Marin Mortgage Calculator
Estimate your monthly payment, then get pre-approved the right way
Last updated September 2026 · By Melissa DiVita, REALTOR®, Compass · DRE #01387955 · Marin native, in real estate since 2003
Use this calculator to estimate what a Marin home would cost each month, including property tax and insurance, which city buyers often underestimate. Worried about the payment at today’s rates? See how a seller-paid 2-1 buydown can lower it for the first two years. Then read on for how to get pre-approved so you can move quickly when the right house comes along.
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Estimate only, for illustration. Rates, taxes and insurance vary. Marin property tax rates are roughly 1.1–1.25% of purchase price depending on the town, plus parcel taxes. The 2026 conforming loan limit for Marin County is shown as a general guide; confirm with your lender.
What to know about financing in Marin
- Many Marin homes need a jumbo loan. Marin’s 2026 conforming loan limit is $1,249,125, so with 20% down, homes above about $1.56 million usually exceed it, which covers much of southern Marin. In Novato, Fairfax and parts of San Rafael, many buyers can stay under the limit. Jumbo loans often require larger down payments and more reserves.
- Property taxes are based on your purchase price, roughly 1.1% to 1.25% depending on the town, plus local parcel taxes. Town guides have details.
- Insurance can be a bigger line item than expected, especially near open space or the Bay. Here’s my insurance guide.
- Equity compensation (RSUs, tender offers, pre-IPO stock) can be used, but it underwrites differently. Plan early.
How to get pre-approved
- Talk to a lender or mortgage broker early, ideally a month or more before you start touring seriously.
- Gather documents: two years of tax returns and W-2s or 1099s, recent pay stubs, two to three months of bank and brokerage statements, and details on any RSUs or stock.
- Get a full pre-approval, not a pre-qualification. In competitive Marin markets, a fully underwritten pre-approval makes your offer stronger.
- Plan your down payment and reserves. If you’re selling another home, ask about bridge financing.
- Lock in strategy, not just a rate. Ask about rate locks, float-down options and timing with your escrow.
A mortgage broker in the family
My husband Michael DiVita is a mortgage broker and owner of DiVita Home Finance, licensed in California since 2007 with access to more than 40 wholesale lenders. That includes jumbo, bank-statement and other non-traditional programs that help self-employed and equity-compensated buyers. Learn more at mycahomeloan.com.
Disclosure: Michael DiVita is my husband. You are free to choose any lender; using DiVita Home Finance is never required, and I receive no referral fee. This calculator provides estimates only and is not a loan offer.
Frequently asked questions
What is a jumbo loan?
A jumbo loan is a mortgage above the conforming loan limit set for the county. Because most Marin homes cost more than that limit, many Marin buyers use jumbo loans, which often require larger down payments and more cash reserves.
What is the property tax rate in Marin County?
Base rates are roughly 1.1% to 1.25% of the purchase price depending on the town and district, plus parcel taxes such as the Measure C wildfire tax in participating areas.
How long does it take to get pre-approved?
Often a few days once your documents are in, longer if you have complex income like RSUs, self-employment or pre-IPO stock.
Can I use RSUs or stock for a down payment?
Yes, with planning. Vested shares can be sold, and some lenders consider stock income. Talk to your lender, CPA and financial advisor about timing and taxes.
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Ready to start looking?
Send me a note through my contact form. I’ll help you line up financing and a search plan together.