448 Duncan St, San Francisco
2 home-service permits on record at 448 Duncan St, San Francisco; the roof was last permitted on Nov 12, 2024 at a declared value of $2,000.
Home-service permits on record at this address
| Issued | Work | Trade | Declared value | Contractor as filed | Status | Permit |
|---|---|---|---|---|---|---|
| Nov 12, 2024 | otc alterations permit: revision to pa # 202407196934. changes include revising framing at rear roof and foundation replacement at line 3 | Roofing | $2,000 | — | Finaled Mar 26, 2025 | 202409241503 |
| Aug 15, 2024 | otc alterations permit: voluntary legalization of unwarranted rear 1-story bedroom and bathroom and deck and of unwarranted home office bath at rear of garage. at main level. renovation of bath, replace kitchen appliances and windows at rear replace whole house gas furnace and water heater. repainting exterior | Water heater | $300,000 | — | Finaled Mar 26, 2025 | 202407196934 |
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.