How to Bid on California Tax Sales with Bid4Assets

If you're planning to buy tax-defaulted property in California, you'll almost certainly do it on Bid4Assets. It's the online auction platform most California county tax collectors use to run their public sales. Once you understand how it works, the mechanics are straightforward — but the deadlines are strict, so it pays to know them in advance.

What Bid4Assets is

Bid4Assets is a third-party auction site that counties contract with to host their tax-defaulted (and sometimes sheriff/surplus) sales online. Each county runs its own sale as a separate event with its own listings, rules, deposit amount, and dates. Bid4Assets is just the venue — the terms come from the county.

Creating an account and getting approved

Register a free account well before the sale. Some sales require you to be pre-approved to bid, which can take a day or two, so don't leave it to the last minute. You'll provide basic identity and (for winning) vesting information — how you want your name to appear on the deed.

The deposit

To bid in a county's sale, you place a single refundable deposit for that sale — commonly around $1,000–$5,000 plus a non-refundable processing fee. Key points:

• The deposit qualifies you to bid on any parcel in that county's sale, not just one.
• Deposits are due days before the auction opens — miss the deadline and you're locked out.
• If you don't win, your deposit is returned (typically within about 10 business days).

How the auction runs

Sales run on a timer. Each parcel has a closing time, and Bid4Assets uses anti-sniping extensions — a last-second bid pushes the closing time out a few minutes so others can respond. You can place a maximum (proxy) bid, and the system bids on your behalf up to that amount. Decide your walk-away number before the clock gets tense — see how to research a property before you bid.

Winning and paying

If you win, you owe the balance (winning bid minus your deposit) plus documentary transfer tax and recording fees. This is usually due by wire transfer within a short window — often just a few business days, sometimes by a fixed date set by the county. Pay late and you can forfeit both the property and your deposit, and may be barred from future sales.

After the sale

The county records and mails your tax deed. Non-winning deposits are refunded. From there, the real work begins — see the real risks of buying tax-defaulted property and why most buyers plan for a quiet title action.

A few tips

• Read the county's specific terms on the sale page — deposit amounts, deadlines, and payment windows vary by county.
• Fund your account early. Wires take time; don't get caught by a bank cutoff.
• Have your research done before the deposit deadline, not after.

Where Trelys fits

Bid4Assets shows you an APN and a minimum bid — not what the parcel is worth. Trelys pairs each upcoming California auction with assessor and parcel data so you walk into the sale already knowing what you're bidding on. See which counties are live.

This article is educational, not legal or investment advice. Platform features and county terms change. Always confirm the current rules on the county's official sale page before depositing or bidding.