Seattle WA Jumbo Loan Limits 2026: King County $1,006,250 Conforming & Jumbo Guide

2026 conforming loan limits for Seattle / King County, WA: 1-unit: $1,006,250 (high-cost area). 2-unit: $1,288,400. 3-unit: $1,557,200. 4-unit: $1,935,150. Any loan exceeding $1,006,250 for a single-family home in King County is considered a JUMBO loan. King County is one of the highest conforming limits in the US. This means buyers can finance up to $1,006,250 with conventional (Fannie/Freddie) loan terms before needing a jumbo. Seattle's median home price of ~$845,000 in 2026 means most Seattle buyers can still use conventional financing.

Seattle jumbo loan rates in May 2026: 30-year fixed jumbo: 6.25%–6.85% (best rates for 740+ credit, 20%+ down). 15-year fixed jumbo: 5.65%–6.25%. 7/1 ARM jumbo: 5.75%–6.35% (popular in Seattle for 5–10 year holds). 10/1 ARM jumbo: 6.00%–6.50%. Jumbo rates in Seattle are currently LOWER than in many other cities because local lenders (Chase, U.S. Bank, Washington Federal) actively compete for Seattle's affluent buyer market. With 740+ credit and 20% down: $1.5M Seattle jumbo at 6.25% = ~$9,240/month PITI.

Seattle jumbo loan requirements in 2026: Credit score: 700 minimum (720+ for best rates, 740+ for <6.25%). Down payment: 10%–20% (20% is standard; 10% possible with strong profile). DTI ratio: 43% max (36% preferred by top lenders). Cash reserves: 6–12 months PITI in verifiable assets after closing. Income documentation: full W-2/tax returns or 24-month bank statements for self-employed. Appraisal: required (two appraisals for loans over $2M). Property: primary residence, second home, or investment (investment jumbo = higher requirements). Seattle-specific: many tech workers use RSUs/stock grants as income — accepted by most jumbo lenders with 2-year vesting history.

Seattle / King County 2026 loan tiers: Conventional (conforming): up to $1,006,250 — Fannie Mae/Freddie Mac backed, standard documentation. High-balance conventional: $806,501–$1,006,250 — still agency-backed but slightly higher rate (+0.10%–0.25%). Jumbo: $1,006,251+ — portfolio or private backed, stricter requirements. Super jumbo: $2,500,000+ — very limited lenders, 25–30% down typical. Most Seattle buyers (median price $845K) can use high-balance conventional — avoiding jumbo altogether. Jumbo only required for Medina, Bellevue ($1.2M+), Mercer Island, and luxury Seattle neighborhoods.

Best jumbo mortgage lenders in Seattle 2026: (1) Chase Bank — best overall for Seattle jumbo ($0 origination with $250K+ assets), rates from 6.25%, up to $3M. (2) Washington Federal — best local Seattle bank, no-fee jumbo for existing customers. (3) U.S. Bank — strong jumbo ARM products, good for tech workers. (4) First Republic (acquired by JPMorgan) — was #1 for tech sector, now under Chase. (5) Flagstar Bank — strong jumbo products, accepts RSU income. (6) Better.com — fully digital jumbo, competitive rates, good for loans up to $2M. (7) HomePoint Capital — strong for self-employed Seattle buyers.