A.Tender
4.1 · Aprobar Reglamento actualizado de la Carrera Funcionaria del Personal de SaludRegulationunanimidad
4.4 · Aprobar transacción extrajudicial con Servicios Agrícolas LAM SpA por $650,724Settlement$650.724
4.3 · Aprobar transacción judicial con Guillermo Antonio Acuña Pezoa por $8,500,000 en cuatros cuotas mensualesSettlement$8.507.240
4.2 · Aprobar convenio de cooperación para el programa 'Quiero Mi Barrio' en las Villas Clotario Blest y Santa RitaTender
4.1 · Asignar nombres de conjunto habitacional, calles y pasajes para el proyecto 'Barrio Nuevo El Carmen'Otherunanimidad

Resolutions voted by the council, automatically extracted from the official minutes (extraction ongoing: coverage grows as the 94.917 indexed minutes are processed). May contain reading errors; the official document is the municipality's PDF.

Comptroller auditsSource: CGR · Municipal Observatory

Findingstotal
242
Highly complex
79
Audit reports
16
YearFindingsAltam.Compl.Median.Reports
20254311
20249611
202138161752
20203211
20193398143
201859287243

CGR severity classification · audit findings on the municipality and its corporations

Who requests meetings with the municipalitySource: InfoLobby · CPLT (Law 20,730)

  • cm
    Constructora Metropolitana S.A.
    Lobby / interest management · 56 audiencias · 2019–2024
  • IG
    Inmobiliaria Galilea Centro SpA
    Lobby / interest management · 46 audiencias · 2019–2024
  • IJ
    Inmobiliaria Jp S.A.
    Lobby / interest management · 27 audiencias · 2017–2026
  • IB
    Inmobiliaria Buin S.A.
    Lobby / interest management · 19 audiencias · 2017–2022
  • Ie
    Inmobiliaria e Inversiones Augusta Ltda.
    Lobby / interest management · 13 audiencias · 2018–2024
  • IP
    Inmobiliaria Parque Buin S.A.
    Lobby / interest management · 12 audiencias · 2020–2022
  • IA
    Inmobiliaria Angostura SpA
    Lobby / interest management · 11 audiencias · 2021–2022
  • IP
    Inmobiliaria Py S.A.
    Lobby / interest management · 10 audiencias · 2015–2024
  • SI
    Sinergía Inmobiliaria S.A.
    Lobby / interest management · 9 audiencias · 2018–2024
  • PC
    Proyecto Colaborativo el Roble SpA
    Lobby / interest management · 8 audiencias · 2021–2024
  • FB
    Fotovoltaica Boldo SpA
    Lobby / interest management · 8 audiencias · 2021–2022
  • IV
    Inmobiliaria Vigo SpA
    Lobby / interest management · 8 audiencias · 2017–2019
  • FI
    Fundacion Invica
    Lobby / interest management · 8 audiencias · 2020–2023
  • WC
    Walmart Chile S.A.
    Lobby / interest management · 7 audiencias · 2016–2022
  • CS
    Carran S.A.
    Lobby / interest management · 7 audiencias · 2019–2023
  • EC
    Empresa Constructora Agua Santa S.A.
    Lobby / interest management · 6 audiencias · 2019–2025
  • SA
    Sociedad Anonima Viña Santa Rita
    Lobby / interest management · 6 audiencias · 2023–2024
  • PC
    Pj Chile SpA
    Lobby / interest management · 6 audiencias · 2019–2020
  • GS
    Granada SpA
    Lobby / interest management · 6 audiencias · 2021–2023
  • IE
    Inmobiliaria e Inversiones Cugat Ltda.
    Lobby / interest management · 6 audiencias · 2020–2024
and 450 more organizations that requested meetings

Organisations that registered Lobby Law meetings with this municipality. Registering the meeting is mandatory for the official, so the list shows who asked to be heard, not whether they got anything.

PopulationWho lives here, how they study, their healthcare and more

Population and living conditionsSource: INE · CENSO · MINEDUC · ADIS

Population trend

65.549
inhabitants
119.885
inhabitants
20022025

How it has changedSource: Official INE series 2002–2026 (2017 base).

See the full trajectory to 2050
Since 2002
+86%
inhabitants
Estimated population 2050
154.335
+14% vs. 2035 (135.353)
Over 60 · 2050
25,05%
18,99% in 2035 · +6 pts of ageing

INE projects comuna population only through 2035; the 2050 values are an own estimate by the monitor, anchored to the official INE 2050 national total (21,626,079 inhab, 32.1% aged 60+). Not an official comuna figure.

