ZIP CODE 94080 // SAN FRANCISCO-OAKLAND-BERKELEY, CA // DATA AS OF 2026-09-30
South San Francisco, CA (94080) Rental Property Cap Rate & Cash Flow Report
Located in San Mateo County (South San Francisco, CA), Zip Code 94080 ranks #383 of 500 within this selected sample (24th percentile) with a Zillow ZHVI typical home-value index of $1,214,105 (+3.6% YoY) and a ZORI observed market rent of $4,134/mo (+19.3% YoY). Requires at least 69.1% down payment at 6.5% interest to reach $0/mo break-even cash flow. This model combines different housing populations; it is not an observed average property return. Costs assume state-average tax, 0.5% annual insurance, 13% reserves and no HOA or management. Figures below follow your edits; this headline describes the original benchmark.
Net Monthly Cash Flow
-$3,767/mo
Annual: -$45,202/yr
Modeled Cap Rate
2.34%
NOI: $28,468/yr
Cash-on-Cash Return
-16.19%
Cash Needed: $279,244
1% Rule Ratio
0.34%
Gross Yield: 4.09%
Break-Even Rent
$8,464/mo
State Tax: 0.71%/yr
INTERACTIVE PRO-FORMA STATEMENT (ZIP 94080 BENCHMARK)
Edit any value
Purchase Price (ZHVI proxy)
Monthly Gross Rent (ZORI proxy)
Down Payment (%)
Interest Rate (30Y Fixed %)
Annual Property Tax (CA Avg 0.71%)
Annual Home Insurance ($)
Monthly HOA Fee ($)
Monthly Debt Service (P&I)
-$6,139/mo
Monthly Operating Expenses (Tax + Ins + 13% Reserves)
-$1,762/mo
HISTORICAL ZHVI PRICE VS. ZORI RENT TRAJECTORY (94080)
| Year | ZHVI Value | ZORI Rent | Gross Yield |
|---|---|---|---|
| 2021 | $1,135,616 | $3,122/mo | 3.30% |
| 2022 | $1,211,250 | $3,300/mo | 3.27% |
| 2023 | $1,142,125 | $3,290/mo | 3.46% |
| 2024 | $1,183,025 | $3,398/mo | 3.45% |
| 2025 | $1,171,813 | $3,464/mo | 3.55% |
| 2026 | $1,214,105 | $4,134/mo | 4.09% |
COMPARABLE U.S. RENTAL MARKETS
| Zip / City | Price | Rent | Cap Rate | Cash Flow |
|---|---|---|---|---|
| 94110 San Francisco, CA | $1,446,124 | $4,931/mo | 2.35% | -$4,481/mo |
| 93906 Salinas, CA | $711,968 | $2,418/mo | 2.34% | -$2,214/mo |
| 91911 Chula Vista, CA | $774,232 | $2,618/mo | 2.32% | -$2,418/mo |
| 91342 Los Angeles, CA | $788,086 | $2,657/mo | 2.31% | -$2,468/mo |
| 92805 Anaheim, CA | $851,242 | $2,864/mo | 2.30% | -$2,671/mo |
| 94112 San Francisco, CA | $1,183,444 | $4,080/mo | 2.39% | -$3,628/mo |