844 Duncan St, San Francisco
2 home-service permits on record at 844 Duncan St, San Francisco; the roof was last permitted on Oct 30, 2017 at a declared value of $35,000.
Home-service permits on record at this address
| Issued | Work | Trade | Declared value | Contractor as filed | Status | Permit |
|---|---|---|---|---|---|---|
| Sep 30, 2019 | otc alterations permit: replace cabinets and finishes in kitchen and 3 bathrooms. no change to plumbing layouts | Plumbing | $120,000 | — | Finaled Feb 22, 2021 | 201909303017 |
| Oct 30, 2017 | otc alterations permit: modify approved permit 201510028711 with changes to a2.1. add wine cellar, widen entry door and sidelites. 1st fl- a2.2, move e fireplace, increase window size in bedrm 2 and 3, add 10" deep picture balcony, a2.3 relocate m bath, add new bath, take out e roof in front, extend deck to part of | Roofing | $35,000 | — | Finaled Aug 3, 2018 | 201710191670 |
On Duncan St
130 permits on record on Duncan St.
| Trade | Permits | Since Oct 3, 2024 | Median declared | Range | Last |
|---|---|---|---|---|---|
| Roofing | 97 | 16 | $15,875 | $7,250–$61,600 | Jul 23, 2026 |
| Plumbing | 21 | 4 | — | under 5 | Jul 16, 2026 |
| Electrical | 5 | 0 | — | under 5 | Jun 29, 2021 |
| Heating and cooling | 4 | 0 | — | under 5 | May 9, 2018 |
| Water heater | 2 | 0 | — | under 5 | Aug 15, 2024 |
| Solar | 1 | 1 | — | under 5 | Feb 13, 2026 |
Roof replacement cost in San Francisco
Across 5,896 one- and two-family reroof permits since October 3, 2024, most declared values run from $7,650 to $32,000 (the middle 80%); the median is $15,000 and half fall between $10,788 and $21,763. The lowest on record is $1 and the highest $4,315,170. This address is in that cohort. Every permit behind that range.
Furnace, heat pump or air conditioner replacement cost in San Francisco
Across 291 one- and two-family heating and cooling permits since October 3, 2024, most declared values run from $1 to $224,616 (the middle 80%); the median is $25,196 and half fall between $5,000 and $116,433. The lowest on record is $1 and the highest $1,600,000. This address is in that cohort. Every permit behind that range.
Source
San Francisco Department of Building Inspection, via DataSF, pulled nightly; the assessor roll for the property fields. As of October 3, 2026. Owner names are not shown on any page.