Buying a second home in California means clearing a tougher mortgage bar than you did on your primary residence, planning around Proposition 13 reassessment and a supplemental tax bill the county sends straight to you, lining up insurance in a market that has pulled back from wildfire and coastal zones, and checking local rental and HOA rules before you make an offer. Most lenders want at least 10% down and a debt-to-income ratio no higher than 45% to 50%.1Fannie Mae. Selling Guide B3-6-02, Debt-to-Income Ratios The rest of the process is standard California escrow, with a few state-specific costs stacked on top.
Qualifying for the Mortgage
Second-home loans carry stricter terms than primary-residence mortgages. Your debt-to-income ratio, which measures all monthly debt payments (including both mortgages) against gross monthly income, is the first thing a lender looks at. Fannie Mae caps manually underwritten loans at 36% DTI, stretching to 45% for borrowers with strong credit and reserves. Loans run through Fannie Mae’s Desktop Underwriter can go up to 50%.1Fannie Mae. Selling Guide B3-6-02, Debt-to-Income Ratios
The minimum down payment is 10%, based on Fannie Mae’s 90% loan-to-value ceiling for one-unit second-home purchases.2Fannie Mae. Eligibility Matrix Put down less than 20% and you’ll pay private mortgage insurance each month until you build 20% equity.3Freddie Mac. Down Payments and PMI Twenty percent or more avoids PMI and usually earns a lower rate.
Expect to hand over at least two years of federal tax returns, recent W-2s from every employer, and at least two months of bank and investment statements.4Fannie Mae. Selling Guide B3-6-02, Debt-to-Income Ratios – Section: Chapter B3-3, Income Assessment If you want potential rental income to count toward qualifying, the lender may order an appraisal that includes a comparable rent schedule.
Fannie Mae also distinguishes a “second home” from an “investment property.” A second home must be a one-unit dwelling suitable for year-round use, and you have to occupy it for some portion of the year.5Fannie Mae. Occupancy Types If the lender concludes the property is really an investment, the down payment requirement and interest rate both go up.
California Property Taxes on a Second Home
Reassessment at Purchase
California caps the base property tax rate at 1% of assessed value under Proposition 13, with annual increases limited to 2%.6Justia. California Constitution Article XIII A Section 1 – Tax Limitation When you buy, the county assessor sets a new base year value at your purchase price. Your first tax bill reflects today’s market, not the low assessment a long-term neighbor might be paying.
Second homes don’t qualify for the $7,000 homeowner’s exemption reserved for owner-occupied primary residences.7California State Board of Equalization. Homeowners Exemption The dollar savings are small (roughly $70 a year), but it’s a reminder that California’s property tax breaks don’t extend to vacation properties.
The Supplemental Tax Bill
After closing, the assessor recalculates value and sends a prorated supplemental bill covering the difference between the seller’s old assessed value and your purchase price for the rest of the fiscal year (July 1 to June 30). Close between January and May and you may get two supplemental bills, one for the current fiscal year and one for the year ahead.8California State Board of Equalization. Supplemental Assessment – Property Tax These bills come to you directly, not to your lender’s escrow impound account. Set the money aside separately.
Mello-Roos
Newer developments and master-planned communities often carry Mello-Roos fees, special taxes imposed by a Community Facilities District to fund roads, schools, and utilities. They aren’t tied to assessed value, they can add hundreds or thousands of dollars a year, and they can run 20 to 40 years. The obligation transfers with ownership, so read the property’s current tax bill before you make an offer.
Proposition 19 (and Its Limit)
Proposition 19 lets homeowners who are 55 or older, severely and permanently disabled, or displaced by a wildfire or natural disaster transfer their existing primary residence’s tax base to a replacement primary residence anywhere in California, up to three times. If the replacement costs the same or less, the old base transfers in full; if it costs more, only the difference is added.9California State Board of Equalization. Proposition 19 The claim must be filed within three years of purchase or completion of construction.
The boundary matters here: Proposition 19 applies only to a replacement primary residence. It won’t reduce taxes on a vacation home or rental. If your plan is to buy a California property now and convert it to a primary residence later, the base transfer becomes available only after you actually move in and sell the original.
Federal Tax Treatment
Mortgage Interest
Interest on a qualified second home is deductible the same way as on your primary residence if you itemize. For mortgages taken out after December 15, 2017, the combined acquisition debt limit across both homes is $750,000 ($375,000 if married filing separately). Older mortgages sit under the earlier $1,000,000 limit.10Internal Revenue Service. Publication 936 (2025), Home Mortgage Interest Deduction You don’t have to use the home a minimum number of days to claim the deduction if you never rent it out.
The SALT Cap
California property taxes and state income taxes both count against the federal state and local tax (SALT) deduction. For tax year 2026, the SALT cap is $40,400, up from $10,000 in prior years, and it begins to phase down once modified adjusted gross income exceeds $505,000, with a $10,000 floor.11Office of the Law Revision Counsel. 26 U.S. Code 164 – Taxes Two California properties can push you past the cap quickly, and anything over it gives you no federal benefit.
