3267 20th St

San Francisco permit 201602179780 · Mission

Seismic retrofit or foundation (type unconfirmed)Over-the-counter, with plansComplete

Street view · Sep 2026

Google Street View of 3267 20th St, Sep 2026

Scope of work

As written on the permit application.

Interior renovation of (e) single family residence. remove (e) slab & excavate for (n) foundation, convert 1 car garage to 3 car garage, convert rear 1/f from non habitable to habitable space, replace (e) interior stair from 1/f to 2/f, add (n) powder room on 2/f, (n) bath on 3/f

Timeline

Key dates from the city record.

Filed: Feb 17, 2016
Issued: May 11, 2016 (3 months after filing)
Completed: Sep 13, 2017 (16 months after issuance)

City plan review

Each review stop the plans went through, from the city's routing record.

Review stops: 7 stops across 3 departments
Comments issued: Not recorded for this permit

The city lists the review stops for this permit but not their results, so we can't tell whether reviewers asked for changes.

Review stop	Arrived	Finished	Result
Intake Building Inspection · INTAKE	Feb 17, 2016	Feb 17, 2016	—
Zoning review Planning · CP-ZOC	Feb 17, 2016	Feb 17, 2016	—
Mechanical and energy plan review Building Inspection · MECH	Feb 18, 2016	Feb 18, 2016	—
Public Utilities Commission review Public Utilities · SFPUC	Feb 18, 2016	Feb 18, 2016	—
Building plan review Building Inspection · BLDG	Feb 24, 2016	Feb 24, 2016	—
Building plan review Building Inspection · BLDG	Feb 26, 2016	Feb 26, 2016	—
Central Permit Bureau Building Inspection · CPB	May 11, 2016	May 11, 2016	—

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

Permit details

Permit type: OTC alterations permit
Status: Complete
Estimated cost: $186,000

People named on this permit

Only people we matched to a California license are listed.

Name	Role	License on permit
John Git Hoong Lum John Lum Architecture Inc.	Architect	21837
Andrew Eric Arnold	Engineer	C66537

Sources

Everything on this page comes from public records. Check them yourself.

Permit 201602179780 on the city's permit tracking site

San Francisco Department of Building Inspection, the official record

DataSF Building PermitsAddress, scope, cost, dates and status
Retrieved Nov 5, 2026
DataSF Building Permit ContactsArchitects and engineers named on the permit
Retrieved Nov 5, 2026
DataSF Building Permit Addenda with RoutingPlan review stops and results
Retrieved Nov 6, 2026
Google Street ViewStreet photo
Taken Sep 2026