Mello-Roos in the Bay Area

How Mello-Roos Works

Mello-Roos comes from the California Mello-Roos Community Facilities Act of 1982, named after the two legislators who wrote it, Henry Mello and Mike Roos. The law lets a local government form a Community Facilities District (CFD), a special taxing zone drawn around a new development, and issue bonds to pay for infrastructure: schools, parks, roads, public-safety facilities, water and sewer lines.

Those bonds are borrowed money, and the people who buy the homes in that zone pay the debt back. Each parcel inside the CFD carries an annual charge, layered on top of the standard property tax, until the bonds are paid off.

This is where many buyers get surprised. Proposition 13 (Prop 13) caps the base property-tax rate at 1% of a home's assessed value. Mello-Roos is not capped by that rule, because it is not an ad-valorem tax. An ad-valorem tax is one calculated from the assessed value of the property; the 1% base tax is ad-valorem, so it rises and falls with value. Mello-Roos is a special assessment instead, a fixed per-parcel charge set by the bond, not by what your home is worth. So it sits outside the Prop 13 cap entirely.

Mello-Roos is only one line on your tax bill, so it helps to see how your overall California property tax is calculated before you weigh what a CFD adds.

What Mello-Roos Costs

In Bay Area tracts that carry it, the charge typically runs about $1,500 to $4,000 per year per parcel. That works out to roughly $125 to $333 per month, on top of the regular property tax.

The range is wide because each tract is different. The size of the original bond, the number of homes sharing the debt, and whether more bonds were later added all change the number. At the high end, the largest master-planned districts run meaningfully higher, and two homes a mile apart can carry very different charges.

That is why the figure has to be read off the specific property, not estimated from the neighborhood. The exact charge is fixed per parcel and recorded on that home's title report, known in the trade as the prelim (the preliminary title report). Treat any area range as a planning number only. The real figure comes off the prelim, and this page is general information, not tax advice.

For a buyer, the practical effect is on the monthly payment. A $3,000 annual charge adds $250 a month to your housing cost, every month, for the life of the bond, and a larger charge scales the same way. Either way it belongs in your budget from the start, not after the offer.

Which Bay Area Areas Have Mello-Roos, and What It Costs by City

Mello-Roos follows large new-construction, master-planned development. In the Bay Area, that means the East Bay and the nearby Central Valley far more than the urban core.

These figures are verified off county secured tax rolls, including tracts that carry no Mello-Roos at all, and every parcel's exact charge still has to be verified off its own title report. Compare all 38 cities side by side on the interactive Bay Area property tax map.

Weighing a newer small multi-family building? The Bay Area multi-family rules map covers each city's rent rules across the same 38-city footprint.

Figures are verified against county secured tax rolls (Alameda, Contra Costa, and San Joaquin; fiscal year as noted per row). Amounts escalate over time and vary by home size, lot size, and phase within the same development, so verify your exact parcel off its title report or the county tax bill. General information, not tax advice. See how to look one up, or send me the address and I will pull it for you.

Dublin

Dublin is the most common place Bay Area buyers meet Mello-Roos, concentrated in the newer East Dublin tracts. The clearest documented case is Dublin Crossing, the "Boulevard" master plan, where the facilities district (CFD No. 2015-1) levies about $3,912 to $5,830 a year per single-family home depending on home size in FY 2024-25, with the maximum allowed to escalate up to 2% a year and no special tax levied after fiscal year 2050-51 (a separate services district adds its own charge on top). Other Dublin tracts carry their own districts with different amounts and end dates, so the exact charge still has to be read off the specific parcel's title report. This is general information, not tax advice.

San Ramon

In San Ramon, the charge concentrates in the Dougherty Valley area, including Gale Ranch and Windemere. Many parcels here carry more than one overlapping Community Facilities District (CFD), so the charges can stack and each one has to be checked separately. There is a typical range, but it varies enough that it has to be verified per address off the title report rather than estimated. This is general information, not tax advice.

Livermore

Livermore carries Mello-Roos only on newer construction, and older tracts often carry little or none, so there is no reliable citywide figure. Any charge there has to be verified per address off the title report. This is general information, not tax advice.

Brentwood

Brentwood's Mello-Roos shows up in the newer Contra Costa County subdivisions rather than the older parts of town, spread across several city districts. The amount varies by subdivision and phase, so treat any range as a starting point and verify the exact charge per address off the title report. This is general information, not tax advice.

Danville

Most of Danville is older housing that carries little or no Mello-Roos. Where a newer parcel does sit inside a Community Facilities District (CFD), the charge has to be verified per address off the title report rather than assumed from the town. This is general information, not tax advice.

Mountain House

Mountain House is a master-planned community where Mello-Roos is common and among the higher-cost cases in the region. Its Community Services District charges are formula-based, computed per 100 square feet of lot and living area, so a larger home pays more, and several overlapping districts (roads, public safety, parks, public works, plus school and infrastructure districts) can apply to the same parcel. Because the total depends on the specific home and phase, verify the exact charge off that parcel's title report. This is general information, not tax advice.

Pleasanton

Pleasanton has mostly none, with what little exists being largely legacy, so on most Pleasanton homes Mello-Roos is not a factor. Either way, confirm the specific parcel rather than assuming from the city.

