Two open houses, same Saturday, both priced within $30,000 of each other and both close to 2,700 square feet. One sits behind a gated entry in La Floresta, walking distance from the Whole Foods and the shops along Birch Street. The other sits in Eagle Hills, an older tract off Lambert and Birch known more for its holiday light displays than granite countertops. A buyer tours both, likes both, and assumes the number on the sign is the number that matters.

It isn't. One of these homes carries a second, permanent bill that the other one doesn't, and it won't show up until the preliminary title report lands in escrow.

The Line Item That Only Shows Up at Underwriting

That second bill is a Community Facilities District special tax, better known by its shorthand, Mello-Roos. California's base property tax is capped under Proposition 13 at roughly 1% of assessed value, with modest annual increases. That cap left cities with a funding gap when they needed to build roads, parks, and school capacity for brand-new neighborhoods, so the 1982 Mello-Roos Act let local agencies form CFDs, issue bonds against future infrastructure, and repay those bonds through a special tax billed alongside the regular property tax.

The tax shows up as its own line on the annual bill, labeled with the CFD's actual name per the Orange County Treasurer-Tax Collector, and it counts against a buyer's debt-to-income ratio the same way a mortgage payment does. It also doesn't shrink if the home appreciates. A CFD assessment is set by formula, tied to the parcel, not to market value, so a home that doubles in price still carries roughly the same special tax it started with.

North Orange County has historically been described as light on this kind of assessment. Effective tax rates in non-CFD ZIP codes typically run about 1.1% to 1.3% of purchase price, compared with 1.5% to 1.7% in CFD-heavy tracts, according to a 2026 lending industry guide to Mello-Roos costs. Brea has long been grouped with Fullerton, Orange, Yorba Linda, and Anaheim Hills as a city where most neighborhoods fall on the low end of that range.

That reputation is true for most of Brea. It just isn't true everywhere in Brea, and the exceptions are exactly the neighborhoods a lot of comparison shoppers are touring right now.

Why the Hillside Master Plans Broke the Pattern

Eagle Hills, the tract with the holiday lights, was built between 1978 and 1983, largely before the Mello-Roos Act even existed. There's no HOA there and no CFD, because the infrastructure was already paid for through conventional means by the time the law that would have required it was even on the books.

Blackstone and La Floresta are a different era entirely. Blackstone went up mostly between 2010 and 2016 on hillside land that needed new roads, drainage, and parks built from scratch, the exact scenario the Mello-Roos Act was written for. La Floresta followed a similar pattern, adding a walkable village core near Whole Foods, a network of trails, and several age-qualified and family communities, several of them financed in part through CFD bonds tied to each phase. Nearby, a separate newer townhome community called Portarosa went in off Kraemer Boulevard near Birch Hills Golf Course under the same financing logic.

What the Bill Actually Ran, Phase by Phase

Builders in these communities have historically published their CFD figures at time of sale. The numbers below reflect what was disclosed when each phase was built. State law allows CFD assessments to climb up to 2% a year, so a parcel's current bill can run higher than its original published figure, and the only way to know the exact number on a specific address is to pull the parcel's actual tax bill.

Portarosa is a useful example because it also came with a published HOA of $350 a month at buildout. Add the CFD's roughly $63 a month to that dues figure and a buyer in that specific community was budgeting for over $400 a month in recurring costs before the mortgage payment even entered the math, on top of a base tax rate the builder listed at around 1.10%.

What the Other Column Looks Like

Walk two miles over to Eagle Hills and that column disappears. The 192 homes there, built by Walter Gayner in the late 1970s and early 80s, carry no HOA and no CFD. As of February 2026, entry-level homes in that tract, the ones still wearing their original 1980s kitchens, were listing in the $1.3 million to $1.4 million range. Buyers there aren't just paying for square footage and three-car garages, though those lots do tend to be larger than anything built in Brea since. They're paying for the absence of a recurring bill that never goes away on its own.

Olinda Ranch, built out between 2001 and 2006, sits somewhere in between. One recent Olinda Ranch listing carried an HOA of $134 a month, a modest figure compared with the newer hillside master plans, though fees vary by home and should always be confirmed for the specific address. Downtown Brea's attached communities follow their own pattern too: some condo listings there advertise monthly dues that cover water and trash with no separate CFD line on the bill, though again, this varies unit to unit. The only way to confirm whether a specific address carries a CFD is to request the preliminary title report and check the tax bill against the parcel's Assessor's Parcel Number.

Why the Math Changes When Appreciation Slows

For most of the last decade, an extra $100 to $200 a month in CFD and HOA costs was easy to ignore, because home values were climbing fast enough to bury it. That cushion has gotten thinner in the resale segment of Brea's market this year.

Over the three months ending May 2026, Brea's citywide median sale price rose 10.6% year over year to about $1.2 million, and homes sold in an average of 29 days, up from 21 days the year before, according to Redfin. In the Brea-Olinda neighborhood specifically, the older, more established submarket that includes tracts like Eagle Hills, the median price per square foot actually fell 4.6% year over year to $535. Days on market lengthened further there too, with Redfin listing an average of 31 days and Orchard's tracking showing median days on market climbing to 41 from 22 the year before over the same trailing window.

Two data providers, two slightly different numbers, but the same direction: the resale side of Brea's market is taking longer to move than it was twelve months ago, even as the citywide median keeps climbing on the strength of newer, higher-priced inventory.

That matters for the CFD math specifically. When appreciation is fast, an extra $150 a month gets absorbed into equity gains that a buyer never has to think about. When appreciation slows and homes sit longer, that same $150 a month stops being invisible. It becomes a real number a buyer is paying every month for as long as they own the home, and often for a lot longer than that. CFD bonds in Orange County commonly run 25 to 40 years from the date they were issued. A buyer purchasing today in a community built out in the early 2010s could still be paying that special tax well into the 2040s, a timeline that outlasts most people's ownership of any single home.

Before You Write an Offer

None of this means new construction is a bad decision. It means the sticker price on two comparable homes in Brea can hide two very different monthly totals, and the only way to see the real number is to ask for it directly. Request the preliminary title report early. Look for the CFD's actual name on the tax bill rather than a generic "special assessment" line. If the number matters to your monthly budget, call the issuing agency listed on the bill or check the parcel directly through the county.

Does every new home in Brea carry Mello-Roos? No. It depends on when the specific CFD was formed and what infrastructure it financed. Some newer product built inside areas that already had roads and utilities in place may carry little or none. Always verify the specific parcel.

Does the special tax ever go away? Yes, once the underlying bond is paid off. Terms commonly run 25 to 40 years from issuance, and the payoff date doesn't reset when a home changes hands.

Is the amount the same for every home in a development? Not always. CFDs can apportion the tax by square footage, lot size, or number of bedrooms, so two floor plans in the same community can carry different figures.

Comparing two listings in Brea by price per square foot alone tells you what the house is worth today. Comparing what each one will actually cost to hold for the next decade tells you something the sign never will. If you're weighing a newer community against an established one and want the real monthly number laid out side by side, The Abeelen Group can pull the specific parcel history and walk through it with you. Schedule your free home valuation and we'll start with the numbers that don't make it onto the flyer.