Jumbo vs. Conforming Loans in California (2026)

I’m Michael DiVita (DRE #01372066 | NMLS #241655), owner of DiVita Home Finance (DRE #01818285 | NMLS #323700) in Tiburon, CA. I’ve been in California mortgage lending since 2000 and founded DiVita Home Finance in 2007. I’m known as a creative mortgage broker: when a bank says no, I find the lender and the loan structure that can say yes. The conforming-versus-jumbo decision comes up on almost every Bay Area purchase I work on. Call (800) 239-1103.

In 2026, a California loan is “conforming” up to your county’s limit — $832,750 in baseline counties and up to $1,249,125 in the highest-cost counties — and “jumbo” above that. Conforming loans allow smaller down payments, lower credit scores and higher debt ratios; jumbo loans usually need 10%–20% down, 700+ credit and more reserves. Rates are often closer than people expect: in the MBA’s survey for the week ending September 18, 2026, the average 30-year fixed was 7.12% on conforming loans and 7.15% on larger loans.

Conforming vs. Jumbo: Key Differences

2026 Conforming Limits: Where Jumbo Starts by County

Loans between $832,751 and your county’s limit are “high-balance conforming.” They follow Fannie Mae and Freddie Mac rules but carry somewhat different pricing and require at least 5% down. Full county list: 2026 conforming loan limits.

How Rates Compare in 2026

The old rule of thumb that jumbo rates are always much higher no longer holds. Jumbo pricing depends on the lender’s appetite, your credit, your down payment and your relationship with the lender, and at times jumbo rates have matched or undercut conforming rates. In the Mortgage Bankers Association’s weekly survey for the week ending September 18, 2026, the average 30-year fixed contract rate was 7.12% for conforming balances and 7.15% for balances above $832,750.

What usually matters more than the headline rate:

• Loan-level pricing. Conforming pricing includes Fannie Mae and Freddie Mac loan-level adjustments for credit score and down payment, and high-balance loans are priced somewhat differently from standard conforming loans. A buyer with 5% down and a 700 score feels this far more than one with 25% down and 780.
• Mortgage insurance. A 5%-down high-balance loan carries PMI; a jumbo loan with 20% down doesn’t.
• Qualifying rules. A borrower at 48% debt-to-income may be approvable conforming but not jumbo, and a jumbo lender may accept RSU or asset-based income that works better for some buyers.

On a $1.5 million loan, every 0.25% in rate is worth roughly $250 a month in principal and interest at today’s rate levels, so I price both structures side by side.

Strategy: Keep the Loan Under the Limit

What decides conforming vs. jumbo is the loan amount, not the price. A few ways to stay conforming:

• Put down a little more. On a $1,400,000 purchase in a $1,249,125 county, $150,875 down (about 10.8%) keeps the loan exactly at the limit.
• Piggyback second. On a $1,500,000 purchase, an 80-10-10 structure puts the first mortgage at $1,200,000 (conforming), a $150,000 second, and 10% down, with no PMI. The second carries a higher rate, so run the blended cost.
• Gift of equity or family gift to increase the down payment.

When Jumbo Is the Better Choice

• Your loan must exceed the county limit and a piggyback doesn’t pencil out.
• You’re self-employed and a bank statement or asset-based jumbo fits your income better than tax returns.
• Your compensation is heavily RSUs and the right jumbo lender counts it more favorably — see RSU mortgages.
• The condo is non-warrantable and can’t be financed conforming — see non-warrantable condos.
• You want an interest-only option, which conforming loans don’t offer — see interest-only mortgages.
• You’d rather put 20% down and avoid mortgage insurance than use a 5%-down high-balance loan with PMI.

Frequently Asked Questions

What is the jumbo loan threshold in California in 2026?

It depends on the county. Jumbo starts above $1,249,125 in the highest-cost counties (San Francisco, San Mateo, Santa Clara, Marin, Alameda, Contra Costa, Los Angeles, Orange, Santa Cruz, San Benito), above $1,104,000 in San Diego, above $897,000 in Sonoma, and above $832,750 in baseline counties such as Sacramento and Riverside.

Are jumbo rates higher than conforming rates?

Not always. In the MBA’s survey for the week ending September 18, 2026, 30-year fixed rates averaged 7.12% for conforming loans and 7.15% for larger loans. Your actual rate depends on credit, down payment and the lender.

Are jumbo loans harder to qualify for?

Usually. Jumbo lenders typically want 700–720+ credit, 10%–20% down, debt-to-income around 43%, and 6–12 months or more of reserves, compared with 620 credit, 3%–5% down and up to 50% debt-to-income on conforming loans.

Can I put 3% down on a high-balance conforming loan?

No. 3% down is only available up to $832,750. High-balance conforming loans require at least 5% down on a one-unit primary home.

Can I structure my purchase to avoid a jumbo loan?

Often. A larger down payment or an 80-10-10 piggyback second can keep the first mortgage at or under the conforming limit. Compare the blended payment against a straight jumbo loan before deciding.