IndicatorValueSource
Homes with public water supply (2017 Census)95,01 %CENSO 2017 2017
School disengagement (leaves the system)1,8 %MINEDUC 2023
School enrollment1.230 studentsMINEDUC · aggregated by hexagons 2024
Municipal enrollment31,3 %MINEDUC · aggregated by hexagons 2024
PAES reading comprehension (DEMRE)594,1 ptsDEMRE · MINEDUC datos abiertos 2026
PAES mathematics M1 (DEMRE)617,9 ptsDEMRE · MINEDUC datos abiertos 2026
poblacion_censo116.969 inh.2024 Census 2024
Income poverty (CASEN 2022)4,4 %CASEN 2022 · SAE Observatorio MDSF 2022
Pobreza multidimensional (CASEN 2022)19,1 %CASEN 2022 · SAE Observatorio MDSF 2022
Indigenous peoples6,52 %2024 Census 2024

The PAES year is that of the admission process: the test is sat in November of the previous year. The average covers only those who registered to apply to university —not every secondary-school graduate— and groups them by the comuna of the school they graduated from, not by where the student lives. Here it rests on 1.622 students registered for the PAES.

Registro Social de Hogares

People in the RSH
105.058
54.828 households
Households in the most vulnerable 40%
28.707
52% of RSH households
Female-headed households
54%
29.473
Elderly (60+)18.54618%
Children and adolescents (<18)25.51424%
Foreign nationals4.9175%
Belonging to indigenous peoples4.8305%
People with moderate/severe dependency1.6062%
Single-person households27.13149%

A monthly administrative snapshot of the Social Household Registry (self-registration to access benefits), as of abril 2026. The "bracket 40" is the socioeconomic rating of the most vulnerable 40%. It is a registry, not a survey: it complements CASEN (biennial) with fresh data, but well-off comunas under-register. Source: ADIS, Ministry of Social Development and Family.

School educationSource: MINEDUC Open Data 2025

School enrollment
23.857
51 schools
Students per teacher
14,4
1.658 teachers
national median: 10,15
Average attendance
90,6%
national median: 89,8%
Priority studentsSEP
48,9%
socioeconomic vulnerability
national median: 66,8%
Where they study · by provider
Public (municipal + SLEP) 43%Private subsidized 38%Private paid 19%
Pass rate
98,3%
national median: 98,2%
Dropoutschool withdrawal
3,09%
dropout during the year
national median: 1,77%

Aggregate of all the comuna's schools (RBD → comuna). Pass/withdrawal and attendance are from the 2025 school year. SIMCE is not published as open data (managed by the Quality Agency, by request only); the available quality proxy is passing, dropout and attendance. The PAES result appears in the social section.

Municipal healthcare (primary care)Source: SINIM · MINSAL / FONASA

CESFAM
3
Clinics
0
Rural health posts
4
FONASA enrollees
100.813
85% of the population
Doctors employed
45
Health staff by contract type
Permanent staff: 296Contract staff: 224Fee contracts: 9
Primary-care medical visits · per year
71.725
114.270
20102025
Medical specialties served · 16 in the comuna (public system)
Internal MedicineAdult PsychiatryAdult General SurgeryAdult Orthopedics and TraumaAdult GynecologyObstetricsChild PsychiatryDermatologyPediatricsOtorhinolaryngologyAdult CardiologyAdult UrologyAdult GastroenterologyAnesthesiologyAdult NeurologyAdult Respiratory Medicine

Specialties with services recorded at the comuna's public facilities (REM DEIS, 2024). These are services performed, not doctor headcount. Excludes the private network.

Comprehensive home visits · per year
3.036
2.171
20192024

REM-26 section A (DEIS/MINSAL): comprehensive family visits, summed across the comuna's facilities. The last year is partial while DEIS consolidates monthly reports.

Comuna's primary-care centers · FONASA 2025 enrollees (100.352 in total)
CenterTypeProvider typeEnrollees% brackets A-B
Centro de Salud Familiar Héctor GarcíaFamily Health Center (CESFAM)Municipal44.16554%
Centro de Salud Familiar MaipoFamily Health Center (CESFAM)Municipal17.19658%
Centro de Salud Familiar Alto JahuelFamily Health Center (CESFAM)Municipal10.74156%
Posta de Salud Rural LinderosCommunity Family Health Center (CECOSF)Municipal7.08357%
Centro Comunitario de Salud Familiar Dr. Héctor GarcíaCommunity Family Health Center (CECOSF)Municipal6.95059%
Posta de Salud Rural VilucoRural Health Post (PSR)Municipal5.65462%
Posta de Salud Rural Valdivia de PaineRural Health Post (PSR)Municipal3.74466%
Posta de Salud Rural los MorrosRural Health Post (PSR)Municipal3.19658%
Posta de Salud Rural el RecursoRural Health Post (PSR)Municipal1.62363%

FONASA brackets A-B ≈ lowest incomes (A: without resources). Source: FONASA, as of Dec 31, 2025, DEIS code.

