3173 21st Street, San Francisco, CA 94110, San Francisco, 94110 - 7 bed, 0 bath
Loading property details...
San Francisco, CA 94110
Analysis of 3173 21st Street, San Francisco, CA 94110 is currently available with a list price of $1,750,000. The property maintains a Fair Condition Rating (50/100), suggesting the property is in acceptable condition with potential for value enhancement through selective updates and improvements. Located in a high-demand neighborhood within the San Francisco Unified School District, this asset is categorized as a low-risk, high-reward acquisition suitable for both Buy-and-Hold Investors and Owner-Occupants willing to undertake light renovation work.
Property is moderate renovation needed.
Although the property features a significant system upgrade with a new 400-amp electrical service, the 1900 construction and '60% rent upside' indicate that the residential kitchens and bathrooms are likely dated and have not been renovated recently. The presence of an unfinished ADU and the need to bring units to market rates align with the 'Fair' criteria for properties needing minor updates.
Elementary School: Chinese Immersion School At Deavila (9/10). Middle School: Lilienthal (Claire) Elementary School (9/10). High School: Lowell High School (10/10).
The property features a shovel-ready 1-bedroom ADU and an estimated 60% rent upside, offering investors a clear path to substantial equity growth and increased cash flow.
Equipped with a new 400-amp electrical service and separate water meters for each unit, the building benefits from high operational efficiency and reduced owner expenses.
Realizing the property's full potential requires additional investment to finish the ground-floor ADU and likely renovate existing units to achieve market rents.
Built in 1900, the property may carry long-term maintenance requirements or seismic considerations inherent to century-old San Francisco structures.
3173-3173A 21st Street is a 4-unit property featuring 3 residential apartments (1) 1-bedroom 1-bath plus den unit, (1) 2-bedroom 1-bath and one (1) spacious 4-bedroom, 2-bath unitalongside an ADAcompliant ground-floor commercial space that is being operated as a hair salon and is leased at $2,799.00 per month on a 3-year lease that was signed in October 2025. There's a shovel-ready 1-bedroom ADU on the ground floor that awaits finishing by a future owner, offering additional income potential once completed. With the existing units brought up to market rents and the ADU finished, there is approximately 60% upside in the current rent roll. With separate individual water meters, new 400 amp electrical service, the property benefits from extremely efficient operating expenses, making this an attractive opportunity for an investor seeking both stable income and growth potential.
No exterior & parking available.
Grades K-5 • 0.2 mi
Grades K-5 • 0.3 mi
Grades K-5 • 0.8 mi
No sensitive facilities data found.
| Feature | Subject | Average Home | Neighborhood Ranking (50 Listings) |
|---|---|---|---|
| Beds | 7.0 | 7.0 | 50% |
| Baths | 0.0 | 0.0 | 50% |
| Square foot | 2,350 | 4,675 | 33% |
| Lot Size | 2,113 | 3,850.7 | 33% |
| Price | $1.75M | $2.50M | 33% |
| Price per sq ft | $745 | $631 | 67% |
| Built year | 1900 | 1900 | 50% |
| HOA | $0 | $0 | 50% |
| Days on market | 31 | 299 | 33% |
May 13, 2026
$1,750,000
Initial Listing