Two buyers walk into escrow on the same week, both closing on San Marcos homes priced within a few thousand dollars of each other. One gets a loan estimate with a monthly payment that lines up with what they expected. The other's comes back $250 higher, same rate, same down payment, same loan amount. Nothing in the listing photos explained the gap. The difference was sitting on the property tax bill the whole time, in a line item most buyers don't read until it's too late to negotiate around it.
That line item is Mello-Roos, and in San Marcos it isn't a footnote. It's a structural fact of the city's housing stock, and it doesn't behave the way most buyers assume.
Why San Marcos Has So Much of It
Mello-Roos taxes come from California's 1982 Community Facilities Act, which let cities create special tax districts to fund the roads, sewers, parks, and schools that Proposition 13's 1 percent cap on property taxes couldn't cover. San Marcos leaned on this tool heavily as it built out its hillside subdivisions in the late 1980s and 1990s. The city's own finance department maintains active Community Facilities District records for districts including CFD 88-01, CFD 99-01, and CFD 2002-01, and one long-running local resource dedicated to the Santa Fe Hills neighborhood states plainly that homes built in San Marcos from 1988 forward are typically part of one of these districts.
That single fact reframes the search. In San Marcos, the question isn't whether a newer home has Mello-Roos. It's which district, how much, and for how long.
The Same Neighborhood Doesn't Pay the Same Rate
Here's where the assumption most buyers carry into a San Marcos search breaks down. People treat a master-planned community like San Elijo Hills as a single pricing unit; buy in the neighborhood, pay the neighborhood's tax. But San Elijo Hills sits under CFD 99-01 and CFD 2002-01, and those districts are subdivided into separate improvement areas that don't all carry identical rates.
Community disclosures dated around 2013 show this unevenness directly. When a round of bond refinancing worked through San Elijo Hills, letters describing reduced special tax rates went out only to specific sections, including Mariners Landing, Meridian, and Creek Side Cottages. Other sections of the same community didn't receive the same reduction. The city's own bond records confirm refinancing has continued well beyond that single round: CFD 88-01 was refinanced in 2012, CFD 99-01 in 2014, 2018, 2021, and 2024, and CFD 2002-01 in 2021. Each refinancing lowers the interest cost on a specific bond series, and those savings flow only to the parcels tied to that series, not evenly across the whole master plan.
The practical result: two townhomes a few streets apart in San Elijo Hills, both built the same year, can carry different Mello-Roos bills depending on which improvement area and which bond series their parcel falls under. A listing price tells you none of this.
Two Kinds of Mello-Roos, and Only One of Them Ends
The other pattern buyers miss is that a single CFD bill often bundles two different taxes with two different lifespans.
Santa Fe Hills, under CFD 88-01, shows the split clearly. According to the district's own published disclosures, the facilities tax, the portion that repaid bonds for roads, water lines, school sites, and a fire station, ran roughly $1,393 to $2,545 a year depending on the improvement area. The first improvement area's facilities tax was scheduled to expire in September 2019, so by now that piece should be gone for those parcels. Two other improvement areas weren't due to sunset until September 2027, a little over a year from today, which means their facilities tax is likely still showing up on the bill.
The second piece works differently. A services tax that funds ongoing police and fire protection started at $151.38 a year in the district's disclosures and, by design, never expires. It's built to increase 2 percent annually for as long as the property exists. Whatever the current-year dollar figure is today, the structure hasn't changed: one part of the bill has a countdown clock, and one part doesn't.
A Mello-Roos bill isn't one number. It's often two numbers layered together, one with a countdown clock and one without.
This is the detail that trips up buyers comparing a 1990s San Marcos resale to a newer build. An older home's Mello-Roos might be most of the way through its facilities-tax term, leaving only the smaller, permanent services charge. A newer home in a district still years from bond payoff carries the full weight of both.
What This Means While North City Reshapes the City's New-Construction Map
San Marcos isn't finished building. North City, the roughly 200-acre downtown development next to Cal State San Marcos, is on track to bring a total of 3,400 new homes as part of a $2 billion buildout, with about 400 of those units set aside as deed-restricted affordable housing, according to an April 2026 Voice of San Diego report. Mayor Rebecca Jones, in office since 2018, has pointed to the project as evidence that deliberate planning, not simply approving whatever developers propose, produces better outcomes for the city.
That planning philosophy extends to infrastructure financing. San Diego North Economic Development Council CEO Erik Bruvold, discussing how North County cities are handling state housing mandates, noted that officials are now "proactively working with folks within the confines of the state law" rather than resisting growth outright. Bruvold also flagged that infill projects like North City still need funding tools for the roads and utilities that come with density, which is the same underlying need Mello-Roos was created to solve decades ago.
The takeaway for a buyer isn't that North City definitely carries a CFD. It's that any large-scale new construction in San Marcos should prompt the same question you'd ask about a resale in Santa Fe Hills or San Elijo Hills: what special tax district is this parcel in, and what does it fund?
That question matters more now than it did a couple of years ago. As of late May 2026, the median sale price across the 92078 zip code, which covers San Elijo Hills and much of central San Marcos, sat at $945,000, with homes typically selling for close to 98.6 percent of asking price. That's a market where sellers still have some leverage, but buyers are running tighter numbers than they were during the peak bidding-war years. In that kind of math, an extra $200 or $300 a month in special taxes isn't a rounding error. It can be the difference between qualifying for a home and needing to look at a lower price point.
What to Check Before You Compare Two Listings
- Pull the current property tax bill by parcel number through the San Diego County Assessor's Mello-Roos lookup process rather than relying on what's typed into the MLS field.
- Ask for the Notice of Special Tax. California law requires sellers to provide it within 14 days of opening escrow, and it should state the current amount, the maximum allowed, and how it can increase.
- Find out whether the bill is a facilities tax with an expiration date, a services tax that runs indefinitely, or both, and how many years remain on each.
- Confirm with your lender how the special tax is being escrowed and counted in your debt-to-income calculation, since it affects how much home you can qualify for, not just your monthly cash flow.
- If you're comparing a resale against new construction, ask the builder or listing agent directly whether the parcel sits inside an active CFD and request the Rate and Method of Apportionment document that explains how the tax is calculated and capped.
FAQ
Does Mello-Roos ever go away? The bond-funded facilities portion can, once the underlying bonds are paid off. Santa Fe Hills' CFD 88-01 shows this directly, with one improvement area's facilities tax expiring in 2019. A services tax funding ongoing operations like police and fire protection is typically structured to continue indefinitely.
Is Mello-Roos the same as HOA dues? No. Mello-Roos is a public tax tied to the parcel and collected with your county property tax bill. HOA dues are a private charge from a homeowners association for community amenities and upkeep. Many San Marcos properties carry both, and they show up as separate obligations.
Can I find the exact amount before writing an offer? Yes. The county's property tax records are searchable by parcel number, and a preliminary title report during escrow will list any recorded special tax liens. Doing this before you fall for a specific house saves a renegotiation later.
Is Mello-Roos tax-deductible? Treatment varies by CFD and by what portion of the tax funds ongoing services versus new construction, and the rules changed with 2026's higher federal SALT cap. This is a question for a tax professional who can review the specific CFD documents, not something to assume either way from a blog post.
If you're weighing a San Marcos resale against a newer build, or trying to figure out why two similarly priced homes are quoting different payments, that's exactly the kind of parcel-level digging worth doing before you write an offer. Aaron Castagna has spent more than two decades working San Diego County transactions where the details buyers don't see on a listing page end up mattering most. Let's Connect.
