Where jumbo begins in 2026
A loan is jumbo when it exceeds the conforming limits: $832,750 baseline, and $1,249,125 in high-cost counties including Orange, Los Angeles, and the Bay Area core. At Southern California prices, jumbo is not a luxury niche; it is Tuesday. The full county-by-county breakdown lives in the 2026 loan limits guide.
How jumbo underwriting differs
Without Fannie and Freddie's automated blessing, jumbo files are underwritten by humans, which cuts both ways. Expectations rise: credit typically 680 to 700+, down payments from 10% (often 20%+ for the best pricing), and reserves of 6 to 12 months of payments. But human underwriting also means a well-told file wins: restricted stock, K-1 income, and complex portfolios get read intelligently instead of rejected by algorithm.
The biggest California advantage is documentation flexibility. Bank statement jumbo and asset-based jumbo serve exactly the entrepreneurs and investors who dominate the state's luxury markets; the case studies include an $8M close structured this way.
Rate myth, buried
Jumbo rates are not automatically higher than conforming; they frequently run at or below conforming for strong files, because banks compete hard to hold these loans in portfolio. Pricing follows the file strength, the reserves, and the relationship, which is precisely why a broker who shops multiple jumbo investors earns their keep.