Every figure below is from a primary source (the county, the school district, or the city), with a fiscal-year stamp and a link. Mello-Roos is set per parcel under each district's Rate and Method, usually by the home's square footage, so treat these as the sourced ranges, not a single flat number for your exact home. Start with What is Mello-Roos if you are new, and see the districts on the Santa Clarita Mello-Roos map.

Stevenson Ranch — LA County CFD No. 3

Stevenson Ranch is covered by Los Angeles County's Community Facilities District No. 3, collected on your county property tax bill. In Improvement Area A, the Rate and Method sets a maximum annual special tax for a single-family home of about $1,475 to $2,841 per year depending on home size (these are the RMA maximums; the amount actually billed is often lower because the county applies a percentage of the maximum). The exact figure is per parcel. Source: the County's Improvement Area A official statement (Series 2011A). Improvement Area C, also in Stevenson Ranch, runs on bonds that finish in 2032 (see the expiration guide).

Plum Canyon and Golden Valley area — Hart CFD No. 2005-1

Newer Hart Union High School District tracts south of Golden Valley Road and Plum Canyon Road carry a school-facilities Mello-Roos, CFD No. 2005-1. The district's own annual report sets the assigned single-family special tax, as of fiscal year 2021/22, at about $2,369 per year for smaller homes (1,750 sq ft or less) up to $4,257 for the largest (over 2,900 sq ft), by square-footage class. It rises 2% per year, so the current-year figure is somewhat higher, confirm the exact amount. This district's tax runs through fiscal year 2050-51. Administrator: KeyAnalytics, (877) 575-0265.

Newer Valencia (FivePoint / Newhall Ranch era)

The newest Valencia homes (the FivePoint / former Newhall Ranch area) sit in a separate, newer county district, CFD No. 2021-01 (Valencia-Facilities), which issued bonds in 2022. The per-home special tax for this district is not yet published in a primary document we can cite, so we will not print a number we cannot stand behind. If you are buying here, confirm the amount on the home's tax bill or with the LA County Auditor-Controller at (213) 974-8368.

Other tracts (West Creek, Westridge, Tesoro del Valle, Bridgeport, and more)

Several other Santa Clarita communities have school-district or developer CFDs (for example, Saugus Union School District's CFD No. 2006-1 covers the West Creek Village area). The districts exist, but the exact per-home special tax for these is confirmed on the parcel's tax bill or with the administering agency, not estimated. We are sourcing each of these to a primary document and will add the verified figure here as it is confirmed rather than copy a number from another site.

How to get your exact number

Read the home's property tax bill (the Mello-Roos shows as a direct-assessment line with the agency's phone), or call the administrator: Hart school CFDs, KeyAnalytics (877) 575-0265; county CFDs, LA County Auditor-Controller (213) 974-8368; city CFDs, City of Santa Clarita (661) 259-2489. Full steps: the Mello-Roos guide. Selling one of these homes? Run your seller numbers.

FAQ

Which Santa Clarita communities have the highest Mello-Roos?

Newer master-planned tracts carry the most. Verified examples include Stevenson Ranch (county CFD No. 3) and the Plum Canyon / Golden Valley Hart district (CFD No. 2005-1, about $2,369 to $4,257 per home as of FY2021/22). Older neighborhoods often carry little or none.

Does Stevenson Ranch have Mello-Roos?

Yes. Stevenson Ranch is in Los Angeles County CFD No. 3, with a single-family maximum special tax of roughly $1,475 to $2,841 per year by home size (RMA maximums; actual billed amount is often lower). Confirm the specific parcel.

Why does my neighbor pay a different Mello-Roos?

Because the tax is set per parcel by home size and district. Two homes in the same area can fall in different square-footage classes or different districts.

Connor MacIvor, REALTOR, DRE #01238257, Sync Brokerage. The Sellers Only Agent, Santa Clarita Valley. sellersonlyagent.com

Sources

• LA County CFD No. 3 Improvement Area A Official Statement (Series 2011A) — ttc.lacounty.gov
• LA County CFD No. 3 Improvement Area C Official Statement (Series 2012A) + annual report — ttc.lacounty.gov
• Hart Union HS District CFD No. 2005-1 Annual Special Tax Report (FY ending 6/30/2021)
• LA County Auditor-Controller, Mello-Roos assessment FAQ