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31 Middlefield Dr

San Francisco permit 202610099273 · Sunset/Parkside

AdditionOver-the-counter, with plansIssued
Street view · Mar 2019
Google Street View of 31 Middlefield Dr, Mar 2019
Scope of work
As written on the permit application.

1st fl. add 2 bedrooms, 2 full bath and media room. 2nd fl. remodel kitchen and bathroom, add 1 full bath replace front window with in-kind (vinyl), infill ligthwell, rear addition, new deck at rear, replace new garage door (wood). subject to ab-112.

Timeline
Key dates from the city record.
Filed
Oct 9, 2026
Issued
Nov 2, 2026 (within 1 month of filing)
Completed
Not completed yet

For comparison, San Francisco permits with the same review (over-the-counter, with plans) filed in 2026 were typically issued within 1 month (median of 3,682 issued permits).

City plan review
Each review stop the plans went through, from the city's routing record.
Review stops
11 stops across 4 departments
Comments issued
3 times, by Building Inspection
Review stopFinishedResult

Intake

Building Inspection · INTAKE

Oct 9, 2026Administrative

Zoning review

Planning · CP-ZOC

Oct 9, 2026Approved

Building plan review

Building Inspection · BLDG

Oct 9, 2026Issued Comments

Mechanical and energy plan review

Building Inspection · MECH

Oct 9, 2026Issued Comments

Mechanical and energy plan review

Building Inspection · MECH

Oct 14, 2026Approved

Electrical plan review

Building Inspection · MECH-E

Oct 14, 2026Issued Comments

Building plan review

Building Inspection · BLDG

Oct 21, 2026Approved

Electrical plan review

Building Inspection · MECH-E

Oct 21, 2026Approved

Public Utilities Commission review

Public Utilities · SFPUC

Oct 21, 2026Approved

Fire prevention review

Fire Department · SFFD

Oct 23, 2026Approved

Central Permit Bureau

Building Inspection · CPB

Nov 2, 2026Administrative

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
Issued
Estimated cost
$303,000
People named on this permit
Only people we matched to a California license are listed.
NameRoleLicense on permit
Jingbo YangEngineer65547
Sources
Everything on this page comes from public records. Check them yourself.
Permit 202610099273 on the city's permit tracking site

San Francisco Department of Building Inspection, the official record