Detached · Outer Richmond
428 15th Ave
In progress+1 unit on this lot2 permits
New detached ADU 1-story, type-vb, in rear yard (originally part of pa#202204071831).
filed Dec 2022issued Sep 2025 · permit wait 2 years 8 months1 year 2 months since issue
waiting for permitconstructionrelated building permitelectrical permitplumbing permit
Declared value
$75,000
declared on the ADU permit
Permit wait
2 years 8 months
filed → issued
Build time
in progress
issued → completed
Permits in this project
| Permit | What | When | Declared | |
|---|---|---|---|---|
| ADU permit | New detached ADU 1-story, type-vb, in rear yard (originally part of pa#202204071831). 202212309593 · Bianchi-Tillett Developers INC | filed Dec 2022 · issued Sep 2025 | $75k | city record |
| Electrical | Online electrical permit: 60 of buildings of 6 dwelling units or less. Temporary power. E202601148306 | Jan 14, 2026 | — |
1 other permit on this lot during the project, not counted
| Other | Revision to pa# 202204071831. Permeation grouting to stabilize subsoil, adjacent property work at 430 15th ave ref pa# 202606304326. Similarly the matt slab foundation along the property line with 426 15th ave, has been modified by the eor to avoid undermining. 202606304320 · Bianchi-Tillett Developers INC | filed Jun 2026 · issued Jul 2026 | $20k | city record |
Trade permits show what work was done and when; the city does not record who pulled them.
- Lot
- block 1530, lot 024
- Why we call it an ADU
- SF DBI flagged the permit as an ADU.