The 14-Day Rental Rule
Rent the home fewer than 15 days in a year and you don’t report the income at all. Cross that line and the IRS classifies the property based on how heavily you use it personally. A home stays a “residence” for tax purposes if personal use exceeds the greater of 14 days or 10% of the days rented; fall below that and it’s treated as a rental property, which changes both what you can deduct and how you file.12Internal Revenue Service. Publication 527 (2025), Residential Rental Property
Insurance in Wildfire and Coastal Areas
Any financed property has to be insured, and coverage has become genuinely hard to secure in fire-prone and coastal parts of California. Private carriers have pulled back from high-risk zones. When the private market refuses, the California FAIR Plan is the state’s insurer of last resort, providing basic fire and smoke damage coverage.13CA Department of Insurance. California FAIR Plan The FAIR Plan doesn’t cover liability, theft, or water damage, so buyers typically pair it with a separate “Difference in Conditions” policy.
FAIR Plan premiums usually run higher than standard policies, and the number depends on location, construction, and proximity to wildfire fuel. Discounts are available for hardening measures like fire-resistant roofing and defensible space. Get quotes early. Discovering that annual insurance runs several thousand more than expected can change whether the purchase makes sense at all.
Short-Term Rental, Coastal, and HOA Restrictions
If renting the property is part of the plan, check the local ordinance before you buy. California cities and counties commonly require a permit for stays under 30 days, and the rules vary: some cap the number of permits, require the owner on-site during the stay, or limit the total rental nights per year. Operating without a valid permit can cost up to $1,000 per day in some areas.14Treasurer and Tax Collector. Short-Term Rentals General Information
Properties in the coastal zone have another layer. The California Coastal Commission regulates development along roughly 1,100 miles of coastline.15California Coastal Commission. The California Coastal Commissions Legal Authority to Address Climate Change Renovations, additions, or footprint changes within the coastal zone may require a Coastal Development Permit, which can bring environmental review and public hearings.16California Legislative Information. California Public Resources Code PRC 30604 Call the local planning department before making an offer.
Homeowners associations run independent of city rules. A property can sit in a city that permits short-term rentals while its HOA bans them outright. Before you commit to an HOA community, request and read:
- CC&Rs and bylaws, focusing on rental restrictions, occupancy rules, and any provisions the board can amend without owner approval.
- The reserve study, which compares HOA savings to projected repair costs on roofs, pools, roads, and elevators. An underfunded reserve usually means a special assessment is coming.
- Monthly dues and the history of increases. HOA fees at resort communities can be steep, and they’re not tax-deductible on a personal-use property.
- Recent meeting minutes, which surface pending litigation, planned assessments, and internal disputes that marketing materials leave out.
Making the Purchase and Closing
Offer and Escrow
The offer goes in on a California Residential Purchase Agreement, the standard statewide contract, which sets price, deposit, contingencies, and closing date.17CALIFORNIA ASSOCIATION OF REALTORS®. California Residential Purchase Agreement and Joint Escrow Instructions Once the seller accepts, a neutral escrow company opens an account and holds funds and documents until every contract condition is met.
Inspections and Title
The inspection contingency, usually 7 to 10 days from acceptance, is when you hire an inspector and either negotiate repairs, credits, or walk away. For rural or remote California properties, add specialized checks for septic, wells, and pests.
You’ll also receive a Preliminary Title Report showing liens, easements, and encumbrances.17CALIFORNIA ASSOCIATION OF REALTORS®. California Residential Purchase Agreement and Joint Escrow Instructions An owner’s title insurance policy covers defects the report might miss and is a one-time cost at closing.
Signing and Recording
Near closing you’ll sign the final loan documents and grant deed with the escrow officer or a mobile notary, then wire the remaining down payment and closing costs. Once the funds land and conditions clear, the grant deed goes to the County Recorder’s Office, which creates the public record and vests title in your name.18California Department of Real Estate. Principal Instruments of Transfer
Closing Costs to Plan For
- Escrow fees, usually split with the seller and running several hundred to a few thousand dollars depending on price.
- Owner’s title insurance, priced by purchase amount.
- California documentary transfer tax of $1.10 per $1,000 of the sale price, with some cities adding their own.
- Prorated property taxes reimbursing the seller for any period after closing they’ve already paid.
- Loan origination fees, typically 0.5% to 1% of the loan.
- The supplemental tax bill, which arrives after closing and comes to you rather than through your lender’s impound account.8California State Board of Equalization. Supplemental Assessment – Property Tax
Buying Through an LLC
Some buyers hold a second home in a limited liability company to separate the property’s legal exposure from personal assets and to keep their name off the public deed. A properly maintained LLC can shield other assets if someone is injured on the property.
The catch is financing. Most residential lenders won’t write a standard mortgage to an LLC; they need a personal borrower. Buyers who want the structure usually close in their own name and transfer the property into the LLC later, which can trigger a due-on-sale clause in the loan. Some lenders offer commercial or portfolio loans directly to LLCs, but those carry higher rates, larger down payments, and shorter terms. Talk to both a real estate attorney and your lender before choosing this route.