City
Brentwood
Brentwood is a city record. City or town offices may handle local rules inside their limits, while county offices still handle records, taxes, courts, and many services.
Starting point
Confirm the address is inside local limits first.
If the address is inside Brentwood, city or town offices may handle local permits, code, and services. If it is outside limits, county routing may be the better first stop.
A mailing city is not always the same as city government jurisdiction.
2025 population
66,607
Land area
14.865 sq mi
Water area
0 sq mi
Directory notes
Local layers to keep on the same page.
Confirm city or town limits.
A mailing address can use a nearby place name. If the address is outside limits, county offices may handle permits, code, and land-use routes.
County still matters.
Contra Costa County can still matter for assessor, tax collector, recorder, court, public health, social service, and election records.
Some layers are separate.
Water, sewer, fire, school, utilities, coast, earthquake maps, wildfire zones, parks, and trails may point outside city hall.
County layer
County shown for Brentwood
Practical notes
Office, map, permit, and paperwork notes for Brentwood
Place note · Rules and licenses · Reviewed July 5, 2026
Brentwood businesses start with the tax certificate and the address
Brentwood uses a Business Tax Certificate for businesses operating in the city, while building work and inspections stay with the Building Inspection Division.
Place note · Home and property · Reviewed July 5, 2026
Brentwood utility billing keeps water, sewer, and garbage together
Brentwood Utility Billing is the place to start or stop water, sewer, and garbage service and to manage the monthly city utility bill.
Place note · Home and property · Reviewed July 4, 2026
Brentwood Connect 24/7 is the Public Works request door
Brentwood Connect 24/7 links residents to Public Works service requests for streets, sewer, water, garbage, sweeping, streetlights, signs, and other local issues.
County layer · Cars and driving · Reviewed July 6, 2026
Antioch BART is the end of the Yellow Line
Antioch Station is a Yellow Line terminal with parking, Tri Delta Transit connections, bike lockers, restrooms, and a train transfer pattern riders should know.
County layer · Outdoors · Reviewed July 6, 2026
Concord picnic sites need the right reservation
Concord park picnics can be casual or reserved, but group sites, alcohol permits, inflatables, deposits, and special-event needs change the plan.
County layer · Cars and driving · Reviewed July 6, 2026
Richmond's BART and Amtrak stop works like a small transit hub
Richmond's Amtrak station sits beside BART and connects with bus and park-and-ride options, but parking rules differ by lot and trip type.
Almanac notes
Stories and local context near Brentwood
Place note · History and culture
Brentwood's local history museum keeps East County farm memory close
East Contra Costa Historical Museum in Brentwood gives the growing city a place for farm, school, family, and small-town history from the wider East County area.
Place note · Outdoors
Marsh Creek Trail links Brentwood toward the Delta
Brentwood's local trail network connects with Marsh Creek Regional Trail, a paved route that points west toward Big Break and the Delta edge.
County layer · History and culture
El Campanil Theatre keeps Antioch's Rivertown stage alive
El Campanil Theatre opened in downtown Antioch in 1928 and now works as a restored cultural venue in the Rivertown district.
County layer · History and culture
Richmond's old Carnegie library now holds city history
The Richmond Museum of History and Culture sits in the old Carnegie Library and connects Ohlone history, early city growth, and the WWII Homefront.
County layer · History and culture
Forest Home Farms keeps San Ramon's farm past in town
Forest Home Farms gives San Ramon a 16-acre historic farm, with Boone family buildings, old outbuildings, a walnut-processing past, and valley agriculture still visible.
County layer · History and culture
Pittsburg's name changed with the work on the waterfront
Pittsburg's history includes Rancho Los Medanos, fishing and canning, Black Diamond coal, waterfront shipping, industry, and Camp Stoneman.
County layer · History and culture
Antioch began as a river landing before it grew south
Antioch's early story starts near the San Joaquin River, where settlers chose the name in 1851 and river travel shaped the town before roads took over.
County layer · History and culture
Clayton's town story starts with Joel Clayton in Diablo Valley
Clayton was laid out in 1857 by Joel Clayton as a small Diablo Valley center for nearby mining, ranching, farming, and local trade.