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General ConstructionOuter RichmondPermit issued

New 2-Story Addition at 459 27th Av, San Francisco

459 27th Av, Outer Richmond, 94121

Winston

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Reported project cost

$558,517

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

Issued
August 18, 2026
Expires
—
License
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What was permitted

Homeowners in the Outer Richmond area considering expanding their living space can use this permit as a cost benchmark. This project involved the construction of a new two-story horizontal rear addition to a single-family dwelling, reconfiguring interior layouts and adding new rooms.

The permit for this significant addition was issued on August 18, 2026, with an estimated cost of $558,517. Sf Builders Inc is the contractor for this extensive renovation.

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View the official permit record

Tracking number, work description, cost and dates

Tracking number202510107168
Work permit #—
Job filing number—
Work typeAdditions & Alterations · 1 Family Dwelling
Statusissued
Job descriptionnew 2-story horizontal rear addition. new office and bathroom on 1/f. relocate kitchen and living from 2/f to 1/f. reconfig stairs, add master bedroom on 2/f.
Floor / unit—
Estimated cost$558,517
ApprovedAugust 11, 2026
IssuedAugust 18, 2026
Expires—
BBL—
BIN—

Related searches

home additionOuter RichmondSan Franciscosingle-family dwellingadditions & alterations$558,517