Mello-Roos in Santa Clarita, explained by a local Realtor

Mello-Roos is one of the first questions I hear when I tour newer neighborhoods in Valencia, Stevenson Ranch and the hills above Copper Hill, and it is also one of the most misunderstood. A buyer recently put it perfectly in a local Facebook group: they had owned in Santa Clarita for years, were buying again, and had been told how Mello-Roos works “ten different ways.” This guide is my attempt at the one clear version, using the actual district documents and the County’s current numbers.

I will cover what Mello-Roos is, how it shows up on your bill, which parts of the valley have it, how to look it up for a specific address, how long it lasts, whether it can go up, whether you can pay it off, how it is treated for taxes and how it compares with HOA dues. Because most of my work is in the estate market, I will also explain why Mello-Roos affects a luxury purchase differently than people expect.

What is Mello-Roos?

Mello-Roos is the common name for the Mello-Roos Community Facilities Act of 1982, named for State Senator Henry Mello and Assemblyman Mike Roos. After Proposition 13 limited the base property tax to 1 percent of a home’s assessed value in 1978, local agencies needed another way to pay for the roads, schools, parks, water lines and fire stations that new communities require. The Act lets a city, county, school district or water agency form a Community Facilities District, or CFD, approve a special tax inside that district, and sell bonds that the special tax repays over time.

A CFD needs a two-thirds vote to be approved. In a new development, there are often fewer than twelve registered voters living on the land when the district is formed, and in that case the landowners vote instead, weighted by acreage. That is how most master-planned districts are created. In Stevenson Ranch, for example, the bond documents for one of the original improvement areas record that in June 1989 the developer, as “the landowner and sole qualified elector,” approved up to $42 million in bonds. The homeowners who live there now never voted on it, which is normal for this kind of district and is exactly why the disclosure rules below matter so much.

There are two kinds of special taxes you may see. A facilities tax repays bonds that built something, such as a school or a road. A services tax pays for ongoing maintenance, such as landscaping, parks or public safety. Many newer communities have both.

How is Mello-Roos different from regular property tax?

A Los Angeles County property tax bill has three main parts. The general tax levy is the 1 percent base set by Proposition 13. Voter-approved debt adds small percentages for things like school and water bonds, which is why most Santa Clarita homes pay a little more than 1 percent in total. Then there are direct assessments, which are fixed charges per parcel, and this is where Mello-Roos appears, labeled with the district name and a phone number for the agency that levies it.

The most important difference is that Mello-Roos is not based on your home’s value. Each district has a formula, called the Rate and Method of Apportionment, that sets the tax by land use, home size and sometimes lot size. That has two practical effects. First, the special tax does not reset when a home sells, the way the 1 percent base resets to your purchase price. Second, it does not scale with price. Two homes of the same size in the same district pay the same special tax whether one sells for $900,000 or $1.4 million.

Here is what that looks like on a real estimate. In an August 2024 bond document, the County projected the 2024-25 tax bill for a 2,550 square foot home in Valencia by FivePoint with a base price of $913,857:

• 1 percent general tax: $9,138.57
• General tax including voter-approved debt, at about 1.17 percent: $10,677.26
• Facilities special tax: $3,973.29
• Services special tax: $646.37
• Total of all special assessments and charges: $5,645.41
• Projected total: $16,322.66, or about 1.79 percent of the price

Mello-Roos is collected on the same bill and on the same schedule as the rest of your property tax, with installments due November 1 and February 1, and it carries the same penalties if it goes unpaid.

Which Santa Clarita neighborhoods have Mello-Roos, and which estate areas do not?

District boundaries follow the land that was being developed when each district formed, not the neighborhood names buyers use, so the parcel is always the final answer. With that caveat, here is the picture from the County’s own records as of the 2026-27 levy:

Other newer communities, including Tesoro del Valle, Tesoro Highlands, Skyline Ranch and parts of Plum Canyon, are widely reported to carry Mello-Roos as well. I have not seen published district documents I would quote for their amounts, so for those I pull the figures from the specific tax bill. Interestingly, at least one 2026 Tesoro Highlands listing advertised no Mello-Roos, which is a good reminder that individual parcels can differ from what a neighborhood is known for.

