November 14, 2025
How much should you put down as earnest money when you buy a home in San Mateo? It is a common question, and a smart one. Your deposit signals commitment, affects how competitive your offer looks, and needs careful handling to keep it safe.
In this guide, you will learn what earnest money is, how it works under California contracts and escrow, typical deposit amounts in San Mateo, when it is due, how to protect it from wire fraud, and when you can get it back. You will also get a simple checklist you can follow from offer to closing. Let’s dive in.
Earnest money is a good‑faith deposit you make when your offer is accepted. It shows the seller you are serious about purchasing the property. The deposit is typically held by the escrow company and is credited to you at closing.
Think of it as an early part of your funds. It is not your entire down payment. At closing, your deposit is applied toward the purchase price and closing costs, and you bring in the remainder needed to close.
In competitive markets, a strong deposit can help your offer stand out. It can also give the seller some protection if a buyer defaults without a valid reason under the contract.
In California, your purchase contract controls how your earnest money is handled. Most buyers and sellers use the California Association of Realtors Residential Purchase Agreement, along with addenda that may address details like contingencies and liquidated damages.
Your deposit is placed with a neutral escrow holder in a trust or escrow account. Escrow companies are licensed and regulated by the state. The escrow holder follows the written instructions from the parties, which usually means the signed purchase agreement and any later amendments.
Escrow does not decide who is right in a dispute. Funds are released only when both buyer and seller provide written instructions, or when there is a court order or arbitration award. If a buyer breaches the contract, the seller’s remedies depend on the contract language and which contingencies were removed. In some cases, a seller may keep the deposit as liquidated damages, pursue specific performance, or seek other damages as allowed by the agreement.
San Mateo is part of a high‑value Bay Area market. Local practice often falls within a few common ranges:
Here are simple illustrations:
What should you choose? It depends on price point, the number of competing offers, whether the contract includes a liquidated damages clause, and your financing and contingency plan. All‑cash buyers sometimes use a larger deposit to strengthen their position, while financed buyers may balance deposit size with contingency timelines.
Your contract sets the deadline for the earnest money. In many cases, the deposit is due within 1 to 3 business days after offer acceptance. Read your agreement closely and mark the exact due date.
You can usually deliver the deposit by wire transfer, personal or cashier’s check payable to the escrow holder, or by an electronic transfer if the escrow company supports it. Larger deposits are commonly wired.
If you are using a mortgage, your lender will ask for documentation of the source of your deposit funds. Expect to provide recent bank statements and, if applicable, gift letters. Keep all receipts and confirmations from escrow.
Real estate wire fraud is a real risk. Criminals sometimes send fake wiring instructions that look legitimate. Protect yourself with a few simple steps:
Whether you receive your deposit back depends on your contingencies and timing. Contingencies protect you only while they are active and within the agreed periods. Common buyer protections include:
Here are common scenarios:
The key is to track deadlines and follow the written procedures in your contract. Missing a notice deadline can put your deposit at risk.
Escrow’s role is neutral. If the buyer and seller disagree about who should receive the deposit, escrow will hold the funds until both sides sign a written release or a court or arbitration order directs disbursement.
Your options include negotiating a mutual release, using mediation or arbitration if your contract calls for it, or filing a legal claim. Because litigation is slow and expensive, many parties try to reach a negotiated resolution quickly.
Use this timeline to keep your deposit safe and your purchase on track.
Before you submit an offer:
After acceptance:
Managing contingencies:
If issues arise:
At closing:
The right guidance can help you set the right deposit, protect it, and move confidently from acceptance to closing. If you are weighing how much earnest money to offer, or you need a plan that balances competitiveness with protection, let’s talk about your goals and the current San Mateo market.
Ready to take the next step on the Coastside or Peninsula? Get a free Coastside home valuation or schedule a consultation with Unknown Company.
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