Lost something in San Lorenzo? Here is where to report it.
One report reaches the Alameda County Sheriff's Office, local transit services, nearby shelters, and active community channels. Your report keeps searching for a match across the region.
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 It Works
You describe what was lost
Tell us what you lost, where, and when. We gather the details that matter most to searchers and the right agencies.
We route it to the right places
Your report goes directly to the Alameda County Sheriff's Office, AC Transit if applicable, animal services if needed, and the community groups where locals post finds.
Your report stays active and searching
For 12 months, your report automatically matches against new found posts, shelter intake records, and marketplace listings. You get alerts when a credible match appears, so you don't have to check every group and site yourself each day.
Where to Report in San Lorenzo
These are the official channels we contact on your behalf. You can also reach out directly if you prefer.
Alameda County Sheriff's Office
The Sheriff's Office handles lost and found reports across unincorporated San Lorenzo and surrounding areas. You can file online or in person. ReportLost generates the exact details to include and tells you which precinct or division covers your loss location.
AC Transit Lost and Found
If your item was lost on an AC Transit bus or at a local stop, the system typically logs items within 2–3 business days. Search their inventory online or call to check. We notify AC Transit of your report so staff are aware of what you're looking for.
Lost Pets
If you've lost a pet in San Lorenzo or the surrounding East Bay, the East Bay SPCA shelter at 1590 Fortman Way and local animal control are your first stops. Many pets are reunited through shelter intake records and community alert networks. File a priority lost pet report to activate our pet-specific search channels.
City and Community Channels
San Lorenzo is unincorporated, so local issues route through Alameda County services and the broader East Bay community. ReportLost connects you to active neighborhood groups on Facebook and Nextdoor where residents post found items daily.
⚠️ Spotted incorrect or outdated information? Let us know so we can review it.
Found something? Let's get it back to you.
The sooner you report, the sooner our search can begin. Once your report is in the system, the Alameda County Sheriff's Office, transit services, shelters, and community volunteers are all alerted. You can take a breath and let the process work.
Report my lost item →San Lorenzo sits in the heart of the East Bay, where items slip away on public transit, in busy shopping areas, at neighborhood spots, and across the county line into neighboring cities. When that happens, you're left calling multiple agencies, posting in separate Facebook groups, and checking shelters yourself, day after day.
ReportLost simplifies that. One report reaches law enforcement, transit services, animal shelters, and the community channels where locals report finds, all at once. Then your report stays active for months, automatically searching for matches so you can focus on moving forward. It's the fastest way to cover all the ground that matters.
Common Places Losses Happen in San Lorenzo
Items are often turned in near where they're lost. We search all of these zones and beyond.
Paseo Grande & Shopping Districts
The busiest commercial areas where wallets, keys, and bags go missing in retail spaces and parking lots.
AC Transit Bus Routes & Stops
Keys, phones, and personal items frequently left on buses or forgotten at transit shelters throughout San Lorenzo.
Neighborhood Parks & Recreation
Items lost at parks, playgrounds, and community gathering spots are often turned in to local volunteer groups.
Castro Valley & Hayward Adjacent Areas
Losses that straddle San Lorenzo's borders often surface in neighboring cities. Our search reaches across the East Bay.
Community Groups Where Finds Are Posted
Locals in these groups post found items daily. <strong>ReportLost automatically alerts these communities and matches new finds against your report.</strong>
Active Facebook group for neighborhood pet and item posts
Broader East Bay networks where cross-city finds are shared
Neighborhood app where residents report found items in real time
Where found items are sometimes listed; we monitor for matches
Questions About Losing and Finding in San Lorenzo
How long does the Sheriff's Office keep lost and found items?
Unclaimed property held by the Alameda County Sheriff's Office is typically kept for a set period before disposal per county law. Check with the Sheriff's Office directly for specific timelines, as retention varies by item type. Acting quickly improves your chances of recovery.
How can I claim something I lost on AC Transit?
Call AC Transit's customer service or search their lost and found inventory online. Items are usually logged 2–3 business days after being turned in. Provide a description of your item and where you lost it.
Where should I look if I lost a pet in San Lorenzo?
Contact the East Bay SPCA shelter (510-337-8565) and check their online database. Post in the San Lorenzo Area Lost & Found Pets group on Facebook and local neighborhood alerts. ReportLost's lost pet service connects you to all these channels instantly.
What if my item was lost near the San Lorenzo / Castro Valley or Hayward border?
Losses at city boundaries often surface in neighboring jurisdictions. ReportLost's search extends across the East Bay and beyond, so your report reaches shelters, police departments, and community groups in adjacent areas.
How long does ReportLost keep searching for my item?
Your report stays active for 12 months (depending on your selection), automatically matching against new found posts, shelter records, marketplace listings, and community alerts. You receive notifications as soon as a credible match appears.
Is ReportLost.org official, or does it replace calling the police?
ReportLost is an independent service; we are not part of law enforcement or government. When you report through us, we file the information with the appropriate agencies (Alameda County Sheriff's Office, AC Transit, shelters, etc.) and activate community search channels. You can also report directly to these agencies yourself. Our service ensures nothing falls through the cracks and your report keeps working for you even after you've reported elsewhere.
Lost & found in nearby cities
Ready to report your loss?
The sooner you tell us what's missing and where, the sooner we route it to law enforcement, transit services, shelters, and the community. Your report then keeps searching automatically for months, matching new finds to your description so you don't have to.
Start my report →ReportLost is an independent service and is not affiliated with the Alameda County Sheriff's Office, AC Transit, the East Bay SPCA, or any government agency. We are a private company that helps you report losses and activates community search channels. All organizations and links mentioned are cited for reference only.