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General ConstructionCastro/Upper MarketPermit issued

1 Family Dwelling Alterations at 3936 21st St, San Francisco

3936 21st St, Castro/Upper Market, 94114

Winston

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Reported project cost

$179,000

As declared on the permit filing. Alterations · 1 Family Dwelling.

Issued
July 1, 2026
Expires
—
License
—

What was permitted

This permit covers interior alterations to a single-family dwelling in San Francisco's Castro/Upper Market neighborhood. The project focuses on converting existing habitable space on the first floor into specialized rooms, including a bathroom, media room, gym, and wine room.

A new window will be installed on the rear facade, but the overall gross floor area of the building remains unchanged. This extensive interior renovation of 836 sq ft was issued on July 1, 2026, with an estimated cost of $179,000, managed by Ket Construction Inc.

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View the official permit record

Tracking number, work description, cost and dates

Tracking number202606253888
Work permit #—
Job filing number—
Work typeAlterations · 1 Family Dwelling
Statusissued
Job descriptioninterior remodel converting on habitable 1st fl space into habitable spaces inlculding a bath, media, study, gym, and wine room. new window being installed on rear facade. the existing buildings gross floor area is not being modified. 836 sf of prev e occupied floor is being renovated.
Floor / unit—
Estimated cost$179,000
ApprovedJuly 1, 2026
IssuedJuly 1, 2026
Expires—
BBL—
BIN—

Related searches

1 family dwellingsan franciscocastro/upper marketinterior remodelhome renovationhabitable space$179,000