Converted · ground-floor conversion · Outer Richmond
1921 Lake St
In progress+1 unit on this lot · now 57 permits
Addition of one (1) accessory dwelling unit per ordinance 162-16 to an existing four (4) unit building for total of five(5) units. The one(1) proposed dwelling unit is located within the existing building envelope at the 1st floor ref# 2020-0218-4716 for ab-094 seismic retrofit.
filed Feb 2020issued Sep 2024 · permit wait 4 years 7 months2 years 1 month since issue
waiting for permitconstructionrelated building permitelectrical permitplumbing permit
Declared value
$120,000
declared on the ADU permit
Permit wait
4 years 7 months
filed → issued
Build time
in progress
issued → completed
Permits in this project
| Permit | What | When | Declared | |
|---|---|---|---|---|
| ADU permit | Addition of one (1) accessory dwelling unit per ordinance 162-16 to an existing four (4) unit building for total of five(5) units. The one(1) proposed dwelling unit is located within the existing building envelope at the 1st floor ref# 2020-0218-4716 for ab-094 seismic retrofit. 202002245231 · Spectrum Development Company | filed Feb 2020 · issued Sep 2024 | $120k | city record |
| Electrical | Add new wiring and circuitry for ADU. Kitchen bath, laundry, bedroom corridor add new sub panel for house panel. E202512227897 | Dec 22, 2025 | — | |
| Plumbing | New drain waste, vent, gas piping for new laundry room, kitchen, bath room, rear yard area dran at ground floor. PP20251222509 | Dec 22, 2025 | — | |
| Plumbing | Provide new mechanical work for radiant hydronic baseboards, radiant tankless water heater and pump. PM20251222510 | Dec 22, 2025 | — | |
| Plumbing | Work category: 1p; decommission of the peerless 63-05 steam boiler, serial #652310-201012 along with backflow prevention assembly serial # a24751. Both items to be removed from city lists. PW20260417222 | Apr 17, 2026 → May 4, 2026 | — | |
| Plumbing | Install gree 18t btu wall mounted heat pump system in ADU. PM20260514055 | May 14, 2026 | — | |
| Plumbing | Work category: 4pa; provide and install new fire sprinkler system throughout ground floor only per nfpa 13 and new underground fire service per nfpa 24. PW20260617762 | Jun 17, 2026 | — |
1 other permit on this lot during the project, not counted
| Other | Recommencement and completion of work approved approved under pa #202002184716. 202511129341 · Spectrum Development Company | filed Nov 2025 · issued Nov 2025 | $50k | city record |
Trade permits show what work was done and when; the city does not record who pulled them.
- Lot
- block 1380, lot 037
- Why we call it an ADU
- SF DBI flagged the permit as an ADU.