Selling a home in Contra Costa County involves agent commissions, escrow and title fees, the county documentary transfer tax ($1.10 per $1,000 of sale price), and prep costs. Most line items are negotiable between buyer and seller in the purchase contract, though the tax rate itself is set by law.
Selling a home in Contra Costa County typically involves five cost categories: agent commissions, escrow and title fees, the county documentary transfer tax, any applicable city transfer tax, and prep or discretionary costs such as repairs, staging, and buyer credits. The county transfer tax rate is fixed by law at $1.10 per $1,000 of sale price, but most other allocations, who pays escrow, who pays title insurance, who covers the transfer tax, are negotiable in the purchase contract. East County cities like Brentwood, Antioch, Oakley, Pittsburg, and Discovery Bay do not layer on a city transfer tax, which keeps the fixed-rate portion of seller costs simpler than in cities like Richmond or El Cerrito.
Key Takeaways
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Contra Costa County's documentary transfer tax is set by law at $0.55 per $500 ($1.10 per $1,000) of the taxable sale price, the rate is fixed, but who pays it is negotiable in the purchase contract.
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East County cities (Brentwood, Antioch, Oakley, Pittsburg, Discovery Bay) do not impose an additional city transfer tax, unlike Richmond and El Cerrito, which add their own tiered rates on top of the county rate.
Recent local market data shows East County median sale prices ranging from $510,750 in Bay Point to $1,100,000 in Clayton, the higher your sale price, the more each fixed-rate cost line (transfer tax, escrow, title) adds up in absolute dollars.
Escrow fees and the owner's title insurance policy are commonly seller-side costs by local custom, but both can be shifted to the buyer or split in contract negotiations.
Agent commissions are fully negotiable and not set by law, there is no standard or customary rate, and listing-side compensation and any buyer-agent compensation are separate, independently negotiated items.
What are the main seller cost categories in Contra Costa County?
Every seller's closing statement is different, but the same categories show up in virtually every transaction. Here's how I walk our clients through each one.
Agent commissions
Commissions are fully negotiable and not set by law, there is no standard, customary, or going rate. What you agree to pay your listing agent is spelled out in your listing agreement, and any compensation a seller chooses to offer a buyer's agent is an entirely separate, optional decision. Those are two distinct negotiations, not a single combined fee. Per the National Association of Realtors, compensation offers can no longer be communicated through the MLS, reinforcing that these are contract-level conversations between the parties involved.
That said, commission is typically the largest single line item a seller sees at closing. It's worth having a direct conversation about what you're getting for what you're paying, and making sure the agent you hire actually knows this market.
Escrow and title fees
In California, closings are handled by a closing agent, and the escrow fee is typically split between buyer and seller, often 50/50 by local custom, though the split is negotiable. According to LegacySFHomes' guide to California closing costs and Amerisave's 2026 California closing cost guide, escrow fees are calculated on a rate schedule tied to the sale price, set by the escrow company, and vary by provider.
Owner's title insurance, the policy that protects the buyer's ownership rights, is customarily a seller-side cost in many California counties, including Contra Costa. The lender's title policy (required by the buyer's lender) is typically the buyer's expense. As GuideRealEstateCA's Bay Area seller cost guide notes, either policy's payer can be shifted by contract negotiation.
Old Republic Title's Contra Costa Homeowners Manual lists the full slate of seller-side escrow items: escrow charges, title insurance, recording charges to clear the seller's liens, prorated property taxes and assessments, HOA transfer fees (where applicable), and the documentary transfer tax. Sellers pay their prorated share of property taxes and any HOA dues up to the closing date; the buyer takes over from there.
Documentary transfer tax
This is the one fixed-rate cost every Contra Costa seller faces. The county levies a documentary transfer tax (DTT) of $0.55 per $500 of consideration, which equals $1.10 per $1,000 of the taxable sale price, as established under Contra Costa County Documentary Transfer Tax Ordinance 64.6 and California Revenue & Taxation Code §11911. The rate itself is not negotiable, it's set by law. What IS negotiable is which party pays it.