Costs · 2025
Health spending accrued: $20.703.798.000 ($205.368/enrollee)MINSAL per capita: $14.501.612.000Municipal contribution: $165.000.000

Indigenous peoplesSource: 2024 Census (INE) · CONADI via IDE SMA

Indigenous population
7.628
6.5% of the census population (Census 2024)
PeoplePeople% of total
Mapuche7.10093.1%
Diaguita1922.5%
Aymara1351.8%
Quechua640.8%
Otro540.7%

2024 Census: people who consider themselves as belonging to an indigenous people (small counts are suppressed for confidentiality at the source and not shown). Communities: CONADI national registry as of March 2024 — Araucanía and Los Lagos not refreshed in that update, the count is a floor. Land grants: 2022 registry.

Community organizationSource: RPJSFL Civil Registry (Law 20.500/19.418) · as of Jun 2026

Active neighborhood councils
137
Councils per 1,000 inhabitants
1.2
density of territorial organization
Non-profit organizations
947
the entire active civil fabric
Committees (water, housing, progress)
273
Sports
100
Social and aid
93
For the elderly
47
Cultural
26
Foundations and corporations
12
Religious
6
Trade associations and cooperatives
5
Fire brigades
1

All the comuna's active non-profit legal entities (Law 20.500 / 19.418), classified by organization name. It portrays the civil fabric: not just neighborhood councils, also committees, sports clubs, cultural and elderly groups, foundations and fire brigades.

5 Local media · 3 Comunitaria · 2 FMSource: SUBTEL · broadcasting licences · Regional Media Survey (MSGG)

Local mediaTypedial
AFAMANDA FMFM94.9 FM
CCARAMELOFM103.7 FM
ACAgrupacion Cultural y Folclorica Compaces de Maipo · holderComunitaria107.5 FM
ACAgrupacion Cultural y Social Nueva Era 2000 · holderComunitaria106.3 FM
CdClub de Amigos de la Cueca · holderComunitaria107.1 FM

The dial (frequency) of every FM, AM and community radio with a studio in the comuna (SUBTEL, active sound broadcasting concessions). National networks appear in their headquarters' comuna, not necessarily where they broadcast. When SUBTEL records no brand name, its holder (the concession holder).

Foreign-born populationSource: 2024 Census · INE

Foreign nationals
5.960
5,1% of the census population (Census 2024)
Main origin
Venezuela
2.719 people · 46% of the foreigners
Main countries of origin
2.719 Venezuela
611 Colombia
516 Haití
506 Perú

International immigrants per the 2024 Census (people born outside Chile living in the comuna). Nationwide they are 1,608,650 people, 8.8% of the population.

Housing and housing deficitSource: MINVU (Encampment Registry + 2024 Census deficit + subsidies) · INE

Families in informal settlements
372
8 encampments (2024 Registry)
Housing deficit
2.233
5,9% of the comuna's households
Housing permits · 2024
1.433
94.759 m² · new construction
Subsidies Integrated System · DS01
2.760
paid · 2011–2026
Subsidies Solidarity Fund · DS49
1.092
beneficiaries · 2012–2023
Subsidies Rental · DS52
107
paid · 2014–2024

Encampments: MINVU National Registry 2024 (irregular settlements and the families living in them). Quantitative deficit: homes missing per the 2024 Census (doubling-up + unrecoverable overcrowding). Permits: new homes authorized by the Works Directorate in 2024 (INE) — measures future construction, not stock. Subsidies: MINVU by application comuna — DS49 accrues beneficiaries by resolution year; DS01 and DS52 accrue payments by application cohort (national totals in the source file differ ~1–6% from the comuna sum; the comuna series is published).

What the homes are like

67.780homes · by type (2017)
House
36.076 · 98.4%
House
30.210 · 97.1%
Shack/hut/shanty
452 · 1.5%
Apartment
314 · 0.9%
Room in old house/tenement
233 · 0.7%
Other private
145 · 0.5%
Shack/improvised dwelling
131 · 0.4%
Other private
84 · 0.2%
Room in old house/tenement
62 · 0.2%
Apartment
60 · 0.2%
Mobile
9 · 0%
Traditional/indigenous dwelling
2 · 0%
Mobile
2 · 0%
75%owner-occupied · tenure (2002)
Owned outright
7.736 · 52.3%
Owned, being paid off
3.343 · 22.6%
Rented
1.833 · 12.4%
Provided for work
1.109 · 7.5%
Free of charge
779 · 5.3%

Housing type: 2017 Census · tenure: 2002 Census (INE).

