Jumbo Loans in California: When You Need One and What Lenders Review

By Matthew Martinez, Founder, CEO & Managing Broker, Diamond Real Estate Group. California DRE #01869679.

A jumbo loan is a mortgage larger than the conforming loan limit for the county where the home sits, so Fannie Mae and Freddie Mac can’t buy it. For 2026, the one-unit conforming limit runs from $832,750 to $1,249,125 depending on the county, which means a jumbo starts at very different loan amounts in Sacramento, Sonoma and San Francisco. Because a jumbo is underwritten to each lender’s own guidelines, reserves, debt-to-income and appraisal requirements vary from lender to lender, and it pays to ask early.

What "jumbo" means, and where the term comes from

The Federal Housing Finance Agency (FHFA) sets the maximum loan size Fannie Mae and Freddie Mac can acquire each year. For 2026 the baseline for a one-unit home is $832,750, and in high-cost areas the limit can rise to a ceiling of $1,249,125, which is 150% of the baseline (FHFA, November 25, 2025). These values apply to loans the two companies acquire in calendar year 2026.

"Jumbo" is industry shorthand, not an FHFA program name. It describes any loan above the applicable limit. Because the loan can’t be sold to Fannie Mae or Freddie Mac, lenders typically hold jumbo loans themselves or sell them to private investors, which is why guidelines differ from one lender to the next.

There’s also a middle tier. In counties where the limit is above the baseline, a loan between $832,750 and the county limit is still conforming. Fannie Mae calls these high-balance mortgage loans. They must be conventional first liens underwritten through its Desktop Underwriter system, and otherwise follow its standard rules (Fannie Mae Selling Guide B5-1-01). One practical difference: Fannie Mae’s 97% loan-to-value options exclude high-balance loans (Fannie Mae 97% LTV FAQs).

Where jumbo starts in the counties we serve

The limit applies to the loan amount, not the price, and it goes by the county where the property is located. The table shows each county’s 2026 one-unit limit and, as simple arithmetic, the highest purchase price that keeps the loan conforming with a 20% down payment.

Limits from the FHFA 2026 county loan limit list. The price column is our arithmetic (limit divided by 0.80), rounded, and isn’t a lending quote. For two- to four-unit limits and FHA limits, see our 2026 loan limits by county. Check the current figure on FHFA’s loan limit page before you write an offer, because each year’s limits replace the last.

Two things follow from the table. In Sonoma, a buyer purchasing at $1,200,000 with 20% down would need a $960,000 loan, above the $897,000 limit, so it would be a jumbo. The same loan in Marin would be conforming. And a bigger down payment can bring a loan back under the limit, which is worth pricing out with your lender before you settle on a structure.

What lenders typically review on a jumbo

Everything in this section describes common lender practice, not a legal rule. Each jumbo lender or investor sets its own standards, and they change. Get the lender’s current guidelines in writing.

The legal floor every lender must meet

Federal ability-to-repay rules apply to most residential mortgages, jumbo or not. Under Regulation Z, a lender must consider eight factors: income or assets, employment status, the new loan payment, payments on any simultaneous loan, mortgage-related obligations such as taxes and insurance, other debts and support obligations, debt-to-income ratio or residual income, and credit history (12 CFR 1026.43(c)(2)). Income and assets the lender relies on must be verified with reasonably reliable third-party records, such as tax-return transcripts, W-2s, payroll statements or bank records.

Reserves

Reserves are liquid funds you still have after paying the down payment and closing costs. Jumbo lenders often ask for more months of reserves than a conforming loan would, and some count retirement accounts or brokerage assets at a discount. Expect the requirement to rise with loan size, with second homes, and with more than one financed property.

Debt-to-income ratio

Lenders compare your monthly debts, including the new housing payment, with your gross monthly income. Jumbo lenders set their own maximums and may tighten them for larger loans or lower credit scores. If you’re self-employed or have income from rentals, vineyards or a business, ask how that income will be calculated before you apply, because the answer can change how much you qualify for.

Credit

Most jumbo lenders publish a minimum credit score, and the score often interacts with the down payment and reserves: a smaller down payment may need a higher score. Get the lender’s matrix rather than relying on a general number.

