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in South San Francisco, CA
South San Francisco sits in San Mateo County, where home prices run high even by Bay Area standards. FHA loans offer low down payments with flexible credit, while USDA loans promise zero down but require income limits and property location rules.
Most of South San Francisco won't qualify for USDA financing due to population density and proximity to downtown SF. FHA becomes the practical choice for most buyers here, though checking USDA eligibility on the outskirts costs nothing.
FHA loans require just 3.5% down with credit scores as low as 580. You'll pay upfront mortgage insurance (1.75% of the loan) plus monthly premiums for the life of the loan on most purchases.
San Mateo County's FHA limit is $1,249,125 for single-family homes as of 2026. That covers most starter homes and condos in South San Francisco, though you'll hit that ceiling faster here than inland.
USDA loans offer zero down payment financing for rural and some suburban areas. Borrowers must meet income limits (typically 115% of area median) and properties must fall within USDA-designated eligible zones.
The catch in South San Francisco: almost none of the city qualifies as rural. USDA maps show most of San Mateo County marked ineligible due to population density and proximity to major employment centers.
Down payment separates these programs first. FHA needs 3.5% saved while USDA requires nothing down. But USDA's geographic restrictions eliminate it for 95% of South San Francisco properties.
Income limits cut differently. FHA has none—earn whatever you want. USDA caps income at area median levels, which disqualifies many Bay Area dual-income households even if the property somehow qualifies.
Mortgage insurance costs vary. FHA charges 1.75% upfront plus 0.55%-0.85% annually. USDA charges 1% upfront and 0.35% annually—cheaper long-term, but only if you can use the program at all.
Run the USDA eligibility map first. If your target property falls outside the zone or your household income exceeds limits, FHA becomes your only government-backed low-down option.
For the rare South San Francisco properties that do qualify for USDA—typically on the city's western edge near unincorporated areas—compare your total costs. Zero down sounds great until you factor in commute times and resale liquidity in fringe locations.
Most South San Francisco buyers end up with FHA by default. The program works everywhere in the city, handles higher incomes, and lenders process them faster since they see ten FHA loans for every USDA file.
No. USDA maps show most of South San Francisco as ineligible due to population density. Check the USDA eligibility map for your specific address before assuming you qualify.
USDA charges less—1% upfront and 0.35% annually versus FHA's 1.75% upfront and 0.55%-0.85% annually. But USDA's location restrictions usually eliminate it as an option here.
Only USDA caps income at area median levels. FHA has no income ceiling, making it work for higher-earning Bay Area households.
FHA caps at $1,249,125 for single-family homes. USDA limits vary by area but become irrelevant since most local properties don't qualify geographically.
FHA typically closes quicker. Lenders process them daily while USDA files require extra eligibility verification and underwriting steps that local lenders see less often.