Elderly careSource: Chile Cuida · National Assets / SENAMA

Long-stay residencesELEAM
5
Beds
102
5,6 per 1,000 over-60s

Long-stay facilities for the elderly registered in Chile Cuida. Comunas without ELEAM send their elders to other comunas. With projected ageing (see Demographic projection), this capacity defines whether one can age in one's own comuna.

ResourcesBudget, spending, municipal procurement and more

Budget and revenue sourcesSource: SINIM · SUBDERE

Total revenue · 2025
$47.102.601.000
Own revenue
$14.544.068.000
31% of the total
Municipal Common Fund
$6.654.131.000
14% of the total
State transfers
$21.039.114.000
45% of the total
Ingreso total y desglose de ingresos propios

Total revenue · trend (2001–2025)

$2.876.850.000
$47.102.601.000
20012025

Own revenue breakdown (IPP) · 2025

35.3%
20.5%
12.8%
6.6%
24.8%
Property tax$5.129.431.000
Business licenses$2.984.908.000
Vehicle permits$1.861.477.000
Cleaning fees$958.875.000
Other own revenue$3.609.377.000
Special-law revenues · 2025
Mining licenses (Law 19.143): $20.217.000

Distributed by law to specific comunas; they arrive via transfers.

Revenue by sector · 2025
46.1%
33.6%
20.3%
Municipal$47.102.601.000
Education$34.375.280.000
Health$20.784.450.000
Municipal Common Fund balance · 2025
Net recipient: it receives $3.249.866.000 more than it contributes.
Evolución por fuente de ingreso

Permanent own revenue (IPP) · trend

$1.716.854.000
$14.544.068.000
20012025

FCM received · trend

$677.501.000
$6.654.131.000
20012025

State transfers · trend

$129.843.000
$21.039.114.000
20012025

Municipal spending and budget executionSource: SINIM · SUBDERE

Current budget · 2025
$54.967.388.000
Accrued spending · 2025
$47.937.747.000
Execution rate
87.2%
Unexecuted: $7.029.641.000
Medium execution: it executed 87.2%. Left unspent: $7.029.641.000.

Accrued spending · trend

$2.981.038.000
$47.937.747.000
20012025

Distribution by management area · 2025

75.7%
16.8%
Internal management$36.269.687.000
Community services$8.069.262.000
Social programs$2.598.453.000
Municipal activities$240.673.000
Recreational programs$400.953.000
Cultural programs$358.719.000

What the budget is spent on · 2025

Spending lineAmount% of spending
Municipal healthcare (primary care) · comuna health-sector spending$20.703.798.00043.2%
Transfers to health$19.582.392.00040.8%
Goods and services (operations) · supplies, contracts, maintenance$9.051.699.00018.9%
Municipal personnel · municipal wages and fees$6.822.314.00014.2%
Cleaning, garbage and landfills · waste collection and disposal$3.579.199.0007.5%
Transfers to education$1.264.370.0002.6%
Electricity (facilities)$1.254.254.0002.6%
Investment (works and projects)$682.449.0001.4%
Water (facilities)$368.293.0000.8%
Street lighting$226.624.0000.5%
Councillor stipends$110.724.0000.2%
Travel allowances$5.023.0000.0%
Commissions and representation$2.638.0000.0%

Share of total accrued spending. Lines overlap (personnel sits inside several areas), so they don't add to 100%. Source: SINIM.

Personal y dotación municipal

Spending composition · 2025

14.2%
18.9%
66.9%
Personnel (Subt. 21)$6.822.314.000
Goods and services (Subt. 22)$9.051.699.000
Others$32.063.734.000

Personnel by contract type · 2025

37.6%
23.0%
35.4%
Permanent staff$4.015.938.000
Contract staff$2.458.726.000
Fee contracts$347.650.000
Labor Code$86.992.000
Community progs.$3.784.279.000

Municipal headcount · 2023

57.1%
40.8%
Permanent staff133
Contract staff95
Fee contracts5
Total: 233 staffFee contracts: 2.1% of the headcountWomen: 42.1%Professionalization: 30.3%
Cost/staffer permanent: $26.132.624/yearCost/staffer contract: $17.634.926/yearCost/staffer fees: $66.078.400/year

Municipal staff by contract status (SINIM, 2023). Cost per staffer = annual spending of the type ÷ same-year headcount.

