1342 Mason St #0

San Francisco permit 202105100075 · Chinatown

ADUFull plan reviewIssued

Street view · Jun 2025

Google Street View of 1342 Mason St #0, Jun 2025

Scope of work

As written on the permit application.

Addition of one (1) accessory dwelling unit (adu), per state law, to an existing seven (7) unit building; total of 8 units. the proposed adu will be located within existing building envelope at the ground floor.

Timeline

Key dates from the city record.

Filed: May 10, 2021
Issued: Mar 7, 2023 (22 months after filing)
Completed: Not completed yet

City plan review

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

Review stops: 18 stops across 5 departments
Comments issued: Not recorded for this permit
Put on hold: 7 times

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
Planning review Planning · CP-GEN	May 10, 2021	May 11, 2021	—
Zoning review Planning · CP-ZOC	May 11, 2021	Feb 23, 2022	—
Building plan review Building Inspection · BLDG	May 11, 2021	Nov 5, 2021	—
Building plan review Building Inspection · BLDG	May 11, 2021	Jan 10, 2022	—
Mechanical and energy plan review Building Inspection · MECH	May 11, 2021	Feb 24, 2022	—
Fire prevention review Fire Department · SFFD	May 11, 2021	Feb 24, 2022	—
Street use and mapping Public Works · DPW-BSM	May 11, 2021	May 14, 2021	—
Urban forestry Public Works · DPW-BUF	May 11, 2021	May 14, 2021	—
Public Utilities Commission review Public Utilities · SFPUC	May 11, 2021	Jun 29, 2021	—
Street use and mapping Public Works · DPW-BSM	Jan 19, 2022	Jan 19, 2022	—
Public Utilities Commission review Public Utilities · SFPUC	Jan 19, 2022	Jan 21, 2022	—
Public Utilities Commission review Public Utilities · SFPUC	Feb 23, 2022	Feb 24, 2022	—
Zoning review Planning · CP-ZOC	Feb 23, 2022	Mar 30, 2022	—
Street use and mapping Public Works · DPW-BSM	Feb 24, 2022	Feb 24, 2022	—
Planning review Planning · CP-GEN	Mar 30, 2022	Jul 27, 2022	—
Development fee collection Building Inspection · DFCU	Jul 27, 2022	Jul 27, 2022	—
Permit Processing Center Building Inspection · PPC	Jul 27, 2022	Sep 26, 2022	—
Central Permit Bureau Building Inspection · CPB	Sep 26, 2022	Mar 7, 2023	—

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: Issued
Estimated cost: $72,672

People named on this permit

Only people we matched to a California license are listed.

Name	Role	License on permit
J Mastro	Architect	C-35515

Sources

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

Permit 202105100075 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 Jun 2025