Mello-Roos and Rental Yield: The Charge That Hits the High-Yield Cities

A Mello-Roos charge is not based on your property's value and does not shrink as the bond ages. In Brentwood it takes a fifth of the net yield — and it is concentrated in the cities that look highest-yielding.

Mello-Roos is the reason an inland Bay Area rental can look like a 5% yield in a spreadsheet and arrive as something closer to 4%. It is a real charge on a real tax bill, it is not included in the "1.1% property tax" most pro-formas use, and it is concentrated in exactly the post-1990 subdivisions that make up the high-yield cities on this site.

What it is

The Mello-Roos Community Facilities Act of 1982 lets a local government form a Community Facilities District (CFD) and levy a special tax on property inside it to pay for infrastructure — streets, sewers, schools, parks — usually for a new subdivision.

California's Legislative Analyst's Office lists Mello-Roos taxes among the standard components of a property tax bill, alongside the 1% rate, voter-approved debt, parcel taxes and assessments (Understanding California's Property Taxes).

Two features of it matter for a yield calculation, and both cut against you.

It is not based on assessed value. The California constitution permits only the 1% rate and voter-approved debt to be charged on a property's value; everything else on the bill, Mello-Roos included, must be based on something else. In practice a CFD charge is set per parcel, or by lot size, square footage, or unit type. So it does not fall when values fall, and it is the same dollars on a cheap house as on an expensive one in the same district.

It does not shrink as the bond ages, and it often escalates. Many CFDs include an annual escalator — commonly up to 2% — and the charge runs until the bonds mature, typically 25 to 40 years from issue. A 1998 district may have 10 years left; a 2006 district may have 20.

What it does to a yield

Brentwood, one of the high-yield inland cities, at Zillow's September 2026 figures: value $782,072, rent $3,420 a month ($41,040 a year).

The gross yield is unchanged at 5.25% — Mello-Roos is invisible to a gross yield. The net yield falls by 0.60 percentage points, or 23% of the income. Levered at 25% down and 7%, the annual cash flow goes from −$26,030 to −$30,722.

How to find out whether a property has it

Before you offer:

1. The current tax bill, from the county tax collector, by parcel number. This is the single document that settles it: a CFD charge appears as a named line item ("CFD 2004-1", "Community Facilities Dist"), separate from the ad valorem total.
2. The Notice of Special Tax, which a seller of a home in a CFD must give a buyer under California law. It states the maximum tax, the escalator and the expiry.
3. The county auditor's tax rate area for the parcel, which gives the ad valorem rate — the 1% plus voter-approved debt — separately from the special taxes.

What to work out from it: the current annual charge, the maximum authorised charge (which may be higher than what is levied today), the escalator, and the year the bonds mature. A charge with 22 years to run on a property you intend to hold for 10 is a cost for your whole holding period and a deduction from your sale price at the end.

Two things it is not

It is not an HOA fee. A CFD charge is a tax, collected on the property tax bill, enforceable by tax sale. An HOA fee is a contractual assessment by a private association. A property can easily have both — and in a Brentwood or Discovery Bay subdivision, frequently does. Stacking both is what turns an apparent 5.25% gross into something under 2% net. See HOA fees and rental yield.

It is not deductible as a property tax in the ordinary way. The IRS allows a deduction for taxes levied at a like rate on all real property in the jurisdiction for general public purposes. A Mello-Roos charge that funds local benefits and is not levied at a uniform rate is generally treated as a non-deductible local benefit assessment, though charges for maintenance and interest may be deductible. This is a point for a tax adviser on the specific district, not a question with one answer.

The practical rule

Where a city's gross yield looks unusually good and the housing stock is newer than about 1990, assume there is a CFD until the tax bill proves otherwise, and model the tax line at the rate on the actual bill rather than at 1.1%. On a 2-3% net yield, 0.6 points of tax is a fifth to a quarter of the entire return.

Related: California property tax on a rental for the rest of the tax bill, and the high-yield East Bay for the cities where this applies.