Inversión, servicios básicos y obras

Investment and authorities' expenses · 2025

Municipal investment: $682.449.000 (1.4% of spending)Councillor stipends: $110.724.000Travel allowances: $5.023.000Commissions and representation: $2.638.000

Basic and general services · 2025

Garbage and landfills: $3.579.199.000Street lighting: $226.624.000Electricity: $1.254.254.000Water: $368.293.000

Final works approvals (DOM) · per year

83
1.578
20012025

Building permits issued · per year

88
64
20122025

What it buys · Mercado PúblicoSource: ChileCompra · open data

Open profile in Monitor Mercado Público
Historic amount
$78.433.432.108
Purchase orders
15.949

Purchase-order amount · trend

$334.679.036
$5.392.258.779
20072026
Top suppliersAmountPOs
Dimension S.A.$10.005.936.10375
Ingenieria y Construccion Mtv SpA$3.158.997.0501
Constructora Lima$2.895.469.6761
Crecer SpA$2.050.608.02522
Ingenieria y Construccion Ricardo Rodriguez y Cia Ltda.$2.030.575.192116
Genco S.A.$2.027.861.13627
Servicios de Seguridad Arte Security Limitada$1.299.003.51143
Empresa Constructora Santa Elena Ltda.$1.198.420.0831

Purchase mechanism · 2026

Tender $2.976.854.66055%
Direct award discretionary$1.613.365.94730%
Agile Purchase $458.871.7929%
Framework Agreement $343.166.3816%

Companies and economic activitySource: SII · company statistics and roster (domicile/HQ)

Registered companies
8.595
domiciled in the comuna
Dependent workers
32.755

Pyramid by sales bracket

58.4%
15.5%
23.8%
Micro (≤2,400 UF)5.020 companies
Small (≤25k UF)1.328 companies
Medium (≤100k UF)148 companies
Large (>100k UF)57 companies
No sales/no info2.042 companies

Largest companies domiciled in the comuna

CompanyLine of businessSales bracketWorkers
Aconcagua Foods S.A.INDUSTRIA MANUFACTURERALarge 4 (>1M UF)2.820
Corp de Desarrollo Social de BuinCOMERCIO AL POR MAYOR Y AL POR MENOR; REPARACLarge 4 (>1M UF)2.119
Metalpren Chile SpAINDUSTRIA MANUFACTURERALarge 4 (>1M UF)277
Molino Linderos S aINDUSTRIA MANUFACTURERALarge 4 (>1M UF)99
Agrofruta Sociedad AnonimaCOMERCIO AL POR MAYOR Y AL POR MENOR; REPARACLarge 4 (>1M UF)35
Gestion de Exportaciones Fruticolas S.A.COMERCIO AL POR MAYOR Y AL POR MENOR; REPARACLarge 4 (>1M UF)11
Cv Trading S.A.COMERCIO AL POR MAYOR Y AL POR MENOR; REPARACLarge 4 (>1M UF)3
Agricola Convento Viejo SpAAGRICULTURA, GANADERIA, SILVICULTURA Y PESCALarge 3245
Diana Food Chile SpAINDUSTRIA MANUFACTURERALarge 3122
Friofort S aTRANSPORTE Y ALMACENAMIENTOLarge 3101

SII roster of legal entities (public). Due to tax secrecy sales come in brackets, never amounts. The comuna is that of the domicile/HQ: operations may be elsewhere.

Investment in SEIA projects

Under review
1
US$ 0 M declared
Approved last 5 years
20
US$ 609 M declared
Construction jobsapproved 5 yrs
2.529
peak labor
ProjectOwnerStatusInvestment (US$M)Constr. jobs
Sistema de Almacenamiento de Energía y Línea de Transmisión Eléctrica DIABess Metropolitana SpAApproved22580
Centro Logístico Puerto VilucoDIAPuerto Viluco S.A.Approved80600
Ampliación Proyecto Inmobiliario Los Almendros de BuinDIANinhue Desarrollo Inmobiliario SpAApproved74,263240
Conjunto Habitacional Viñedos de Alto Jahuel.DIAInversiones Don Víctor SpAApproved62100
Los Parques de MaipoDIAViviendas Económicas San Luis S.A.Approved40170
Proyecto Inmobiliario DS 19 Santa Martina de BuinDIAInmobiliaria Santa Martina SpAApproved28500
Subestacion Electrica Seccionadora LinderosDIASociedad Austral de Transmisión TroApproved16,59100
Loteo Pintor José VenturelliDIAConavicoopApproved16,5180
Parque Solar Fotovoltaico El PeralDIAPsf el Peral SpAApproved1260
Parque Solar Fotovoltaico RucapaineDIAEnergia Renovable Rucapaine SpAApproved1260
Planta Solar La PuntillaDIAPlanta Solar la Puntilla S.PA.Approved1060
Parque Fotovoltaico El CapitánDIASolar Ti Cuarenta y Tres SpAApproved10100

Investment DECLARED by the owner upon entering SEIA (not necessarily materialized; the RCA expires after 5 years without works). Multi-comuna projects: prorated investment, jobs counted in full. Jobs = declared peak labor (source PRISMA/SOFOFA). Source: e-SEIA + PRISMA.

