Converted · ground-floor conversion · Outer Richmond
558 21st Ave
Completed Nov 2024+1 unit on this lot · now 611 permits
Add unit per ordinance# 30-15. Add unit# 6 with (1) bedroom, (1) full bath, (1) kitchen & laundry on 1st floor per plan. Ref pa# 201506098552.
filed Apr 2016issued Nov 2021 · permit wait 5 years 8 monthscompleted Nov 2024 · built in 3 years
waiting for permitconstructionrelated building permitelectrical permitplumbing permit
Declared value
$128,000
declared across 3 permits: the ADU permit plus its sub-permits
Permit wait
5 years 8 months
filed → issued
Build time
3 years
issued → completed
Builder
Chow Wing ConstructionAlso on this project: Hong Wei Construction INC, Crime Watch Security Sys Llc
Permits in this project
| Permit | What | When | Declared | |
|---|---|---|---|---|
| ADU permit | Add unit per ordinance# 30-15. Add unit# 6 with (1) bedroom, (1) full bath, (1) kitchen & laundry on 1st floor per plan. Ref pa# 201506098552. 201604053974 · Chow Wing Construction | filed Apr 2016 · issued Nov 2021 · done Nov 2024 | $100k | city record |
| Sprinklers | Install new fire sprinkler system throughout g/f per nfpa13 2016 including 2" dedicated fire service per nfpa24 off 8" main on 21st ave. Building pa# 201604053974. 202201276751 · cites 201604053974 · Hong Wei Construction INC | filed Jan 2022 · issued Jan 2022 · done May 2024 | $13k | city record |
| Sprinklers | Upgrade existing fire alarm system to comply with sffc section 1103. 7. 6. 1 and include sprinkler monitoring. Ref sprinkler pa# 202201276751. Ref pa# 201604053974. 202206025465 · cites 201604053974 · Crime Watch Security Sys Llc | filed Jun 2022 · issued Jun 2022 · done May 2024 | $15k | city record |
| Sprinklers | Revision to 202201276751 change underground pipe location for sffd sprinkler system. 202310128579 · Hong Wei Construction INC | filed Oct 2023 · issued Oct 2023 · done May 2024 | — | city record |
| Revision | As-built 202201276751 per plumbing inspector's requirement change riser detail backflow. Ref ADU 201604053974. 202405101901 · cites 201604053974 · Hong Wei Construction INC | filed May 2024 · issued May 2024 · done Nov 2024 | — | city record |
| Electrical | Unit #6. Plugs, lights, fans, 200a service. E202112107278 | Dec 10, 2021 → Apr 30, 2024 | — | |
| Electrical | Modification of an existing fire alarm system by upgrading the fire panel, update all existing devices to be compatible with new facp, add monitor modules to monitor all sprinkler water flow and tamper devices, and provide low frequency sounders in all sleeping areas to meet 75db at pillow to comply with sffd bulletin 1103. 7. 6. 1. EW202205063320 | May 6, 2022 → May 6, 2024 | — | |
| Electrical | Amendment to e202112107278. Increase service upgrade from 200 amp to 400 amps. E202206291004 | Jun 29, 2022 → Mar 6, 2024 | — | |
| Plumbing | Work category: 4pa; install new fire sprinkler system on ground floor per nfpa-13/with new 2'' service and underground pipe. PW20230606586 | Jun 6, 2023 → May 10, 2024 | — | |
| Plumbing | Unit#6 - bathroom fan and kitchen fan ref# pm20211210945. PM20240223475 | Feb 23, 2024 → Apr 26, 2024 | — | |
| Plumbing | Unit#6 - 1 kitchen, bathroom, and 1 water heater, water furnace ref# pp20211210944. PP20240223474 | Feb 23, 2024 → Apr 26, 2024 | — |
1 other permit on this lot during the project, not counted
| Other | Replace existing footing with new concrete footing in the 1st floor. 202112295156 · Chow Wing Construction | filed Dec 2021 · issued Jan 2022 · done Nov 2024 | $8,000 | city record |
These permits also cite 201506098552, which the city filed before our records begin.
Trade permits show what work was done and when; the city does not record who pulled them.
- Lot
- block 1563, lot 028
- Why we call it an ADU
- SF DBI flagged the permit as an ADU.