Appraisal

The appraisal has to support the price, and jumbo lenders are often stricter about it. Some require a second appraisal above a set loan amount, or a review of the first. Unique properties (acreage, estate homes, homes with vineyards or guest units) can be harder to appraise because comparable sales are thin. You have a federal right to a copy of each appraisal on a first-lien home loan, delivered promptly when completed or three business days before closing, whichever is earlier, unless you waive that timing (12 CFR 1002.14). If the value comes in short, our guides to the appraisal contingency and the appraisal gap explain your options.

Property type and documentation

Lenders may limit jumbo financing on condos in projects they haven’t reviewed, on large rural parcels, or on properties with income-producing uses. Expect to document large deposits and the source of your down payment.

Jumbo, high-balance, FHA or VA: how the options line up

Sources: FHFA, Fannie Mae B5-1-01, VA loan limits. FHA county limits are on our loan limits page.

For eligible veterans, VA’s rules can matter a lot at higher prices: with full entitlement, VA says there’s no loan limit as long as the lender approves you and the appraisal supports the price (VA). See our VA home loans guide.

Planning a jumbo purchase in California

1. Get a full pre-approval, not a quick pre-qualification. Jumbo underwriting turns on documents. Have the lender review tax returns, asset statements and any business income up front.
2. Ask three questions of every lender: how many months of reserves they need and which accounts count, what DTI ceiling applies at your loan amount and score, and whether a second appraisal is required.
3. Build the timeline into your offer. A California purchase agreement sets the length of your loan contingency. Jumbo files with complex income or a second appraisal may need more time.
4. Plan the down payment around the limit. If you’re close to your county’s conforming limit, compare a conforming or high-balance loan with a larger down payment against a jumbo. In some situations, a bridge loan or the sale of your current home affects how much you can put down.
5. Budget the other costs. Property taxes, insurance and HOA dues count in your DTI. In wildfire areas, insurance availability can affect both the approval and the timing; see our guide to homeowners insurance during escrow.

We work with buyers in Marin County, Napa County, Sonoma County and San Francisco, and can help you line up a lender before you tour. Our financing overview covers the other loan types.

Questions people ask

What is the jumbo loan limit in California for 2026?

There isn’t one statewide number. A loan is jumbo when it’s above the conforming limit for the county, which for a one-unit home ranges from $832,750 to $1,249,125 in 2026 (FHFA). In Sonoma it’s $897,000; in Napa, $1,017,750.

Is a high-balance loan the same as a jumbo?

No. A high-balance loan is above the national baseline but within the county’s higher limit, so Fannie Mae or Freddie Mac can still buy it. A jumbo is above the county limit and is underwritten to the lender’s own rules.

How much do I need to put down on a jumbo loan?

It depends on the lender, your credit, the loan amount and the property type. There’s no federal minimum for jumbo loans. Ask each lender for its current down payment and reserve matrix.

Do jumbo loans need two appraisals?

Some lenders require a second appraisal above a certain loan amount; others don’t. It’s lender practice, not a federal rule. Either way, you’re entitled to a copy of each appraisal before closing (12 CFR 1002.14).

Does the price or the loan amount decide if I need a jumbo?

The loan amount. A $1,200,000 home with $400,000 down needs an $800,000 loan, which is conforming in every county we serve.

Can I use a VA loan instead of a jumbo?

Possibly. With full entitlement, VA doesn’t apply a loan limit, though the lender must approve you and the appraisal must support the price (VA).

Will the 2027 limits change whether my loan is a jumbo?

They could. FHFA announces each year’s limits in advance; the 2026 values were announced November 25, 2025. If you’ll close in early 2027, ask your lender which year’s limit applies.

Sources & notes

1. FHFA: Conforming loan limit values for 2026 (Nov. 25, 2025): baseline, ceiling, method, effective year.
2. FHFA: 2026 full county loan limit list and conforming loan limit data page.
3. Fannie Mae Selling Guide B5-1-01: High-balance mortgage loan eligibility and underwriting.
4. Fannie Mae: 97% LTV options FAQs: high-balance loans excluded.
5. 12 CFR 1026.43: Ability-to-repay requirements (eCFR).
6. 12 CFR 1002.14: Copies of appraisals (CFPB).
7. VA: Home loan limits.

Reserve, DTI, credit and second-appraisal practices described above are general lender practice, not regulatory requirements, and vary by lender. The price examples are hypothetical arithmetic. We don’t quote rates. General information, not legal, tax or lending advice. Updated November 2026. Primary sources are linked in this guide.

Related: 2026 loan limits by county · Loan contingency · Financing · Buy with Diamond