TerritoryClimate, biodiversity, national heritage, SEIA-approved projects and more

Roads and motorwaysSource: OpenStreetMap · 2026 snapshot

Kilometres of trunk road
51 km
Motorways and trunk roads crossing the comuna

Road infrastructure of the MOP and concession holders, not the municipality: it measures how much highway crosses the territory, not municipal management. Only comunas with roads of this category are counted.

Environment and air qualitySource: MMA · SINCA + PPDA + RETC

No air monitoring station (SINCA) in the comuna.

vigentemixtoMP2,5; MP10; O3
PPDA Región Metropolitana
DS 31/2017 · published 2017 · see plan

Zone with decontamination plan PPDA Region Metropolitana de Santiago · critical pollutant MP2.5 / MP10 / O3

Air emissions from industrial sources · tons/year (RETC 2020)
2 t MP10
2 t MP2,5
2 t Material particulado
1 t SO₂

Air quality observed at MMA's SINCA stations within the comuna (2020); when there are several, the worst is shown. The scale compares the annual average with the WHO 2021 guideline (PM2.5 = 5 · PM10 = 15 µg/m³, international health reference) and the Chilean annual primary standard (PM2.5 = 20 · PM10 = 50 µg/m³): green within the WHO guideline, amber between guideline and standard, red above the national standard. "Days above standard" use the 24-h daily standard (PM2.5 = 50 · PM10 = 150 µg/m³). RETC emissions = declared point sources (industry/energy), excludes diffuse sources like residential firewood.

Biodiversity and protected areasSource: SNASPE · SEIA baselines

Nearest protected wilderness area (SNASPE)
Rio ClarilloNational Reserveat 20.8 km

Species of flora, fauna and funga documented in the baselines of the projects evaluated by SEIA in the comuna — what their environmental studies recorded in the territory. Conservation status (RCE/IUCN) and Chilean endemism are flagged.

74
Species
45
Flora
29
Fauna
25
In conservation status
23
Endemic to Chile
Species in conservation category
RuilNothofagus alessandriiENPochaCheirodon pisciculusVUBelloto del norte, belloto (genérico)Beilschmiedia miersiiVUBelloto del surBeilschmiedia berteroanaENPitaoPitavia punctataENQueuleGomortega keuleENRana chilenaCalyptocephalella gayiVUPejerrey chilenoBasilichthys australisVUSapo de ruloRhinella aruncoVUPejerrey chilenoBasilichthys microlepidotusVULagartija de schröederLiolaemus schroederiVUCarmelitaPercilia gillissiENHuillipatagua, naranjillo, pataguaCitronella mucronataVUGuayacánPorlieria chilensisVUBagrecitoTrichomycterus areolatusVUAraucaria, pehuén, piñonero, pino piñonero, pino chileno, pino araucaria, pewen, guiliuAraucaria araucanaENAlerceFitzroya cupressoidesENTricahueCyanoliseus patagonusENSapo arrieroAlsodes nodosusNTLagarto nítidoLiolaemus nitidusNTHualoNothofagus glaucaNTIguanaCallopistes maculatusNTSapito de cuatro ojosPleurodema thaulNTPerca truchaPercichthys truchaNTPalito negro, doradillaAdiantum chilenseNT

CR critically endangered · EN endangered · VU vulnerable · NT near threatened (Species Classification Regulation / IUCN). ★ endemic to Chile. Extracted from SEIA studies by kingdom; presence reflects what baselines characterized, not a census.

26 Wetlands · 2 urban · 1.460 haSource: National Wetlands Inventory · SIMBIO (MMA)

CodeWetlandHectares
HUR-13-01Sist. Rios Maipo- Mapocho, esteros Colina- Angostura- Puangue y Trib.urban1.426 /18.814
HRU-13-38Buin 113
H-13-48Tranque Las Delicias3
HRU-13-28Buin 12
H-13-30Tranque El Recurso2
HRU-13-33Buin 62
HRU-13-29Buin 22
HRU-13-42Buin 132
HRU-13-35Buin 82
HRU-13-46Buin 171
HRU-13-37Buin 101
HRU-13-51Buin 211

+ 14 more wetlands

Area = hectares of wetland within the comuna boundary (apportioned using the DPA table of each record). For wetlands shared between comunas, "portion / total" is shown. "Urban" = urban wetland (HUR code). Official source migrated to the SBAP (Law 21,600).

