Estimate true monthly cost in the Santa Clarita Valley by combining your mortgage payment with property tax, Mello-Roos special assessments, and HOA dues — the four pieces that actually hit your budget each month.
This calculator adds four costs into one realistic monthly figure: mortgage principal & interest, property tax (Los Angeles County base ~1.1% plus any voter-approved add-ons), Mello-Roos special assessments common in newer SCV tracts, and HOA dues. Rates are currently roughly 6.5–7.0%. Current figures are updated quarterly. For today’s numbers, use the live search or contact Brian directly.
What the calculator does
Many SCV buyers underestimate monthly cost because they price only the mortgage. In newer master-planned tracts, Mello-Roos and HOA dues can add hundreds of dollars a month. This tool combines all four so your budget reflects reality.
- Mortgage principal and interest from price, down payment, rate, and term
- Estimated Los Angeles County property tax
- Mello-Roos / CFD special assessment (where applicable)
- Monthly HOA dues
The inputs you provide
None
- Purchase price
- Down payment (dollars or percent)
- Interest rate — currently around 6.5–7.0%
- Loan term (typically 30 years)
- Annual Mello-Roos amount for the tract
- Monthly HOA dues
How property tax is estimated
Los Angeles County property tax starts from a roughly 1.1% base rate under Proposition 13 and adds voter-approved bonds and direct assessments that vary by district. The calculator uses an estimated effective rate; your actual bill comes from the Los Angeles County Assessor and tax collector.
Why Mello-Roos matters in the SCV
Many newer Santa Clarita communities — including parts of FivePoint Valencia and other master plans — carry Mello-Roos (Community Facilities District) assessments that fund schools, roads, and infrastructure. These are layered on top of base property tax and can run from several hundred to a few thousand dollars per year. Always verify the amount and remaining term for the specific tract.
How to read your result
The output is an estimated total monthly housing cost. Compare it to your gross income — many lenders look for housing costs near or under about 28% of gross — and remember insurance is separate (and can be higher in wildfire-exposed areas). Use the figure as a planning starting point, then confirm exact numbers with your lender and the county.
Get an exact, property-specific estimate
Estimators are a starting point, not a quote. For an exact monthly figure on a specific SCV home — including the real Mello-Roos balance and HOA dues for that tract — contact Brian and he will pull the verified numbers.
Brian Cooper serves the Santa Clarita Valley — Valencia, Stevenson Ranch, Saugus, Newhall, Canyon Country, Castaic, Acton and Agua Dulce — across Los Angeles County, plus Simi Valley and the Conejo Valley.
Frequently Asked Questions
Is Mello-Roos included in my mortgage payment?
Sometimes. If your loan is impounded, Mello-Roos is often collected with property tax in your monthly payment; otherwise it is billed separately on your county tax bill. Confirm with your lender and verify the tract amount.
How much can Mello-Roos add per month in the SCV?
It varies widely by tract — from roughly a few hundred to a few thousand dollars per year. Newer master-planned communities tend to carry higher assessments. Always verify the current amount and remaining term for the specific property.
What property tax rate does the calculator use?
It estimates from a roughly 1.1% Los Angeles County base under Proposition 13 plus typical add-ons. Your exact effective rate depends on the district; the Los Angeles County Assessor has the authoritative figure.
What interest rate should I enter?
Use a current quote from your lender. As of 2026, 30-year rates have hovered around 6.5–7.0%, but your rate depends on credit, loan type, and points. Verify before relying on the result.
Does this include homeowners insurance?
No. Insurance is estimated separately and can be elevated in wildfire-exposed parts of the SCV. Get a real quote and add it to the calculator output for a complete monthly picture.
Why doesn’t this page list a specific number?
Housing figures change constantly, and publishing a static number that goes stale would mislead readers. Instead this page explains how each metric is measured and what it means, then points you to the live search or to Brian for the current verified figure.
