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3659-3677 20th St, San Francisco, California 94110

3659-3677 20th St

San Francisco, California

3659-3677 20th St is a multi-family property in the city of San Francisco, California. It is located in the San Francisco County region of the United States, and shares postal code 94110.

This location is a total of 12,814 square feet, has 2 floors, roof access, was built in 1906, and has a floor area ratio of 1.114. The property has 20 residential units, a 11,499 square foot lot area, and is zoned as RH3.

Map
Property Information

Name

3659-3677 20th St

Property Type

Multi-Family

Year Built

1906

Zoning

RH3

Building Details

Square Footage

12,814 sq ft

Lot Area

11,499 sq ft

Floors

2

Number Of Buildings

1

Floor Area Ratio

1.114

Units & Spaces

Residential Units

20

Infrastructure & Security

Roof Access

Yes

Security

No

System Information

Census Tract

6075020700

Updated

1/24/2026

Created

11/14/2025