3947 Washington St, San Francisco
1 home-service permit on record at 3947 Washington St, San Francisco; the roof was last permitted on Apr 3, 2017 at a declared value of $1,100,000.
Home-service permits on record at this address
| Issued | Work | Trade | Declared value | Contractor as filed | Status | Permit |
|---|---|---|---|---|---|---|
| Apr 3, 2017 | additions alterations or repairs: construct staggered 3 story addition @ rear south of bldg. interior renovation. construct smal, nw corner addition @ 1st& 2nd fl. construct roof deck above 1st fl @ rear . widen 3rd fl lightwell @ west. new windows@ rear . combination of new replace in kind windows @ north facade | Roofing | $1,100,000 | — | Finaled Jun 27, 2019 | 201608185425 |
On Washington St
291 permits on record on Washington St.
| Trade | Permits | Since Oct 3, 2024 | Median declared | Range | Last |
|---|---|---|---|---|---|
| Roofing | 150 | 29 | $21,000 | $1–$90,000 | Jul 29, 2026 |
| Plumbing | 78 | 12 | $72,500 | $30,000–$194,856 | Aug 10, 2026 |
| Electrical | 30 | 11 | $30,000 | $1–$90,000 | Aug 14, 2026 |
| Heating and cooling | 26 | 2 | — | under 5 | Sep 26, 2025 |
| Water heater | 4 | 1 | — | under 5 | Mar 17, 2026 |
| Solar | 3 | 2 | — | under 5 | Jul 17, 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.