Fair Plan increase could squeeze California homebuyers' borrowing power

A 29.1% average California FAIR Plan dwelling-rate increase takes effect Oct. 15, adding pressure to already stretched homebuyers as higher required insurance can lower the mortgage amount borrowers qualify for. CJ Kerls says the impact is especially important in the San Francisco Bay Area and Sonoma County, where property-specific insurance costs can vary widely.

Why it matters: - The California FAIR Plan’s approved average dwelling rate increase of 29.1% starts Oct. 15, 2026, for new and renewing policies. - Higher required insurance payments can reduce a borrower’s qualifying mortgage amount even when income and credit stay the same. - In a market where mortgage rates are near 7%, the insurance change adds another affordability constraint for California buyers.

What happened: - CJ Kerls, Branch Manager and SVP of Mortgage Lending at Rate, said the FAIR Plan increase is becoming a bigger issue for buyers in the San Francisco Bay Area and Sonoma County. - Kerls said lenders qualify borrowers on total monthly housing expense, including principal, interest, property taxes and required homeowners insurance. - The rate increase affects required insurance costs for homebuyers and homeowners using FAIR Plan coverage.

The details: - Borrowers near a debt-to-income limit can see less room for principal and interest when insurance premiums rise. - The exact impact depends on the mortgage rate, loan program, property taxes, other debts and the borrower’s financial profile. - Kerls said the key lending input is the total required monthly insurance premium. - Kerls published an analysis on CJKerls.com examining how higher insurance costs can affect mortgage purchasing power, including an example tied to a Sonoma County home purchase. - For financed purchases, a California FAIR Plan policy alone does not satisfy the full property-insurance requirements in the mortgage transactions Kerls handles. - Borrowers using the FAIR Plan must also secure additional coverage before closing. - That additional coverage can include protection for water damage and liability, which are not included in the FAIR Plan policy. - Kerls said selecting insurance products and coverage levels is the role of a licensed insurance professional. - Kerls said the mortgage side must confirm required underwriting coverage and factor the full premium into qualification.

Between the lines: - Sonoma County homes with similar purchase prices can produce very different insurance premiums, which means the same borrower may qualify for different loan amounts depending on the property. - The move underscores how California housing affordability now depends on more than interest rates alone. - Buyers who wait until escrow to learn the real insurance cost may face a lower loan amount at the last minute.

What's next: - Kerls said buyers should get a property-specific insurance estimate as early as possible in the purchase process. - Mortgage pre-approvals that start with estimated insurance should be updated once a specific property is identified. - Kerls said insurance needs to be part of the mortgage conversation early enough to avoid a closing problem.

The bottom line: - The FAIR Plan increase could cut into borrowing power for California buyers at the same time higher mortgage rates are already limiting affordability. - For buyers in insurance-sensitive markets, the monthly housing payment is now a two-front calculation: mortgage terms and required coverage.