According to the Contra Costa County Recorder, the county doesn't care who pays, it just needs to be paid and collected through escrow. Local custom in much of Northern California, including the Bay Area, is that the seller commonly covers the county DTT, but as Home Helpers Group's California DTT guide explains, some regional markets see buyers pay or a 50/50 split instead. It's a contract-level negotiation, and in a competitive market, sellers often have more leverage to push that cost to the buyer.
- City transfer taxes: East County vs. other parts of Contra Costa
Here's where East County sellers catch a break. Cities like Brentwood, Antioch, Oakley, Pittsburg, and Discovery Bay do not appear on county or title-company lists of cities with additional transfer taxes. Sellers there deal with the county DTT and standard closing costs, nothing extra layered on top.
That's not true everywhere in Contra Costa. Richmond charges an additional city DTT with tiered rates by price band: $7.00 per $1,000 for sales under $1 million, $12.50 per $1,000 for $1–3 million, $25.00 per $1,000 for $3–10 million, and $30.00 per $1,000 above $10 million, per the Contra Costa County Recorder. El Cerrito adds its own city tax as well, listed at $12.00 per $1,000 by Old Republic Title's Guide to Closing Costs. Cities like Walnut Creek, Concord, Pleasant Hill, and Lafayette, by contrast, have no additional city transfer tax, per Lametro Home Finder's Bay Area closing cost guide.
If you're selling in East County, you're in the simpler camp, but it's always worth confirming with your closing agent, since city tax ordinances can change.
Prep and discretionary costs
These are the costs that surprise sellers most, because they don't show up on a rate schedule. According to both the Old Republic Title Contra Costa Homeowners Manual and this East Bay seller cost breakdown, common discretionary items include:
Pre-listing inspections (general home, roof, pest), sellers who order these upfront often avoid larger repair credits later
Repairs and buyer credits, negotiated based on inspection findings and market conditions
Staging and cosmetic updates, not required, but can affect both days on market and final price
Natural Hazard Disclosure report, typically required in California; the provider and cost vary
Home warranty, optional, offered to the buyer as a contract item
HOA transfer fees and document fees, required in common-interest developments; amounts set by the HOA
None of these have predictable percentage patterns. They depend entirely on the property's condition, the current inventory environment in your specific submarket, and what buyers are demanding. In a tight market with multiple offers, you have more room to hold firm. In a softer one, credits and concessions become more common.
Your specific mix of prep costs is one of the first things I work through with every seller before we set a list price, because those costs affect your net, and your net is what matters.
How does the 2026 market affect what sellers actually pay?
Market conditions directly influence which costs are negotiable in practice. According to the June 2026 East Bay Real Estate Market Report, Contra Costa County as a whole saw sales up about 5%, prices up about 5%, and days on market down about 7% compared to a year earlier. That's a seller-favorable backdrop, and in those conditions, sellers are more often able to negotiate buyer participation in closing costs, whether that means sharing the transfer tax, limiting repair credits, or asking buyers to cover a greater share of escrow.
The same report highlights how much variation exists within the county. Pleasant Hill saw prices up 31%, sales up 44%, and days on market down 19%, a very different negotiating environment than a city sitting at 68 days on market. The Bay East Association of Realtors housing statistics track these month-by-month shifts for individual East County cities, which is exactly the kind of data that tells you whether you're in a position to push costs to the buyer or whether you need to come in more accommodating.
The Federal Reserve Bank of St. Louis FRED data series for Contra Costa County median listing prices shows a dip from $799,000 in April 2026 to $751,750 in August 2026, a reminder that even within a single year, price levels shift, and fixed-rate costs like the transfer tax produce different absolute dollar amounts depending on when and at what price you close.
