A Berkeley home that sells for $1,700,000 owes the city $25,500 in transfer tax. Sell it for one dollar more and the city tax is about $42,500. The City of Berkeley's own property transfer tax page shows the rule behind that jump. The rate is 1.5% on properties up to $1.7 million and 2.5% above it, and the rate applies to the entire price. The city's example says a $2 million sale owes $50,000.
Most cities with a tiered tax have a cliff like this. In Berkeley it matters more because sellers do not choose the final price. Bidding does. And on January 1, 2027, Measure W adds new cliffs. The Berkeley seller with the clearest picture of their net is the one who knows which line their bidding could push them past.
The list price is not the number that gets taxed
Berkeley homes are routinely listed well below where they end up. The Bay East Association of REALTORS® September 2026 report for Berkeley and Kensington detached homes shows:
- an average list price of $1,368,041 in September 2026
- a median sale price of $1,800,000
- buyers paying 137% of list price on average
The same report puts the average time on market at about 16 days, with 1.3 months of inventory at the end of September.
Run a typical home through those averages. It lists at $1.3 million, which is well inside the 1.5% bracket, and closes at 137% of list, or about $1,781,000. That is past the $1.7 million line, so the whole price is taxed at 2.5% and the city tax is about $44,500. At the list price it would have been $19,500. The seller set the list price, but the bidding set the tax bracket.
Under an incremental system, where each rate applies only to the dollars above its threshold, crossing a line costs a little. Berkeley's system works differently. In the July 30, 2024 City Council report that put Measure W on the ballot, each rate is a percentage of "the value of consideration" for the whole transaction. The thresholds in that draft differ from the ones voters approved, but the method is the same. Cross a line and every dollar of the sale moves to the higher rate.
January 1, 2027 adds two more lines
Berkeley voters passed Measure W in November 2024 with 61% approval. Starting January 1, 2027, the measure sets the tax at 2.5% for properties valued at $1.6 million or more, 3% at $1.9 million or more, and 3.5% at $3.0 million or more. It also removes the January 1, 2029 expiration that applied to the earlier Measure P rate.
Those dollar figures are the starting values from the ballot question, and they will move before the measure takes effect. The city says the thresholds were set at the 60th, 80th and 95th percentiles of sales in the 12 months before September 1 of the prior year, rounded to the nearest $100,000, and "will be recalculated prior to the effective date." As of mid-October 2026, the city's page still shows the original figures. So the table below uses the ballot thresholds to show how the tiers work. The final 2027 numbers may differ.
| Sale price | City tax today | City tax in 2027 at ballot thresholds |
|---|---|---|
| $1,650,000 | $24,750 at 1.5% | $41,250 at 2.5% |
| $1,800,000 | $45,000 at 2.5% | $45,000 at 2.5% |
| $1,899,999 | $47,500 at 2.5% | $47,500 at 2.5% |
| $1,900,000 | $47,500 at 2.5% | $57,000 at 3% |
| $2,000,000 | $50,000 at 2.5% | $60,000 at 3% |
| $3,000,000 | $75,000 at 2.5% | $105,000 at 3.5% |
Read down the right-hand column. The step from $1,899,999 to $1,900,000 adds $9,500 in tax. The step to $3 million adds $15,000 compared with the 3% rate just below it. Today there is one cliff. Next year there will be three, and the gaps between them are no wider than the spread of offers on a single Berkeley listing.
Where Berkeley sales actually land
The new lines run through the busiest part of the Berkeley market. Bay East's year-to-date price bands for Berkeley and Kensington through September 2026 count 486 detached sales. Of those, 119 closed between $1.3 million and $1.699 million, 87 between $1.7 million and $1.999 million, 115 between $2 million and $2.999 million, and 43 above $3 million.