Where it is largely absent is just as useful to know. San Francisco, the Peninsula, and most of the South Bay do not carry meaningful Mello-Roos, because they have little master-planned new construction at this scale. Mello-Roos pays for the infrastructure of brand-new neighborhoods, and those areas were built out long ago. If you are buying older housing stock in an established part of the region, Mello-Roos usually is not a factor. If you are buying new construction in the East Bay or out toward the valley, assume it is until you have confirmed otherwise.

How to Look Up Mello-Roos on Any California Address

If you would rather check it yourself, here is the order to work in on any California parcel. If that is more digging than you want to do, send me the address and I will pull it all for you.

1. Find the parcel's APN (Assessor's Parcel Number, the county's unique ID for the lot). Search the county assessor's site by street address and note the APN it returns.
2. Open the county tax collector's property-tax lookup and enter the address or the APN. This is the office that bills and collects the tax, and it shows the actual charges on the parcel.
3. Open the current annual property-tax bill for that parcel and scroll to the special-assessment, direct-charge, or fixed-charge section, usually below the base tax amount.
4. Identify the CFD line items. In that section, identify any line items labeled CFD, Community Facilities, Mello-Roos, or Special Tax. Note the annual amount and which district is levying it.
5. Contact the district administrator and ask for the bond end year and whether a prepayment (payoff) option is available. Their contact information is tied to the levying district on the bill.
6. Cross-check the prelim and disclosures. Cross-check what you found against the preliminary title report and the seller's disclosures, which should also disclose the Mello-Roos. If anything conflicts, that is worth resolving before you write the offer.

Mello-Roos vs. School-District Parcel Taxes

Both Mello-Roos and a school-district parcel tax appear on the tax bill as "special assessments" sitting above the 1% base rate, so they are easy to confuse. The mechanisms are different.

A school-district parcel tax is a flat charge, usually $300 to $800 per year, approved by a two-thirds vote of the district's residents to fund local schools. It applies broadly across the district, old homes and new alike, and it is modest.

Mello-Roos is bond debt tied to a specific new development, often many times larger, and it exists only inside the CFD that issued it. When you see "special assessment" on a bill, that is the first clue to look closer, but it does not by itself tell you which of these two you are looking at, or how large the charge is. The prelim does.

How Lily Garipova Protects Buyers From the Mello-Roos Surprise

The canonical failure with Mello-Roos is one of timing. Buyers discover the charge when they read the prelim, and by then they may have already removed their contingencies, the conditions that let them back out. Buyers in Dublin Boulevard new-construction run into this regularly: the home pencils out on the listing price, the offer is accepted, and only afterward does a $3,000-a-year charge appear on the title report. At that point the choice is narrow: absorb a cost you did not plan for, or walk away and risk your earnest money (the good-faith deposit, often 1 to 3% of the price, that you put down with the offer to show you are serious).

Lily Garipova works the problem in the opposite order. She checks for Mello-Roos before the offer goes in, reads the prelim, and identifies the per-parcel charge, the sunset date, and any additional bond issuances. Where it is warranted, she can build a property-tax-research contingency into the offer: a written condition that gives you a defined window to verify the full tax picture and withdraw with your earnest money protected if the numbers do not work. That is a fourth contingency, added alongside the three standard ones, the inspection contingency, the appraisal contingency, and the loan contingency.

With that groundwork done, a buyer who finds Mello-Roos at the table has real options instead of a trap:

1. Walk away with earnest money retained, if the property-tax-research contingency was written into the offer.
2. Accept the home and adjust the monthly cost projection to include the charge, going in with eyes open.
3. Negotiate a price reduction equal to the present value of the remaining payments, so the seller absorbs part of the cost.
4. Walk away and forfeit the earnest money, the only exit left if no contingency was in place to protect you.

The first three are available because the work was done before the offer. The fourth is what happens when it was not.

This is where local concentration matters. Across 104 documented closings and more than $115M in total volume, 91 of them on the buyer side, Lily's transaction history is concentrated exactly where these tracts are: 33 closings in Alameda County, including Dublin, and 21 in Contra Costa County, including Brentwood. She has been in real estate since 2007 and California licensed since 2016 (Cal DRE #02010731), and she works with clients in English and Russian.

Every property is different, and the only reliable Mello-Roos figure is the one read off your specific prelim. If you are looking at new construction in the East Bay or anywhere these charges turn up, reach out before you write the offer and we will check the tax picture together.

Mello-Roos Across California

Mello-Roos is a California law, not a Bay Area one. The same Community Facilities District (CFD) special taxes you see in the Tri-Valley also fund newer master-planned neighborhoods across Southern California, and they are common in Los Angeles, Orange, and Riverside counties. Everything this page explains, how the CFD charge is set per parcel, how to read it off the tax bill, and when the bond ends, applies anywhere in the state.

My own practice is the Bay Area, so I am not the right agent to represent you on a purchase in Los Angeles or Orange County. But if you are buying elsewhere in California, send me the address anyway. I am glad to check it for Mello-Roos and, through my brokerage, introduce you to a strong local agent. That is the honest scope of what I can offer at a distance: the address check and the introduction, and nothing I would promise beyond that.

If you are weighing the Bay Area against another part of California before a move, my guide to moving to the Bay Area walks through how the taxes, costs, and neighborhoods compare.

Mello-Roos FAQ