What Is Mello-Roos?
Mello-Roos is a special tax used to finance public infrastructure in many California communities.
Unlike the standard property tax established under Proposition 13, Mello-Roos is generally not based on a property's assessed value. Instead, it is a special tax approved by local voters or landowners within a Community Facilities District (CFD).
Many newer California neighborhoods include Mello-Roos to help pay for roads, schools, parks, utilities, public safety facilities, and other community improvements.
If you're buying a home in California, understanding whether a property has Mello-Roos can be just as important as understanding its mortgage payment or standard property taxes.
- Value-Based Property Tax
- 1% General Levy
- Voter-Approved Debt
- Mello-Roos (if applicable)
- Parcel Taxes
- Other Special Assessments
The Mello-Roos Community Facilities Act of 1982
Mello-Roos is the common name for the Mello-Roos Community Facilities Act of 1982.
The law allows local governments to create Community Facilities Districts (CFDs) to finance public improvements and, in some cases, ongoing public services.
Instead of requiring all taxpayers to pay for new infrastructure, only properties located within the Community Facilities District are generally subject to the special tax.
Why Was Mello-Roos Created?
California communities often need expensive infrastructure before homes can be built. Examples include:
- Streets
- Traffic signals
- Sidewalks
- Schools
- Parks
- Fire stations
- Police facilities
- Water systems
- Sewer systems
- Storm drainage
- Libraries
Rather than paying all of these costs up front, local governments can finance the improvements through bonds that are repaid over time using Mello-Roos special taxes collected from properties within the district.
How Mello-Roos Differs from Property Tax
Many homeowners mistakenly believe Mello-Roos is simply another property tax. It is not.
| Standard property tax | Mello-Roos |
|---|---|
| Generally based on assessed value | Usually not based on assessed value |
| Governed primarily by Proposition 13 | Created under the Mello-Roos Community Facilities Act |
| Applies throughout California | Applies only within a Community Facilities District |
| Continues indefinitely while the property exists | Often has a stated duration, though terms vary by district |
A property can have:
- standard California property tax,
- voter-approved bond taxes,
- Mello-Roos,
- parcel taxes,
- and other special assessments.
These may all appear on the same annual property tax bill.
How Is Mello-Roos Calculated?
Unlike standard property taxes, there is no single statewide formula. Each Community Facilities District establishes its own method. Examples include:
- Fixed annual amount per home
- Amount based on lot size
- Amount based on square footage
- Amount based on property type
- Escalating annual schedule
- Other formulas adopted by the district
Because every district is different, two neighboring subdivisions may have completely different Mello-Roos charges.
What Does Mello-Roos Pay For?
Depending on the district, Mello-Roos revenue may fund:
- New schools
- Roads
- Bridges
- Parks
- Recreation facilities
- Street lighting
- Water infrastructure
- Sewer infrastructure
- Flood control
- Fire stations
- Police facilities
- Emergency services
- Libraries
- Public landscaping
Some districts also finance ongoing public services in addition to construction.
How Long Does Mello-Roos Last?
Many Community Facilities Districts issue long-term bonds. As a result, Mello-Roos may continue for:
- 20 years
- 30 years
- 40 years
- or another period established by the district
Some districts have scheduled expiration dates. Others may continue collecting taxes for different authorized purposes. The duration depends on the individual Community Facilities District.
How Much Does Mello-Roos Cost?
There is no statewide average. Annual charges can range from a few hundred dollars to several thousand dollars depending on:
- the Community Facilities District,
- the amount financed,
- the property's classification,
- and the district's adopted tax formula.
Because the calculation varies by district, it cannot be estimated accurately from purchase price or county alone.
Does Every California Home Have Mello-Roos?
No. Many properties have no Mello-Roos at all. Mello-Roos is more commonly found in:
- newer master-planned communities,
- recently developed suburban neighborhoods,
- areas where significant infrastructure was built before homes were constructed.
Older established neighborhoods are less likely to have Mello-Roos, although exceptions exist.
How Can I Find Out If a Property Has Mello-Roos?
Before purchasing a home, you can often determine whether Mello-Roos applies by reviewing:
- the property's annual tax bill,
- seller disclosures,
- title documents,
- county tax records,
- Community Facilities District information,
- or asking your real estate professional.
The annual property tax bill often lists the special tax separately.
Does Mello-Roos Affect Proposition 13?
No. Mello-Roos does not replace Proposition 13. Instead, it is generally an additional special tax.
Property Tax (1% + voter-approved debt) + Mello-Roos = Total Annual Property Tax Bill
A homeowner may therefore have both a relatively low Proposition 13 property tax and a significant Mello-Roos obligation.
Does Our Property Tax Calculator Include Mello-Roos?
No. Version 1 of the California Property Tax Calculator estimates:
- Proposition 13 assessed value,
- county-level value-based property tax.
It does not estimate:
- Mello-Roos,
- parcel taxes,
- Community Facilities District charges,
- or other parcel-specific assessments.
These amounts vary by property and cannot be accurately estimated using purchase price and county alone. Future versions of the site may include additional tools to help identify parcel-specific assessments.
Common Misconceptions
“Mello-Roos is part of Proposition 13.”
No. They are separate laws serving different purposes.
“Every new home has Mello-Roos.”
No. Many newer developments do not have Mello-Roos, while some older areas may contain Community Facilities Districts.
“Mello-Roos is based on my home's value.”
Usually not. Most Community Facilities Districts use their own adopted tax formulas.
“Mello-Roos lasts forever.”
Not necessarily. Many districts establish a defined financing period, although the specific duration varies.
Frequently Asked Questions
Is Mello-Roos tax deductible?
The federal tax treatment of Mello-Roos depends on the nature of the charge and current tax law. Homeowners should consult a qualified tax professional regarding their individual situation.
Can Mello-Roos be prepaid?
Some Community Facilities Districts permit prepayment of certain obligations, while others do not. Availability depends on the district's governing documents and financing structure.
Can Mello-Roos change?
Yes. The annual amount may change if permitted under the district's adopted tax formula or financing documents.
Does every county have Mello-Roos?
Many California counties contain Community Facilities Districts, but not every property is located within one.
Can Mello-Roos increase my monthly housing costs?
Yes. Because it is typically collected on the annual property tax bill, homeowners often include it when estimating their overall housing expenses.
Learn More
This guide provides a general educational overview of Mello-Roos Community Facilities Districts in California. Individual Community Facilities Districts establish their own financing documents, tax formulas, and collection methods. Homeowners and buyers should review the applicable district documents, county tax records, and consult qualified professionals regarding specific properties.