That puts about 9% of this year's sales above $3 million. The $1.6 million and $1.9 million lines each fall inside a busy band, which makes the next point important. Monthly medians rose over the past year, from $1,614,000 in September 2025 to $1,800,000 in September 2026. The 2027 thresholds will be recalculated from recent sales, so they are tied to the same prices that bidding keeps pushing up. Until the city publishes the new figures, any seller planning for 2027 is working with estimates.
Inventory also thins out at year end. In December 2025, the report shows just 17 active listings at month end, against 44 sales.
What a seller can actually work with
Some parts of the transfer tax are fixed by law. Others are open. These four come up most often in Berkeley deals:
- The January 1 effective date. The city lists January 1, 2027 as the start date for Measure W's higher tiers. If a sale is expected to close around the turn of the year, ask your escrow officer how that date applies to your transaction before you set a timeline.
- Who pays. Customs differ between counties. A Piedmont Exedra report on Piedmont's council agenda described Alameda County city transfer taxes as typically split between buyer and seller, with the parties free to agree otherwise. Who pays can be part of the offer terms. That affects how two offers a few thousand dollars apart actually compare.
- The seismic and home-hardening rebate. Berkeley offers a rebate for voluntary seismic upgrades and permanent home-hardening work. The total for any combination is up to one-third of the base 1.5% transfer tax. The rebate does not apply to the additional 1% charged in the upper tier. The city's Seismic Retrofit Rebate page lists the eligibility rules.
- Net math during offer review. When offers cluster near a threshold, the highest price is not always the best net. Ranking each offer by what the seller keeps after the city tax gives a different order than ranking by price alone.
The same price in five cities
The cliff is specific to Berkeley. A $2 million sale is taxed very differently a few miles away.
| City | Local rate on a $2,000,000 sale | City tax | Upcoming change |
|---|---|---|---|
| Berkeley | 2.5% | $50,000 | Measure W tiers from January 1, 2027 |
| Oakland | 1.5% | $30,000 | Measure FF on the November 3 ballot covers foreclosures |
| Piedmont | 1.3% | $26,000 | Measure GG on the November 3 ballot would raise the rate to 1.75% |
| Lafayette, Orinda, Moraga, Walnut Creek | No city levy | $0 | None listed |
Oakland's rates are tiered by price: 1.00% up to $300,000, 1.50% from $300,001 to $2,000,000, 1.75% from $2,000,001 to $5,000,000, and 2.50% above $5,000,000. The city notes that buyer and seller are jointly and severally liable. Oaklandside reports that Measure FF would generally require foreclosing lenders to pay the existing tax.
Piedmont charges $13 per $1,000. Voters there decide Measure GG on Tuesday, November 3. If it passes, the rate rises to $17.50 per $1,000 on July 1, 2027. No argument opposing it was filed.
All Alameda County sales also pay the county's documentary transfer tax of $0.55 per $500, or about 0.11%. A December 2025 statewide rate compilation lists Contra Costa County at the same $1.10 per $1,000, with no additional city tax in Lafayette, Moraga, Orinda or Walnut Creek. On a $2 million sale, the county tax is $2,200 in either county.
Quick answers
Is Berkeley's transfer tax incremental? No. The rate for a price tier applies to the full sale price, so crossing a threshold raises the tax on every dollar.
What are the exact 2027 thresholds? The ballot set starting points of $1.6 million, $1.9 million and $3.0 million. The city will recalculate them from recent sales percentiles before January 1, 2027.
Does the rebate cover the higher rates? The rebate is capped at one-third of the base 1.5% tax. It does not reduce the additional rate charged above the threshold.
Does this affect buyers? Yes, where the purchase contract has the buyer paying part of the city tax, which the Alameda County custom described above often involves.
This post is general information, not legal, tax or financial advice. Confirm how these rules apply to your sale with your escrow officer, tax advisor or attorney.
If you are thinking about a Berkeley sale this winter, it helps to map your likely price range against both this year's threshold and the 2027 tiers before you set a list price. Ann Newton Cane can walk you through that math privately. Request a Confidential Home Valuation.
