County and municipal agencies in Alameda County, California sell surplus through online auction sites like GovDeals and Public Surplus. BidProwl tracks all of them in one place: 232 live lots right now. Register on the platform hosting the lot you want; most items are local pickup only.
The usual mix is retired fleet vehicles and police cruisers, public works equipment, school district electronics and furniture, and unclaimed or seized property. Inventory refreshes daily as agencies list new surplus.
156 live auctions across Alameda County right now.

Oakland, CA · Hubzu
Listed until sold · 20 bids
$366,000

Coast Guard Isla, CA · GovDeals
2d 19h left · 15 bids
$510

Oakland, CA · GovDeals
3d 3h left · 14 bids
$112