335 A Street, South San Francisco, California 94080, South San Francisco, 94080 - 0 bed, 0 bath
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335 A Street
South San Francisco, California 94080
ACTIVE
CONDITION: FAIR
0Beds
0Baths
2,070Sq Ft
2,500Lot Size
Property Price
LIST PRICE$1,150,000
EST. MARKET VALUE
$1,281,390
10% BelowMARKET VALUE
SUMMARY
This duplex represents a Strong Value Opportunity, listed at $1,150,000—positioned well below the $1,278,467 Fair Market Value by 10%. This valuation gap provides $128,467 in Instant Equity. With a Condition Rating of 4, the property features a newer roof and double-pane windows, offering a stable foundation for value-add cosmetic updates. Located in a prime biotech hub with City Lights and Hill views, this asset is ideal for Buy-and-Hold Investors or Owner-Occupants seeking a house-hack strategy.
Estimated Market Value
$1,281,390+$131,390 Equity Potential
Based on Realkey algorithm analyzing recent comparable sales in South San Francisco.
Condition Analysis
See Full ReportOVERALL CONDITION SCORE
Fair
TeardownExcellent
Property is moderate renovation needed.
Built in 1930 with additions and renovations completed between 2000 and 2010 (approx. 16-26 years ago). The kitchens and bathrooms feature dated oak cabinetry and older appliances, but the property is functional and well-maintained with a newer roof (7 years) and double-pane windows.
PROSSTRENGTHS & OPPORTUNITIES
- Investment Versatility
This duplex offers immediate flexibility with a vacant lower unit and an owner-occupied upper unit, ideal for house-hacking or generating rental income in a high-demand biotech hub.
- Prime Location
Situated in the desirable Orange Park neighborhood, the property is walking distance to downtown amenities and provides easy access to major transportation and employment centers.
- Key Infrastructure Upgrades
The property features a newer roof, double-pane windows, and permitted additions, reducing immediate maintenance concerns for a building of this vintage.
CONSRISKS & DEFICIENCIES
- MLS Listing Discrepancy
Living area discrepancy between mls listing and other public or private record. mls listing living area = 2070, other record living area = 1387.
- Aging Interior Finishes
Although remodeled, the updates range from 14 to 24 years old, which may require cosmetic modernization to achieve top-market rental rates or resale value.
- Compact Lot Size
The 2,500 square foot lot is relatively small for a multi-unit property, resulting in limited private outdoor space and shared yard usage.
About 335 A Street
Rare opportunity to buy this wonderful duplex in South San Francisco's desirable Orange Park neighborhood. The upper unit (#335) offers approximately 1171 sf with two bedrooms, two full baths (primary remodeled in 2010), kitchen (remodeled in 2004), dining room, living room, enclosed sunroom with views, and decks. Owners did an addition in 1998 with permits. This unit is currently owner occupied. The lower unit (#337) is fully electric and offers approximately 998 sf with one bedroom and one full bath. There's also a bonus room that can be utilized as a bedroom or office and a deck with access to the backyard. The kitchen and bathroom were remodeled in 2000 and the owners did an addition in 2000 with permits. This unit is currently vacant. Double pane windows throughout, newer roof (7 years), views from #335, shared yard with storage shed and washer/dryer is included. Plenty of storage, ample parking, Prime location near downtown shops, restaurants, schools, transportation, major biotech hub.
Property Details
Public Facts
- Property Type
- Duplex
- Year Built
- 1930
- Lot Size
- 2,500 Sq. Ft.
Interior
- Total Bedrooms
- 0
- Total Bathrooms
- -
Exterior & Parking
No exterior & parking available.
Utilities & Misc
- HOA Fee
- $0 / Month
Neighborhood Insights
South San Francisco Unified Schools
Los Cerritos Elementary School
Grades K-5 • 0.1 mi
4/10
Hillside Elementary
Grades PK-5 • 1.3 mi
0/10
Alta Loma Middle School
Grades 6-8 • 1.4 mi
5/10
Sensitive Facilities
No sensitive facilities data found.
Neighborhood Comparison
| Feature | Subject | Average Home |
|---|---|---|
| Beds | 0.0 | 0.0 |
| Baths | 0.0 | 0.0 |
| Square foot | 2,070 | - |
| Lot Size | 2,500 | - |
| Price | $1.15M | $1.36M |
| Price per sq ft | $556 | $698 |
| Built year | 1930 | 0 |
| HOA | $0 | $0 |
| Days on market | 62 | 33 |
Pricing History
Listed for Sale
Aug 24, 2026
$1,150,000
Initial Listing