Reviewed and updated October 9, 2026 by the SearchSystems.net editorial team. The arrest and crime counts are the ones each agency reported to the FBI, as the FBI held them on October 8, 2026. Every office link was opened and checked against the office's own site between September 23, 2026 and September 25, 2026.
Brentwood, California, in Contra Costa County, has about 66,000 residents (2024 Census Bureau estimate). A police report belongs to the agency whose officer wrote it, so which office holds a report from Brentwood depends on where the incident happened. This guide names each agency, where its records page is and what the California Public Records Act requires of it.
This guide covers which agency, the city's records page, the sheriff's reports, what the law requires and common questions.
Related guides: Brentwood public records, Contra Costa County police reports, Brentwood arrest records, Brentwood warrants, Brentwood inmate search, Brentwood criminal records, California arrest records and California inmate search.
Which Agency Holds a Report from Brentwood
A crime, incident or collision report belongs to the agency whose officer wrote it, and that agency releases it, not the court, the jail or the prosecutor.
Inside Brentwood that is the agency that reports to the FBI for the city (filed by the FBI as Brentwood Police Department); outside it, the Contra Costa County Sheriff's Office.
The FBI's list also places the Highway Patrol's Contra Costa Area Office in Contra Costa County; a report taken on a state highway by it comes from that agency's own records office.
The FBI's list also carries San Francisco Bay Area Rapid Transit in Contra Costa County and Union Pacific Railroad in Contra Costa County (other agency) and Contra Costa Community College (campus police), each with a records office of its own.
Reports from the Brentwood Police
For Brentwood, SearchSystems opened and checked the Brentwood police records page at brentwoodca.gov/government/police/file-obtain-reports-online (page title: File/Obtain Reports Online | Brentwood, CA), phone (925) 634-6911, which answered when SearchSystems opened it on September 25, 2026.
The agency that reports for Brentwood had 135 violent and 1,047 property crimes reported for 2025 and reported 1,098 arrests for 2025.
Reports from the Contra Costa County Sheriff's Office
The Contra Costa County Sheriff's Office is the county agency; it had 428 violent and 1,579 property crimes reported for 2025 and reported 1,973 arrests for 2025.
Its reports come from its records unit. The office's page SearchSystems verified is its custody page, at cocosheriff.org/how-do-i/inmate-information (page title: Inmate Information | Contra Costa Sheriff, CA), which answered when SearchSystems opened it on September 23, 2026.
What the California Public Records Act Requires
The California Public Records Act sets the rules: an answer within 10 days, with up to 14 more days in unusual circumstances, at a charge of the direct cost of copying only, not staff time, from the agency that holds the report.
Any other county record goes through the county records request page SearchSystems verified, at contracosta.ca.gov/8129/Public-Records-Requests (page title: Public Records Requests | Contra Costa County, CA Official Website).
A defendant who has been charged gets the report through the case: the District Attorney, (925) 957-8602, handles discovery for pending cases.
Frequently Asked Questions
How do I get a police report in Brentwood?
From the agency that took it. The Brentwood police records page is at brentwoodca.gov, phone (925) 634-6911; the sheriff's reports come from the Contra Costa County Sheriff's Office.
How long does an agency in Brentwood have to answer?
Under the California Public Records Act, within 10 days, with up to 14 more days in unusual circumstances. It may charge the direct cost of copying only, not staff time.
Who has a crash report from a state highway in Brentwood?
The state agency whose officer took it; the FBI lists the Highway Patrol's Contra Costa Area Office in Contra Costa County.
How do I get a report from the Contra Costa County Sheriff's Office?
From its records unit. Under the California Public Records Act the answer is due within 10 days, with up to 14 more days in unusual circumstances.
Is this the official Brentwood website?
No. SearchSystems.net is an independent public records guide, online since 1997. It links to the official city, county, court and state offices described above and does not hold records, charge for them or take requests.