Large projects approved by SEIASource: SEIA · approved projects

Projects with an environmental permit (RCA) approved by SEIA and declared investment above US$ 10 million, located in the comuna according to the case file and grouped by sector. Every sector with at least one project is listed: this is not a ranking or a selection. 51 projects totaling US$ 1.226 million, approved between 1997 and 2026. When a project spans several comunas, its investment is split among them.

Real estate16 projects · US$ 543 M · 2010–2026
Ninhue Desarrollo Inmobiliario SpAAmpliación Proyecto Inmobiliario Los Almendros de Buin · Conjunto Habitacional Viñedos de Alto Jahuel.
Energy20 projects · US$ 528 M · 1997–2026
Gasoducto del Pacífico S.A.Gasoducto Trasandino y Distribución de Gas Natural en Chile · Sistema de Almacenamiento de Energía y Línea de Transmisión Eléctrica BESS Metropolitana
Agriculture and livestock1 project · US$ 80 M · 2022
Puerto Viluco S.A.Centro Logístico Puerto Viluco
Miscellaneous industrial facilities2 projects · US$ 43 M · 2003–2007
Envases Impresos SpAAmpliación Planta Buin de Envases Impresos (e-seia) · Proyecto Planta Buin 2 Envases Impresos S.A. (e-seia)
Transport Infrastructure1 project · US$ 23 M · 2013
Empresa de los Ferrocarriles del EstadoMEJORAMIENTO INTEGRAL DE LA INFRAESTRUCTURA FERROVIARIA TRAMO: SANTIAGO - RANCAGUA .
Others11 projects · US$ 9 M · 1998–2020
Enaex Servicios S.A.Ampliación de la Actividad de Transporte de Sustancias Peligrosas de ENAEX Servicios S.A. · Transporte de Ácido Sulfúrico Excedente de la Fundición Caletones - Fase II

Approved is not the same as built or operating: the RCA authorises the project, but some were never carried out and others have since closed.

Source: projects with an RCA approved by SEIA (investment declared by the developer, split among the comunas the project spans). Under each sector are its two largest projects by investment. It is the best public proxy for large industrial sites; SERNAGEOMIN’s registry of active mining operations (by mineral and type of operation) is a layer not yet incorporated.

Basic utilitiesSource: SISS · CNE · MINEDUC

Distribuidora eléctrica
CGE
Empresa sanitaria (agua y alcantarillado)
Aguas Andinas · also Aguas San Pedro
Higher education
1 campus in the comuna

Almost no comuna has its own utility: it is served by a major regional concession holder. Water = urban operational territory (SISS; rural goes via APR); electric = concession distributor per the tariff decree (CNE); higher education = university, IP and CFT campuses (MINEDUC/SIES), with the nearest comuna when there are none.

Environmental conflictsSource: SNIFA · SMA + Environmental Search · Environmental Courts

Final SMA sanctions

Final sanctions
4
Sanctioned entities
4
companies, individuals and institutions
Total fines
296 UTA
2 with fines
Sanctioned entityAuditable unitCategoryFine (UTA)
Aconcagua Foods S.A.ACONCAGUA FOODS-BUINAgroindustry190
Valbifrut S.A.VALBI LTDA. (PLANTA PROCESADORA DE NUECES) - BUINAgroindustry106
Marcela Andrea Raggi MoralesGIMNASIO MARCELA RAGGIAmenities
Jane Ramirez ArayaLEÑERÍA BALMACEDA 965 BUINAmenities

Environmental sanctions final from the SMA (no pending appeals) whose auditable unit sits in the comuna: companies, individuals and institutions (including the municipality). Fine in UTA (Annual Tax Unit). Source: Public Sanctions Registry, SNIFA.

Appeals before the Environmental Courts

Appeals
2
on projects in the comuna
Upheld
1
the court sided with the claimant
Case no.Parties / projectSubjectDecision
23085-2018
2TA
Farías Piña, Belisario Antonio en contra de la Directora Regional del Servicio de Evaluación Ambiental (Res. Ex. N° 584/2016).
Centro Logístico Puerto Viluco
Administrative invalidationRejects
28207-2018
2TA
Carrera Aranguiz Dandy Arturo y Otros / Servicio de Evaluación Ambiental (Res. Ex. N° 1386/2016 de 29 de noviembre de 2016).
Centro Logístico Puerto Viluco
Environmental assessment - Citizen participationPartially upheld

Appeals resolved by the Environmental Courts (Law 20.600) on the comuna's projects or facilities, geolocated by the associated project (SEIA) or sanctioned facility (SMA). Partial coverage: Supreme Court appeals and cases without a locatable act are excluded. Source: 1st Environmental Court's Environmental Search.

Green areasSource: SINIM · SUBDERE (2025)

Green space per capita
4 m²
40% of the CNDU standard
standard 10 m²

Municipally maintained green area per inhabitant (SINIM). The National Urban Development Council recommends a minimum of 10 m²/inhab (WHO, ~9). Self-reported by municipalities, with quality varying across comunas.