On the estate side, the areas where I do most of my work are commonly marketed without Mello-Roos. Westridge listings consistently say “No Mello-Roos,” including a gated home on Smoketree Lane that sold in June 2026. Custom properties in Sand Canyon, such as homes in the Hope Ranch enclave, and canyon homes in Placerita Canyon are generally marketed the same way, largely because they were built before or outside the master-planned districts. Southern Oaks in Stevenson Ranch is a good example of why we verify: some older reports mention a small district charge there, which may have been part of the Stevenson Ranch district that has now ended. The current bill tells us for certain.

For neighborhood-by-neighborhood details, see my guides to Stevenson Ranch, Westridge, Valencia and Sand Canyon.

How do I look up Mello-Roos for a specific address?

There is no single “Mello-Roos lookup by address” tool for Los Angeles County, but there is a reliable process, and it is the one I follow for every client.

1. Find the parcel number. Enter the address in the Los Angeles County Assessor’s portal to get the 10-digit Assessor’s Identification Number.
2. Read the current tax bill. Ask the listing agent or escrow for the seller’s current secured property tax bill and look under direct assessments for any line naming a CFD, such as “CFD NO. 2021-01” or a school district CFD. Each line lists a phone number for the agency.
3. Identify the agency. If a line is cryptic, the County Auditor-Controller’s direct assessment contact list lets you search by the bill description and tells you who to call.
4. Request the Notice of Special Tax. California Government Code 53340.2 requires the agency to provide this notice within five working days for a fee of no more than $15. It shows the maximum tax for the year, how much it can increase, the last year a facilities tax can be levied, and whether a services tax may continue indefinitely.
5. Check the public records. The County Board of Supervisors publishes a levy letter every year with the per-parcel range for each County district, and the County Treasurer posts the bond documents. The State Treasurer’s DebtWatch site shows how much bond debt each district still owes.

Sellers have a duty here too. California Civil Code 1102.6b requires a seller to make a good-faith effort to get the Notice of Special Tax and deliver it to the buyer. When you buy a new home directly from a builder, Government Code 53341.5 requires the builder to give you the notice before you sign, and you can cancel within three days of receiving it in person, or five days if it was mailed. I ask for the notice early in escrow so the number is settled before contingencies are removed.

How long does Mello-Roos last?

For a facilities tax on a home, California law requires the district’s formula to set a final tax year, after which the tax stops. The Los Angeles County Auditor-Controller notes that these bonds are “normally issued for 30 years.” A services tax is different. The state’s own notice form says a services tax “may be levied until the ____ tax year (or forever, as applicable),” so some services charges have no end date.

Santa Clarita has real proof that facilities taxes end. Stevenson Ranch’s original district was formed in 1989 with three improvement areas. Area A’s final bonds matured in September 2014, and it no longer appears on the County’s levy list. Area B’s final bonds matured in September 2026, and it no longer appears on the 2025-26 or 2026-27 levy lists either. Area C’s bonds mature in September 2032, and its formula says the tax can never be levied more than four years after the final maturity. In Valencia by FivePoint, the facilities tax runs until the bonds mature or 40 years after the tax begins, whichever comes first, with hard stops in fiscal years 2062-63 through 2066-67 depending on the area.

Two myths come up constantly. The first is that Mello-Roos lasts a set number of years from the date you bought. It does not. The end year belongs to the district, not the owner, so a home with five years left still has five years left when you buy it. The second is that Mello-Roos “auto-renews” when it expires. It does not. Government Code 53338 requires a two-thirds vote to levy a new special tax or change an existing one.

Can Mello-Roos go up?

It depends on when the district was formed. For residential facilities taxes in newer districts, Government Code 53321 limits increases to no more than 2 percent a year, and also caps any increase caused by other owners’ late payments at 10 percent. Valencia by FivePoint uses the full 2 percent, with its formula raising the assigned rates every July 1. Stevenson Ranch’s 1989 district predates those rules and has fixed maximums with no annual escalator.

The yearly levy can also be lower than the maximum, and it can go down. In Stevenson Ranch’s Area C, the top levy fell from about $1,876 in 2024-25 to about $1,795 in 2025-26 and about $1,768 in 2026-27. In one FivePoint improvement area, the top levy fell from about $5,697 in 2025-26 to about $5,192 in 2026-27. Los Angeles County’s 2023 policy for new districts also aims to keep a home’s total property tax, including any special taxes, at no more than 2 percent of its projected value when a district is formed.

