Mello-Roos Taxes in San Diego: A General Overview

by Trevor Landress

Mello-Roos is a special tax that some San Diego homes pay in addition to the regular 1% property tax, and it can show up as its own line on the County tax bill. At the time this article was written (October 2026), the City of San Diego said its Mello-Roos special taxes are tied to the bonds a district sold, and they end once those bonds are paid. Not every home has one. This guide is a general overview for learning. It is not tax or legal advice, and I am not a tax professional or an attorney.

The short answer

Mello-Roos is a special tax from a Community Facilities District (CFD). It is separate from the general property tax.
It often helps pay off bonds that funded public projects, such as streets, water lines or schools.
The County Assessor has a Special Assessments page where charges can be looked up by parcel number.
Each district has its own formula and rules, so details differ.
This is general information only. Please talk with a licensed tax professional, an attorney or the district about your own situation.

What Mello-Roos is

Mello-Roos is a way for cities, school districts and other local groups to pay for public projects. The San Diego County Assessor explains that a group needs approval before it can form a Community Facilities District, or CFD. Approval comes from the landowners or from a vote of registered voters in the area.

Once a CFD exists, it can sell bonds to pay for projects. The special tax on each property helps pay back those bonds. The City of San Diego says its special taxes support payments to bondholders. So the tax is tied to a debt.

Mello-Roos is different from the general property tax. The 1% general tax is covered in my overview of how San Diego property taxes work. The special tax is a separate charge, and its formula is set when the district is formed.

How people learn whether a home has Mello-Roos

The County Assessor's website describes where to look. It is a general starting point, and details come from each district.

The parcel number appears on a property tax bill, and the County has tools that can look it up by address.
The County's Special Assessments page lists Mello-Roos charges and special assessments by parcel number.
The County Auditor and Controller keeps a list of active districts. The Assessor says detailed information comes from the district's administrator, often a city.

The Assessor says district details can include the bond information, what the bonds paid for and how the special tax may change. Because details differ, the district itself is the right place to ask.

How it can show up on a tax bill

The City of San Diego says a CFD special tax appears on the County property tax bill as a separate charge from the 1% general tax. The line item shows the district name and the amount for the tax year.

The City says the special tax is collected with the general property tax on the County bill, and late payments are treated like late general property tax payments. The amounts, dates and penalties are set by the district and the County, so the bill and the district are the places to confirm them.

What the City says about unpaid special taxes

The City of San Diego explains that unpaid special taxes work differently from unpaid general taxes. It says the City can remove a late amount from the County tax roll and start a judicial foreclosure case against the parcel. The City says this process is faster than a County tax sale for general taxes.

The City says this is connected to the bond rules, which can require it to act on late amounts. This is the City's description of its own districts. Other districts can have other rules, and an attorney is the right person to explain how any of this applies to a certain property.

How long it lasts

At the time this article was written, the City said its special taxes end when the district's bonds are fully paid. For the City's districts, that is no more than 30 years after the first bond sale. The City's own table lists final bond dates that run as late as 2037, depending on the district.

Other agencies run their own districts, so the end date can differ. The City also says each district's formula covers topics such as early payoff and appeals, and that people can contact the City's CFD administrator. The City's website lists the contact details.

Disclosure when a home is sold

The City says California law requires sellers to make a good faith effort to disclose a CFD special tax or special assessment when they sell a home. A real estate contract and an attorney can explain how that applies to a given sale.

For general background on how a review period works during a purchase, see my overview of home buying contingencies in San Diego.

Please talk with a professional

Mello-Roos is a tax and legal topic. I am a REALTOR, not a tax professional or an attorney. This guide summarizes public pages from the City of San Diego and the County Assessor so you can learn the basic terms. It does not tell you what applies to you.

Every district has its own formula, end date and rules, and other cities and school districts may do things differently. For questions about a specific home or bill, please contact the district and talk with a licensed CPA, tax professional or attorney.

Questions people bring to the district or a professional

What does this district's special tax pay for?
How much is the yearly amount, and how can it change?
When does the special tax end?
How does the district handle early payoff or appeals?
How does the special tax fit with my loan and my disclosures?

Call or text me at (619) 402-4614 or send me a message.

Call or text (619) 402-4614 Contact Trevor Landress

Related guides

Frequently asked questions

What is Mello-Roos in San Diego?

It is a special tax from a Community Facilities District that helps pay for public projects, often through bonds. The City of San Diego says it appears on the County property tax bill as a separate charge from the 1% general tax.

How can I find out if a house has Mello-Roos?

The County Assessor has a Special Assessments page that lists Mello-Roos charges by parcel number. The district can give details. A real estate professional, tax professional or attorney can help you understand what you find.

How long does Mello-Roos last in San Diego?

At the time this article was written, the City of San Diego said its special taxes end when the district bonds are paid off, which is no more than 30 years after the first bond sale. Other districts may differ.

What happens if a Mello-Roos payment is late?

At the time this article was written, the City of San Diego said late special taxes are treated like late general taxes, and that the City can also start a foreclosure case. Please ask the district and an attorney how this applies to a specific property.

Do sellers have to disclose Mello-Roos?

The City of San Diego says California law requires a good faith effort to disclose a special tax or special assessment when selling. An attorney can explain how that applies to a particular sale.

About the author

Trevor Landress is a San Diego REALTOR® with Coldwell Banker West (DRE# 02126901). He was born and raised in San Diego and has been licensed since 2021. Trevor helps homeowners sell, guides first-time buyers through the home buying process and assists investors with their next acquisition. His work includes negotiating offers, analyzing market trends, building pricing strategies and running marketing campaigns for his listings.

He serves clients across San Diego County, from coastal communities like La Jolla, Del Mar and Carlsbad to neighborhoods inland. Trevor is part of the Campbell Group, a three-generation real estate team, and he and the Campbell Group consistently rank as a top producing team at Coldwell Banker West each month. He writes these guides to help San Diego buyers and sellers navigate an ever-changing market.

Each guide on this blog is built from official or primary sources, and the text names the source and the month it was checked. When a fact can go stale, such as a rate, a fee, a deadline or a rule, the guide says so. The goal is plain answers you can use before you make a big decision.

Trevor is a REALTOR, not a tax advisor, attorney, lender or contractor. For questions in those areas, he recommends you check with the right professional. To talk through your plans, call or text (619) 402-4614 or contact Trevor Landress.

How I help San Diego home buyers

Trevor guides first-time buyers through the home buying process, from setting a budget to closing. His work includes negotiating offers and analyzing market trends so buyers understand what a home may really cost to own.

How I help San Diego home sellers

Trevor helps homeowners sell with pricing strategies, marketing campaigns, offer negotiation and market analysis, so sellers know what to expect before they list.

Sources

This guide is general information only. It is not tax, legal or financial advice, and I am not a tax professional or an attorney. Please talk with a licensed CPA, tax professional or attorney, and with the County or the agency named above, before you make any decision.