A Mello-Roos tax in California is a special annual charge on properties inside a Community Facilities District (CFD), used to repay bonds that funded local infrastructure or to pay for ongoing public services. It sits on top of the standard one-percent property tax set by Proposition 13 and can add several thousand dollars a year to a tax bill.1California Legislative Information. California Government Code 53311 The tax is authorized by the Mello-Roos Community Facilities Act of 1982 and is most common in newer developments across Southern California, the Inland Empire, and the Sacramento metro area, where existing tax revenue was not enough to cover new roads, schools, water lines, and parks.
A single property can fall within more than one CFD, so some homeowners pay multiple Mello-Roos taxes at the same time.
What the Tax Pays For
CFD money funds two different things, and the difference matters because it controls how long you keep paying.
The first is physical facilities with an estimated useful life of at least five years: parks, schools, libraries, child care facilities, water and sewer systems, utility lines, roads, flood-control infrastructure, and other government facilities the local agency is authorized to build. The facilities do not have to sit inside the district boundaries.2California Legislative Information. California Government Code 53313.5
The second is a narrower list of ongoing services: police protection (including criminal justice services tied to jails and detention facilities), fire protection and ambulance, recreation programs, library services, school maintenance, park and street lighting upkeep, flood and storm protection operations, and hazardous substance cleanup.3California Legislative Information. California Government Code 53313 Facility bonds eventually pay off; service taxes can continue indefinitely, because the underlying cost never ends.
How the Tax Is Calculated
A Mello-Roos tax cannot be based on property value. That is the whole reason it sits outside Proposition 13’s one-percent cap.4California Legislative Information. California Government Code 53321 Instead, the rate and method of apportionment are written into the district’s formation documents. Common formulas charge a flat amount per dwelling unit, an amount based on building square footage, or a rate per acre. Different land uses inside the same CFD can be taxed at different rates, so a commercial lot and a single-family home in the same district often owe very different amounts.
For residential parcels, the maximum special tax must be set as a specific dollar figure no later than the point the parcel first becomes subject to the tax. Many formation documents include an annual escalation factor, often around two percent, but that rate is set by the individual district rather than by a statewide statutory cap. Each year, the total amount collected across the district has to cover the bond principal and interest due plus the administrative cost of running the district.
How Long Mello-Roos Taxes Last
CFD bonds can run for up to 40 years, and most issues run between 20 and 40.5California Legislative Information. California Government Code 53351 When the bonds are fully repaid, the special tax tied to that debt stops, and homeowners sometimes see a noticeable drop in their tax bill when a long-running CFD finally matures.
The exception is a service-based CFD. A district funding park maintenance, street lighting, or fire protection can keep levying its tax after capital bonds are retired, because the tax is tied to the continuing cost of the service rather than to a bond payoff. Whether that applies to your property depends on what the district’s formation documents actually say.
Prepaying a Mello-Roos Tax
Some CFDs let a property owner pay off their share of the bond obligation in a lump sum and end the annual tax permanently. Whether prepayment is available depends entirely on the district’s formation resolution; the statute allows but does not require the local agency to include prepayment terms.4California Legislative Information. California Government Code 53321 If prepayment is allowed and completed, the agency records a Notice of Cancellation of Special Tax Lien against the property, closing the obligation for good.6California Legislative Information. California Government Code 53344
The payoff amount is not the annual tax multiplied by the remaining years. The district’s financial administrator calculates a figure that accounts for the remaining bond principal, interest the district will lose to early payoff, and an administrative fee that can run several hundred dollars just for the calculation. Partial prepayments are typically not accepted. To get a real number, contact the district administrator listed on your tax bill and request a payoff quote and timeline.
What Happens If You Do Not Pay
Mello-Roos carries the same enforcement teeth as regular property tax. The special tax is secured by a continuing lien and is collected in the same manner, with the same penalties and sale procedures, as ordinary ad valorem taxes when a bill goes delinquent.7Justia. California Government Code 53340 Fall behind and you face late penalties, interest, and eventually foreclosure proceedings brought by the local agency.8California Legislative Information. California Government Code 53356.5
Some homeowners treat Mello-Roos as a fee rather than a real tax. It is not optional, and it is not subordinate to the mortgage. Missing it can put a home at risk as quickly as missing the base property tax.
Buying a Home With a Mello-Roos Tax
Mello-Roos affects what you can afford. Mortgage lenders roll the tax into your total monthly housing payment when they calculate your debt-to-income ratio, so a property with $3,000 or $5,000 in annual Mello-Roos reduces the loan you qualify for compared with an otherwise identical property without a CFD. Buyers in high-CFD areas sometimes find themselves priced out of homes that looked affordable at the listing price.
On resale, a home with a noticeably higher tax burden than nearby comparable properties can sit longer or trade at a slight discount. When a CFD bond is close to payoff and the levy is about to drop or end, the pending relief can support long-term value.
Seller Disclosure
California law requires a seller to make a good-faith effort to obtain and deliver a disclosure notice about any Mello-Roos special tax on the property before closing, under Civil Code Section 1102.6b. The notice must include the name of the CFD, the current annual tax, the maximum tax that can be levied in any year, the percentage by which that maximum may increase each year, and the date through which the tax may be collected.9California Legislative Information. California Civil Code 1102.6b A seller who fails to deliver the notice may expose themselves to buyer remedies.
Do not rely on that disclosure alone. Pull the full property tax bill from the county tax collector’s website and look for any line items labeled “CFD Special Tax” or similar. Ask your agent or escrow officer for the Rate and Method of Apportionment for each CFD on the property so you know the maximum tax and remaining term before you commit.
Federal Tax Deductibility
Mello-Roos special taxes are generally deductible as real estate taxes on a federal return, because they are imposed as taxes by a government authority rather than structured as assessments for specific local improvements. The deduction is only available if you itemize, and it falls under the state and local tax (SALT) cap. For the 2025 tax year, that cap was $40,000 for most filers and $20,000 if married filing separately, adjusting upward slightly each year through 2029.10Internal Revenue Service. Publication 530, Tax Information for Homeowners
Many California homeowners hit the SALT cap from base property tax and state income tax alone, which can leave the Mello-Roos portion providing no additional federal deduction. If your combined state income tax and property taxes already exceed the cap, you are effectively paying the Mello-Roos tax with after-tax dollars. Factor that into affordability math when you compare properties inside and outside a CFD.
How to Check Whether a Property Is in a CFD
For a home you already own, the annual property tax bill is the most reliable source. The Mello-Roos charge appears as a separate line item from the one-percent general levy, labeled with the CFD name, the amount, and contact information for the district.
For a home you are considering buying, start with the seller’s required disclosure under Civil Code Section 1102.6b, then verify against the county tax bill. County assessor and tax collector websites often let you search by address or parcel number and view every charge on the bill, including any active CFDs. You can also contact the city or county that formed the district and request the Rate and Method of Apportionment document, which spells out the maximum tax, escalation formula, and remaining term. If the property sits inside more than one CFD, ask for the documents for each; the terms and tax calculations run independently.