Can you pay off Mello-Roos early?

Sometimes, and the district’s formula decides. Valencia by FivePoint’s facilities tax allows full or partial prepayment as long as no taxes are delinquent. The process starts with a written notice to the district administrator, who sends a deposit amount within five business days and the full prepayment amount within fifteen days of the deposit, and the payment has to be made at least sixty days before the bond redemption date it will fund. Once it is paid, the County records a notice releasing the lien. Older districts may not offer prepayment at all, and I did not find a prepayment provision in the formulas for Stevenson Ranch’s original district. Prepaying a facilities tax also does not remove a separate services tax.

Whether paying it off makes sense depends on how long you plan to own the home, the payoff amount, the remaining term and what that cash could do elsewhere. Buyers generally do not reimburse a payoff dollar for dollar when you sell, although a home without Mello-Roos can be easier to market. This is a good conversation to have with your CPA or financial advisor, and I am glad to pull the documents you will need for it.

Is Mello-Roos tax deductible?

I am not a CPA, so please treat this as background for a conversation with your tax professional. IRS Publication 530 explains that deductible real estate taxes must be charged uniformly at a like rate on all property in the community for general public purposes. It says you cannot deduct amounts paid for local benefits that tend to increase your property’s value, such as streets, sidewalks and water or sewer systems, and that those amounts are added to your home’s cost basis instead. The exception is the portion of a charge used for maintenance, repair or interest, which can be deductible if you can show how much it is. California follows the federal treatment.

For luxury buyers, the limit on the state and local tax deduction matters too. For 2025, the IRS raised that limit to $40,000, reduced for incomes above $500,000. Between those rules, the deduction question is usually smaller than people hope, and it is worth confirming with your CPA before you count on it.

What is the difference between Mello-Roos and HOA dues?

Mello-Roos is a public tax levied by a government agency and collected on your property tax bill. HOA dues are private charges set by a homeowners association under its governing documents. Mello-Roos facilities taxes in newer districts can rise by up to 2 percent a year and have a final year. An HOA board can raise regular dues by up to 20 percent a year without a vote of the members under Civil Code 5605, and dues continue for as long as the association exists. Neither is generally deductible for a personal residence.

Many master-planned communities in Santa Clarita have both, so I always show clients the combined monthly cost of the mortgage, property tax, Mello-Roos, HOA and insurance side by side. You can read more about HOAs in my guide to HOA vs no HOA in Santa Clarita.

How should Mello-Roos shape your offer or your listing?

Because Mello-Roos is set by home size rather than price, it takes up a smaller share of a higher-priced home. In Valencia by FivePoint’s newest improvement area, the 2026-27 assigned facilities tax for a detached home of 4,201 square feet or more is $6,333 a year regardless of the sale price. On a $1 million home that is about 0.6 percent of the price, and on a $2 million home it is about 0.3 percent. It is a real cost either way, and it is easier to weigh once you see it next to the rest of the monthly budget.

When I represent buyers, I ask for the Notice of Special Tax and the current bill early in escrow, confirm the end year and any services tax, and compare the total monthly cost with similar homes in areas without Mello-Roos. When I represent sellers, I pull the notice before we go live, show buyers the end year in plain terms, and point out when a district has already ended, as it has for much of Stevenson Ranch. Clear numbers up front make for a smoother escrow.

The short version

Mello-Roos is a special tax on newer communities, collected on your property tax bill and set by home size rather than price. It stays with the home when it sells, facilities taxes have an end date, services taxes may not, and the current bill plus the Notice of Special Tax will tell you exactly what a specific home carries. If you are weighing a home with Mello-Roos against one without it, I would be glad to walk through the numbers with you. Reach out here or call me directly.

Where to check these details yourself

• California Government Code 53340.2, Notice of Special Tax
• California Government Code 53321, limits on increases and final tax year
• California Government Code 53338, two-thirds vote requirement
• California Government Code 53341.5, new home disclosure and cancellation
• California Civil Code 1102.6b, resale disclosure
• Los Angeles County Auditor-Controller, what is a Mello-Roos assessment
• Los Angeles County direct assessment contact list
• Los Angeles County Treasurer and Tax Collector, secured property tax FAQ
• Los Angeles County Assessor portal
• County 2026-27 special tax levy letter
• State Treasurer DebtWatch
• IRS Publication 530