Lost something in Brentwood? Here is who holds found property.
File one report and we notify the Brentwood Police Department, search local lost and found offices, and monitor the web continuously for matches across social channels and marketplaces so you don't have to check every day.
What did you lose?
If there isn’t an adequate suggestion, select “Other – My item isn’t listed” and enter the item’s category. You can provide details later.
Publishing your report is free and your details stay private. The assisted search is a separate paid service, described in the Terms.
Recent activity
California : found property must be held by law enforcement for at least 90 days before it can pass to the finder, be auctioned or disposed of. (California Civil Code §2080.2)
Across the United States
- Wrislet clutch gray/silver bag with documents · Chicago, IL, October 8
- Ring TM on top · Greensboro, NC, October 8
- Keys · Sarasota, FL, October 8
- Keys · Brookline, MA, October 7
- Camera · Monterey, CA, October 7
Local contact details reviewed on October 7, 2026.
How ReportLost Works
You describe your loss
Tell us what you lost, where, and when. We generate a complete report with all the details needed for local authorities and recovery services.
We route it to the right places
Your report goes to the Brentwood Police Department, local transit authorities if applicable, and relevant lost and found offices. You get confirmation of every submission.
Automated web monitoring finds matches
Our system scans Facebook groups, Nextdoor, Craigslist, marketplace sites, and local community channels continuously for 12 months. You receive alerts as soon as a credible match appears, so you can report your loss without lifting a finger.
Where to Report a Lost Item in Brentwood
Or let us handle it for you
Brentwood Police Department
The non-emergency dispatch line connects you to the right desk for reporting a lost item. We identify which station covers your loss location and provide the exact details to include in your report.
Brentwood City Hall
The city's main administrative office can direct you to specific city-run lost and found services or help you file a formal report. We generate the information you need before you call.
Tri Delta Transit Lost and Found
If you lost something on a bus, Tri Delta Transit keeps recovered items for a limited time. We alert you to call their office and we confirm your item is in their system.
Lost Pet
If your pet is missing, time matters. Contra Costa Animal Services holds animals for a minimum of 3 business days. Contact the shelter immediately, and file a priority lost pet report with us for rapid social media and community alerts.
⚠️ Spotted incorrect or outdated information? Let us know so we can review it.
Start your report today
The sooner you file, the sooner we begin monitoring. Once your report is live, you can rest easy knowing the system is working for you.
Report my lost item →Brentwood is a growing community with parks, trails, and busy shopping areas, which means lost items turn up everywhere—from transit buses to retail stores to parking lots. The challenge: each location has its own lost and found, each with different hours and procedures. You'd need to call the police non-emergency line, check transit websites, and scan social media groups yourself for weeks. That's exhausting.
ReportLost simplifies the entire process. One report reaches all the right services—police, public transit, and local community channels—automatically. Then we take over the legwork. Our monitoring system searches the web around the clock for posts matching your item, so you can stop refreshing pages and trust that an alert will reach you the moment someone finds what you've lost.
Common Places Brentwood Residents Lose Items
We monitor all of them
Downtown Brentwood & Main Street
Shopping centers, retail stores, and sidewalk areas where items slip away in the hustle of errands.
Parks & Trails
Brentwood's 19.2 miles of walking and biking trails are beautiful, but wallets, phones, and keys get left behind frequently.
Transit Hubs
Bus stops and Tri Delta Transit stations where items are forgotten during commutes.
Parking Lots & Gas Stations
Items left in vehicles or accidentally dropped during quick stops around town.
Community Channels
Where Brentwood residents post found items
Facebook group for lost and found pet sightings in the region
Local neighborhood and community pages where found items are often shared
Hyperlocal app used by Brentwood residents to report lost and found items
Reddit communities where residents post about lost items and help each other
Frequently Asked Questions
How long do police hold found items in Brentwood?
Policies vary, but items held by police are typically kept for 30 to 90 days. We recommend calling the Brentwood Police Department non-emergency line at (925) 809-7911 to check on your specific item.
What's the best way to file a report with Brentwood Police?
You can call non-emergency dispatch at (925) 809-7911 or visit the department at 9100 Brentwood Blvd. We prepare your report details so you're ready when you call.
How long will Tri Delta Transit hold my lost bus item?
Tri Delta Transit typically holds recovered items for a reasonable period before disposal. Call their Lost and Found line at (925) 754-6622 (Monday-Friday, 8:00 am-5:00 pm) to check status immediately.
Do I need to visit in person to report a loss or claim an item?
Many offices accept phone reports, but some items require in-person pickup with proof of ownership. We'll tell you what's required and help you prepare before you make the call.
How long does ReportLost monitor for my item?
We scan the web continuously for 12 months after your report, checking social media, community groups, marketplaces, and local channels. You'll get an alert the moment we detect a credible match.
Is ReportLost.org official, or does it replace contacting the police?
ReportLost is an independent service that works alongside official channels. We file reports with the police and other local services on your behalf, then add automated web monitoring that police and individual lost and found offices cannot provide. You benefit from both.
Lost & found in nearby cities
Don't search alone
Your lost item is out there. Let us report it properly and monitor every corner of the web until it's found.
Start my report →ReportLost.org is an independent service and is not affiliated with the Brentwood Police Department, City of Brentwood, Tri Delta Transit, Contra Costa Animal Services, or any other government or transit agency. We help you file reports with these services and monitor public channels for matches, but all official lost and found policies and procedures remain the responsibility of each respective organization. See our full legal disclosures at reportlost.org/legal.