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
$1,277,056
9% BelowMARKET VALUE
SUMMARY
This Residential Income Duplex is a Strong Value Opportunity, listed at $1,150,000—positioned well below the $1,277,057 Fair Market Value by 9%. This valuation gap offers $127,057 in Instant Equity. Featuring a Fair Condition Rating, the property includes permitted additions, a newer roof, and City Lights/Hills Views. Its prime location near the biotech hub and downtown makes it an ideal asset for Buy-and-Hold Investors or Owner-Occupants seeking a house-hack strategy in a high-demand market.
Estimated Market Value
$1,277,056+$127,056 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.
The property is well-maintained but dated. Major renovations to the kitchens and bathrooms occurred between 2000 and 2010 (14-24 years ago), which falls into the 'Fair' category for age and style. While the home features a newer roof (7 years) and double-pane windows, the interior finishes like oak cabinetry, parquet flooring, and older appliances are dated and will eventually require modern updates.
PROSSTRENGTHS & OPPORTUNITIES
- Income Potential and Versatility
As a duplex with a currently vacant lower unit, this property offers an immediate opportunity for rental income or a flexible multi-generational living arrangement in a high-demand market.
- Strategic Biotech Hub Location
Situated in the desirable Orange Park neighborhood, the property is ideally located near major biotech employers, downtown amenities, and transit, ensuring long-term desirability and low vacancy rates.
- Extensive Permitted Upgrades
The home features permitted additions, remodeled kitchens and baths, double-pane windows, and a newer roof, significantly reducing the need for immediate capital improvements.
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.
- Limited Lot Size
The 2,500 square foot lot is relatively compact for a multi-unit property, resulting in a small shared yard that may limit outdoor privacy and future expansion possibilities.
- Vintage Structural Age
Originally constructed in 1930, the property may require more frequent maintenance of its older core systems and foundation compared to more modern residential income buildings.
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 | 16 | 33 |
Pricing History
Listed for Sale
Aug 24, 2026
$1,150,000
Initial Listing