Lost something in Tamalpais-Homestead Valley? Here is who holds found property.
One report connects your lost item to the Mill Valley Police Department, the Tamalpais Community Services District, local pet services, and active Marin County social channels. Your report keeps searching for a match.
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 report the loss
Describe your lost item (wallet, ring, phone, bracelet, pet) with as much detail as you can, plus when and where you lost it. We ask the right questions upfront so you don't have to track down what information each office needs.
We route it to the right places
Your report goes directly to the Mill Valley Police Department, Tamalpais Community Services District, Marin Humane (if it's a pet), and the local Facebook groups and Nextdoor where neighbors post found items. No runaround, no wondering who to call first.
Your report stays active and searching
For your entire search period (12 months), your report keeps matching against new found posts, local marketplace listings, and shelter updates. You don't have to refresh websites every day. We alert you the moment a credible match appears.
Where to report a lost item in Tamalpais-Homestead Valley
Here's what each channel does and how ReportLost connects you to all of them at once.
Mill Valley Police Department Lost and Found
If you've lost an item in Tamalpais-Homestead Valley or nearby areas, the Mill Valley Police Department holds found property. They accept reports Monday through Thursday, 8 am to 5 pm (closed 12 pm to 1 pm). We file your report directly and let you know which precinct covers your location and what to include when you follow up.
Call 415-389-4100 (non-emergency)|Visit Mill Valley PD Lost and Found
Tamalpais Community Services District
The local government office for Tamalpais-Homestead Valley can help direct you to the right services or accept reports for lost items found on community property. They're open Monday through Friday, 8 am to 4:30 pm. We prepare the details you need to provide so the conversation is faster.
Call 415-388-6393|Visit Tamalpais Community Services District
Lost pet? File a priority report
If your dog, cat, or other pet is missing, Marin Humane is the primary resource for the area. They maintain a searchable lost and found pet database and help reunite animals with their families. You can search their current animals and file a lost pet report. ReportLost also connects your pet to local Marin and North Bay lost pet Facebook groups for extra visibility. file a priority lost pet report
Community social channels
Neighbors often spot lost items and post about them in local Facebook groups like the Lost and Found Pets of Marin/Sonoma County/North Bay/Bay Area group and on Nextdoor. We post your report to these active channels automatically so locals can help. Many items are recovered through community tips within hours.
⚠️ Spotted incorrect or outdated information? Let us know so we can review it.
Report your loss now—early action improves your chances
The sooner your report is live across all channels, the sooner the community and official services can help you find what you've lost. Once you submit, you can relax knowing the search continues automatically on your behalf.
Report my lost item →Losing a wallet, purse, ring, phone, or beloved pet in Tamalpais-Homestead Valley means checking multiple places: the Mill Valley Police Department, Marin Humane for animals, social media groups, neighborhood Nextdoor posts, and more. Each office has different hours, different processes, and no connection between them. By the time you've called everyone, crucial hours have passed, and you're still missing information on whether your item has been found.
ReportLost simplifies this entirely. One form, one submission, and we handle routing your report to every relevant local channel, from law enforcement to community networks to pet services. Better yet, your report doesn't just sit there after the initial filing. It stays active for months, continuously matching against newly posted found items and alerts so you can breathe easy while the search continues.
Common places where items go missing in Tamalpais-Homestead Valley
Knowing where you lost something helps us point you to the right local office.
Downtown Mill Valley (Corte Madera Avenue corridor)
Shopping, dining, and community spaces along the main commercial strip. Items lost here are often turned in to nearby shops or the Mill Valley Police Department.
Mount Tamalpais foothills and hiking trails
Popular outdoor areas where wallets, keys, phones, and personal items are left behind on trails. Park rangers and hikers often report finds to local police.
Residential neighborhoods and parks
Pets and items lost in yards, along neighborhood walks, or in local parks are frequently spotted by neighbors who share posts in community Facebook groups.
Bell Lane area (near Tamalpais Community Services District)
Civic and administrative hub where items may be lost in or near government buildings and passed along to services.
Where locals post found items
Beyond the police department and city offices, these communities are where neighbors share lost and found reports.
Active Facebook group for lost and found pets across the North Bay region
Neighborhood app where locals post found items and help neighbors recover them
Mill Valley and Marin County local groups where residents share found items and pet alerts
Questions about lost items in Tamalpais-Homestead Valley
How long does the Mill Valley Police Department hold found items?
The Mill Valley Police Department retains found property for a set retention period. Call 415-389-4100 during business hours (Monday–Thursday, 8 am to 5 pm, closed 12 pm to 1 pm) to ask about your specific item and how long they keep it before it's disposed of or donated.
My pet is missing. Where should I search first?
Start by contacting Marin Humane to search their lost pet database and file a report. Check their website daily for newly arrived animals, and post in the Lost and Found Pets of Marin/Sonoma County/North Bay/Bay Area Facebook group for immediate community visibility. ReportLost can connect you to all of these channels at once.
I lost something on a hiking trail. Who should I contact?
File a report with the Mill Valley Police Department (415-389-4100) and check back with the Tamalpais Community Services District (415-388-6393) in case it was turned in. Also post in local Facebook groups, as fellow hikers often find and report items left on Mount Tamalpais trails.
What if I lost my item in Mill Valley proper instead of Tamalpais-Homestead Valley?
Mill Valley has its own police lost and found (same department, 415-389-4100). However, both areas share many community resources and social channels, so your report through ReportLost will reach the relevant offices and neighborhood groups either way.
How long will my report stay active if I use ReportLost?
Your report can stay active for either 12 months depending on your choice at signup. During the entire period, your report continues matching against new found posts, local marketplace updates, and community alerts so you don't have to check every day yourself.
Is ReportLost.org official, or does it replace calling the police?
ReportLost is an independent service, not part of the Mill Valley Police Department or Tamalpais Community Services District. We don't replace filing an official report; instead, we make sure your report gets to the right offices and stays visible to the community for months. If your item involves a crime (theft or foul play), you should also file a police report directly by calling 415-389-4100 or 911 for emergencies.
Lost & found in nearby cities
Ready to find your lost item?
The sooner you report, the sooner the search begins. Whether your loss involves the Mill Valley Police, the Tamalpais Community Services District, local pet services, or your neighbors on Nextdoor, ReportLost connects you to all of them and keeps your report active for months.
Start my report →ReportLost.org is an independent service and is not affiliated with the Mill Valley Police Department, Tamalpais Community Services District, Marin Humane, or any local government agency. We help you report your loss to the appropriate channels and maintain an active search across community networks. Always file an official report with local police if your loss involves a crime.