Converted · ground-floor conversion · Castro/Upper Market
551 Duboce Ave
Completed Oct 2025+1 unit on this lot · now 1010 permits
Convert existing space at first floor to accessory studio dwelling unit per ord# 162-16.
filed Apr 2019issued Jul 2023 · permit wait 4 years 3 monthscompleted Oct 2025 · built in 2 years 3 months
waiting for permitconstructionrelated building permitelectrical permitplumbing permit
Declared value
$142,296
declared across 4 permits: the ADU permit plus its sub-permits
Permit wait
4 years 3 months
filed → issued
Build time
2 years 3 months
issued → completed
Permits in this project
| Permit | What | When | Declared | |
|---|---|---|---|---|
| ADU permit | Convert existing space at first floor to accessory studio dwelling unit per ord# 162-16. 201904269071 · T N Building INC | filed Apr 2019 · issued Jul 2023 · done Oct 2025 | $110k | city record |
| Sprinklers | Install (24) new sprinklers throughout ground floor per nfpa#13, underground per nfpa#24. Ref bap#201904269071 & 201809200916. 202308023531 · cites 201904269071 · P P Plumbing | filed Aug 2023 · issued Aug 2023 | $22k | city record |
| Related permit | Tenant improvement fire alarm due to new ADU in basement. Monitor modules & horn strobes. Facp, aes, smoke detector, pull station, & monitor modules to be relocated. Install lf sounder strobe in ADU units potential sleep area to comply with sffd 1103. 7. 6. 1. Ref pa 202306230762 & 201904269071. 202404240652 · cites 201904269071 · San Francisco Fire Protection | filed Apr 2024 · issued Apr 2024 · done Sep 2025 | $4,247 | city record |
| Related permit | As built change ref to pa# 202404240652: per inspector notes correct model of the wireless communicator, added a remote power supply near the facu, added 2 batteries to remote power supply. 202507231451 · San Francisco Fire Protection | filed Jul 2025 · issued Jul 2025 · done Aug 2025 | $6,178 | city record |
| Address | Addressing permit only: purpose of this permit is to create the address 8 walter st. Ref pa #201904269071. Sub addresses for 551 ( units 1, 2 & 3), 553 ( units 5, 6 & 8) 555 ( units 9, 10 & 12) duboce ave are to be registered on this permit as well. 202606153178 · cites 201904269071 | filed Jun 2026 · issued Jun 2026 · done Jun 2026 | — | city record |
| Electrical | Wire new ADU studio. To include kitchen, bathroom and living/sleeping area. Please note this unit will eventually be numbered as # 8 walter st. EW202309073661 | Sep 7, 2023 → Sep 26, 2025 | — | |
| Electrical | Replace fire alarm system to comply sffc sec 1103. 7. 6. 1 replace exist facp with new fire alarm control unit. Install new aes radio comm, smk detect, manual pulls, monitoring mod to monitor aes radio, install lf sounds in all existing & add. New units. EW202309083712 | Sep 8, 2023 → Sep 19, 2025 | — | |
| Plumbing | 1 shower pan. PP20230821559 | Aug 21, 2023 → Jan 10, 2024 | — | |
| Plumbing | Work category: 4pa; install fire sprinkler system ground floor. Approximately 23 heads. PW20230830782 | Aug 30, 2023 → Apr 17, 2024 | — | |
| Plumbing | Work category: 2pb; renew permit #pw20230112919. PW20240414062 | Apr 14, 2024 → Apr 17, 2024 | — |
These permits also cite 201809200916, 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 3538, lot 058
- Why we call it an ADU
- SF DBI flagged the permit as an ADU.