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2420 Folsom St

San Francisco permit 202403298886 · Mission

ADUFull plan reviewFiled
Street view · Jan 2023
Google Street View of 2420 Folsom St, Jan 2023
Scope of work
As written on the permit application.

Interior renovation to add 3 new adu units per state program to replace garage at ground floor. new bicycle parking, new gas and electrical room, new street tree, no change to existing use and height.

The building, before and after
As recorded on the permit.
FactBeforeAfter
UseApartmentsNo change
Units710
Stories4No change
Timeline
Key dates from the city record.
Filed
Mar 21, 2026
Issued
Not issued yet
Completed
Not completed yet
City plan review
Each review stop the plans went through, from the city's routing record.
Review stops
26 stops across 6 departments
Comments issued
10 times, by Permit Center, Building Inspection, Planning, Fire Department, Public Works
Review stopFinishedResult

Permit Center

Permit Center · PERMIT-CTR

Apr 5, 2024Issued Comments

Code enforcement

Building Inspection · CES

Mar 29, 2024—

Electrical pre-screening

Building Inspection · PRE-MECH-E

Apr 1, 2024Not Applicable

Mechanical pre-screening

Building Inspection · PRE-MECH

Apr 3, 2024Issued Comments

Building pre-screening

Building Inspection · PRE-BLDG

Apr 4, 2024Issued Comments

Apartment and hotel inspection

Building Inspection · HIS

Aug 20, 2024Approved

Permit Center

Permit Center · PERMIT-CTR

Nov 21, 2025Issued Comments

Permit Center

Permit Center · PERMIT-CTR

Mar 20, 2026Approved

Central Permit Bureau

Building Inspection · CPB

Mar 23, 2026Administrative

Zoning review

Planning · CP-ZOC

Apr 6, 2026Issued Comments

Building plan review

Building Inspection · BLDG

Mar 25, 2026Issued Comments

Structural plan approval

Building Inspection · PAD-STR

Apr 15, 2026Issued Comments

Mechanical and energy plan review

Building Inspection · MECH

Apr 10, 2026Issued Comments

Fire Department housing review

Fire Department · SFFD-HQ

Apr 1, 2026Issued Comments

Street use and mapping

Public Works · DPW-BSM

Mar 26, 2026Approved

Urban forestry

Public Works · DPW-BUF

Apr 14, 2026Issued Comments

Public Utilities Commission review

Public Utilities · SFPUC

Apr 2, 2026Approved

Permit Processing Center

Building Inspection · PPC

In progress—

Zoning review

Planning · CP-ZOC

In progress—

Building plan review

Building Inspection · BLDG

In progress—

Structural plan approval

Building Inspection · PAD-STR

In progress—

Mechanical and energy plan review

Building Inspection · MECH

In progress—

Fire Department housing review

Fire Department · SFFD-HQ

In progress—

Urban forestry

Public Works · DPW-BUF

In progress—

Development fee collection

Building Inspection · DFCU

In progress—

Central Permit Bureau

Building Inspection · CPB

In progress—

Source: DataSF 87xy-gk8d (Building Permit Addenda with Routing), retrieved Nov 6, 2026. Reviewer names and notes are left out.

Permit details
Permit type
Additions alterations or repairs
Status
Filed
Estimated cost
$295,000
People named on this permit
Only people we matched to a California license are listed.
NameRoleLicense on permit
Wing Kin Lee

Wing Lee Architects

ArchitectC28929
Lou Xiao

Lx Engineering

EngineerS5130
Sources
Everything on this page comes from public records. Check them yourself.
Permit 202403298886 on the city's permit tracking site

San Francisco Department of Building Inspection, the official record