4440 20th St

San Francisco permit 202504214831 · Castro/Upper Market

Deck, stairs or patio coverOver-the-counter, with plansComplete

Street view · May 2025

Google Street View of 4440 20th St, May 2025

Scope of work

As written on the permit application.

Main house rear ext. stairs reconfiguration; stair from 2nd fl to the ground fl to be taken out. infill (e) door to the stairs to create new window. extend deck landing on ground floor; new fire wall along property line @ rear stairs w/new footing; add skylights @ bathroom & above interior stairs.

Timeline

Key dates from the city record.

Filed: Apr 21, 2025
Issued: Jun 2, 2025 (1 month after filing)
Completed: Nov 20, 2025 (6 months after issuance)

For comparison, San Francisco permits with the same review (over-the-counter, with plans) filed in 2025 were typically issued within 1 month (median of 5,178 issued permits).

City plan review

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

Review stops: 6 stops across 2 departments
Comments issued: None

Review stop	Arrived	Finished	Result
Intake Building Inspection · INTAKE	Apr 21, 2025	Apr 21, 2025	Administrative
Zoning review Planning · CP-ZOC	Apr 21, 2025	Apr 21, 2025	Approved
Zoning review Planning · CP-ZOC	Apr 21, 2025	Apr 21, 2025	Approved
Building plan review Building Inspection · BLDG	Apr 21, 2025	Apr 21, 2025	Approved
Mechanical and energy plan review Building Inspection · MECH	Apr 21, 2025	Apr 21, 2025	Approved
Central Permit Bureau Building Inspection · CPB	Jun 2, 2025	Jun 2, 2025	Administrative

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: $30,000

People named on this permit

Only people we matched to a California license are listed.

Name	Role	License on permit
Jack W J Tam	Architect	C11181
Michael Austin Hom Hom & Pisano Engineering Inc.	Engineer	71450

Sources

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

Permit 202504214831 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 May 2025