Permit GraphShortlistSan Francisco building permits since 2000

Block 1623, lot 014A

671 21st Ave

City’s use
Multi-Family Residential
Built
1923
Stories
2
Units
2
Rooms
4 bedrooms, 3 bathrooms
Building
3,025 sq ft
Lot
2,996 sq ft
Zoning
RH2
Construction type
D

From the assessor's latest secured roll, which can lag recent work. Lot plans, zoning and planning history on the city’s Property Information Map

Permits filed here

2 permits filed for this property since 2000.

CompletedIn progressNever finaledExpired or cancelled
FiledOutcomeAddressContractorWork described on the permitDeclared cost
Sep 24, 2025Completed
final sign-off Oct 2025
671 21st AvTom Lee Roofing Inc.re-roofing: remove and replace roofing material / existing roofing material (in-kind)
Details
Permit
202509245993
Status
complete
Filed
Sep 24, 2025
Permit issued
Sep 24, 2025
Final sign-off
Oct 14, 2025
Declared cost
$20,800
Address
671 21st Av

re-roofing: remove and replace roofing material / existing roofing material (in-kind)

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$20,800
Aug 22, 2023Never finaled
filed Aug 2023, never issued
671 21st Avinterior remodel of (e) 3-story single family residence for 4 bedroom 3.5 bath layout. remodel (e) kitchen.
Details
Permit
202308224960
Status
filed
Filed
Aug 22, 2023
Declared cost
$110,000
Address
671 21st Av

interior remodel of (e) 3-story single family residence for 4 bedroom 3.5 bath layout. remodel (e) kitchen.

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$110,000

Who worked here

Everyone with a license on these permits, by role, with how many permits each is on.

Contractors
Tom Lee Roofing Inc.
Architects
Serina Calhoun
Engineers
Michael Chan

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Starts from the last permit filed here; change it to describe your own project. Results cover two-family buildings like this one.