Attached · Noe Valley
561 Duncan St
Completed Nov 2025+1 unit on this lot · now 29 permits
Interior remodel and rear horizontal & vertical expansion, add a new dwelling unit.
filed Feb 2020issued Nov 2021 · permit wait 1 year 8 monthscompleted Nov 2025 · built in 4 years
waiting for permitconstructionrelated building permitelectrical permitplumbing permit
Declared value
$803,490 + other work
the permit also covers work unrelated to the ADU, so this is not an ADU price
Permit wait
1 year 8 months
filed → issued
Build time
4 years
issued → completed
Permits in this project
| Permit | What | When | Declared | |
|---|---|---|---|---|
| ADU permit | Interior remodel and rear horizontal & vertical expansion, add a new dwelling unit. 202002285791 · Alex Builder INC | filed Feb 2020 · issued Nov 2021 · done Nov 2025 | $750k | city record |
| Sprinklers | Install of 40 new sprinkler system throughout the building per pa 202002285791 per nfpa 13d 2022 and underground pipe per nfpa 24 (trench backfill and side walk repair by separate permit). 202412066333 · cites 202002285791 · Project Contractor INC | filed Dec 2024 · issued Dec 2024 · done Aug 2025 | $33k | city record |
| Revision | Revision to 202002285791. 1/f added new laundry room, 2/f change powder room layout. 3/f laundry room and bathrom layout change. 202511079176 · cites 202002285791 · Alex Builder INC | filed Nov 2025 · issued Nov 2025 · done Nov 2025 | $20k | city record |
| Electrical | Re-wire entire home. Remodel kitchen, bathroom & hallway area. 100 lights, 40 switches, 60 receptacles. E202405284629 | May 28, 2024 → Oct 31, 2025 | — | |
| Electrical | 1/f: laundry room. 2/f: change powder room layout. 3/f: laundry room and bath layout change. E202511076981 | Nov 7, 2025 | — | |
| Plumbing | Work category: 8p; installation of radiant heat system at all 3 levels of the residence with a single combo boiler installed to supply for the radiant heat. PW20241001002 | Oct 1, 2024 → Sep 9, 2025 | — | |
| Plumbing | Ref to fire sprinkler pa 202412066333: total 40 sprinkler heads, trench back fill & side walk repair by separate permit by other. PP20241206430 | Dec 6, 2024 → Aug 22, 2025 | — | |
| Plumbing | Renewal of permit# pp20240528036 (original scope: remodel 4 full bathrooms & 2 restrooms. 3 shower pans. ) to obtain final inspection. PP20250829443 | Aug 29, 2025 → Sep 9, 2025 | — | |
| Plumbing | New laundry room. Bathroom layout reconfiguration. PP20251107732 | Nov 7, 2025 | — |
1 other permit on this lot during the project, not counted
| Other | New 2 retaining walls to create concrete patio at rear yard. 202411225598 · Alex Builder INC | filed Nov 2024 · issued Dec 2024 · done Nov 2025 | $10k | city record |
Trade permits show what work was done and when; the city does not record who pulled them.
- Lot
- block 6603, lot 031
- Why we call it an ADU
- Two independent model reviewers agreed the permit creates an ADU: “"interior remodel and rear horizontal & vertical expansion, add a new dwelling unit." — units 1 → 2; use 1 family dwelling → 2 family dwelling”