Here's a look at recent median sale prices across East County and nearby areas, based on recent local market data (trailing approximately 90 days, as of September 2026). These are area-level medians, your home's value depends on condition, street, build year, and timing.
| Area | Median Sale Price | Median Days on Market |
|---|---|---|
| Brentwood | $753,800 | 47 |
| Discovery Bay | $795,500 | 48 |
| Antioch | $593,400 | 44 |
| Oakley | $689,000 | 47 |
| Pittsburg | $571,500 | 56 |
| Bethel Island | $590,100 | 30 |
| Bay Point | $510,750 | 68 |
| Clayton | $1,100,000 | 50 |
The spread between Bay Point and Clayton illustrates why no single cost estimate works for every seller. A $1.1 million sale in Clayton generates a meaningfully different transfer tax bill than a $510,000 sale in Bay Point, even at the same fixed rate. And the days-on-market gap between those two cities tells you something about the negotiating climate each seller is walking into.
For a clearer picture of where Brentwood specifically sits right now, the Brentwood real estate market update on this site goes deeper on local conditions.
Frequently Asked Questions
Who actually pays the transfer tax when I sell a house in Contra Costa County, me or the buyer?
California law does not specify who must pay the documentary transfer tax, it only requires that it be paid. In practice, local custom in Contra Costa and much of the Bay Area is that the seller commonly covers the county DTT, but as Home Helpers Group explains, some transactions split it or allocate it to the buyer instead. Who pays is a contract negotiation, not a legal mandate, and in a competitive market, sellers often have more leverage to shift that cost.
What closing costs do home sellers pay in Contra Costa County besides the real estate commission?
Beyond commission, sellers in Contra Costa typically see escrow charges, owner's title insurance, the county documentary transfer tax, recording fees to clear existing liens, prorated property taxes and assessments, and any HOA transfer or document fees, per the Old Republic Title Contra Costa Homeowners Manual. Sellers may also pay for a natural hazard disclosure report, pre-listing inspections, a home warranty offered to the buyer, and any repair credits negotiated during the transaction. The exact mix depends on your property and what's in your purchase contract.
Are escrow and title fees split 50/50 in East County or does the seller pay more?
By local custom, escrow fees are commonly split 50/50 between buyer and seller in California, including East County, according to both LegacySFHomes and this East Bay seller cost breakdown. Owner's title insurance is typically a seller-side cost by custom. Both allocations are negotiable in the purchase contract, so what you actually pay depends on the terms you and the buyer agree to.
What "miscellaneous" costs surprise East Bay home sellers, and can I avoid any of them?
The costs that catch sellers off guard most often are pre-listing inspection fees, HOA transfer and document fees, the natural hazard disclosure report, and repair credits that come out of the inspection negotiation, according to the Old Republic Title Contra Costa Homeowners Manual and this East Bay seller cost breakdown. Some of these are avoidable, a home warranty, for example, is optional. Others, like HOA fees in a common-interest development, are set by the association. The best way to avoid surprises is to get a clear picture of your likely cost categories before you list, not after you're in contract.
Thinking about buying in East County after your sale? The First-Time Homebuyer's Guide to East County covers what buyers in this market are navigating right now.
The bottom line on seller costs in East County
The cost to sell a home in Contra Costa County has a fixed-rate floor set by the county documentary transfer tax, and everything else is a negotiation. East County sellers are in a relatively straightforward position: no city transfer tax layers, a seller-favorable market backdrop heading into fall 2026, and enough inventory movement to have real conversations about who covers what in escrow.
What your specific closing costs look like depends on your sale price, your property's condition, your HOA situation, and what the market is doing in your specific city on the day you list. The only way to get a real number is to sit down and run through it together.
We put together a personalized net-sheet for every seller We work with before we ever talk about list price. If you want to know what you'll actually walk away with, schedule a conversation with me here, no obligation, just real numbers for your situation.
Schedule a consultation — we're happy to walk through the numbers for your situation — or
This article is general information only, not legal, tax, or financial advice. Verify all costs, tax obligations, market figures, and transaction specifics with your attorney, tax advisor, lender, or escrow officer before proceeding.