National heritageSource: National Monuments Council (Feb 2026)

National monuments
4
Historic monuments
4

Monuments declared by decree (official CMN roster). Excludes archaeological and public monuments. Declaration entails legal protection and intervention restrictions.

Territorial burdensSource: SUBDERE (waste, Jun 2023) · Gendarmería (Jun 2025) · SISS (WWTP)

Infrastructure this comuna carries — often serving others.

FacilityTypeDetail
PTAS - BUIN - MAIPOPTAS · sbrAGUAS ANDINAS S.A. · discharges into río maipo
PTAS - ESTACIÓN BUINPTAS · lodos activadosAGUAS SAN PEDRO S.A. · discharges into canal paine
PTAS-VALDIVIA DE PAINEPTAS · primario + desinfecciónAGUAS ANDINAS S.A. · discharges into río angostura
Where this comuna's waste goes
Relleno Sanitario Santa Marta (Talagante) · 50.381 t/year

Official registries: they exclude illegal dumps and rural WWTPs (no consolidated public registry).

Forest firesSource: CONAF · Occurrence and damage statistics (2023-2024)

Wildfires · 2023-2024
20
Area affected
120 ha
mostly grassland
Cumulative last 5 seasons
155 ha
includes the 2022-2023 mega-season

Occurrence and area affected by wildfires (CONAF). The 5-season cumulative gives a fairer picture than a single year: fire is episodic and big catastrophes concentrate in few seasons. The area is comuna-wide, not just urban.

Winter riskSource: SENAPRED · winter critical points 2026 (via FAU U. de Chile)

Critical points registered
89
At high or very high risk
87
62 very high
Main threat
Inundación por desborde de c…
Inundación por desborde de cauce

Points in the comuna where SENAPRED identifies winter-rain risk (channel overflows, flooding, collector collapse, landslides, mudflows, snow), with risk level and the agency responsible for the fix.

Water scarcitySource: DGA · MOP (scarcity-zone decrees)

No scarcity decree in force today.
Years under decree since 2008
4
latest: 2022 · drought chronicity

DGA water-scarcity zone decrees (by comuna, province or region; basin decrees are not counted here, so chronicity is a floor). The decree enables extraordinary water redistribution measures. At the megadrought's peak (2021) 286 comunas were under decree; today 26.

Climate and climate changeSource: ARClim · MMA + CR2/UC (CMIP6 modeling)

Mean annual temperature
15,19°C
2035-2065 projection: +1,31°C
Annual precipitation
488 mm
projection: -4%
Hot days>30°C
67
projection: +33 days
Frost days
11

Modeled climatology (CMIP6 downscaling ~5 km): present ≈ 1980-2010, projection ≈ 2035-2065 middle scenario. Not recent weather observation.

SafetyCrime, road crashes and municipal security infrastructure

Crimes (police cases)Source: CEAD · Ministry of Public Security

Police cases · 2025
5.813
all crimes
Rate per 100,000 inhab.
4.927
Police cases · trend
6.288
5.813
20102025
By crime type · 2025
CrimeCasesRate/100k
Threats975826
Property damage777659
Domestic violence680576
Larceny436370
Burglary of an inhabited place363308
Minor injuries343291
Theft of items from vehicles301255
Robbery with violence or intimidation279237
Burglary of an uninhabited place265225
Alcohol and drug use in public spaces212180
Motor vehicle theft158134
Weapons-related crimes153130

Showing the 12 crimes with most cases of 29.

Police cases (reports + arrests) recorded by Carabineros and PDI. Not victimization (ENUSC measures the real figure, higher due to underreporting). The rate uses INE 2024 population. Source: CEAD, Ministry of Public Security.

What the municipality does

Municipal security infrastructure and staff declared to SINIM (since 2016). Excludes Carabineros and PDI, which are national.

Surveillance cameras
56
Guards and inspectors
68
1 per 1.735 hab
Patrol fleet
18
cars, pickups, motorcycles, bikes
Security booths
4
Patrol fleet by type
Cars: 5Pickups: 3Motorcycles: 10Drones: 1
Surveillance cameras · trend
53
56
20202025

Road crashesSource: CONASET · Data Observatory (2024)

Crashes · 2024
612
Deaths
4
3,4 per 100,000 inhab.
Injured
348
44 serious
Pedestrian collisions
45

Crashes georeferenced by CONASET (urban + highway) during 2024. The only per-comuna source; covers ~70% of the country's deaths (non-geolocatable ones are excluded), so it slightly underestimates the total. Pedestrian collision is the leading cause of pedestrian death.