3936 20th St, San Francisco
2 home-service permits on record at 3936 20th St, San Francisco; the roof was last permitted on Jun 7, 2022 at a declared value of $175,000.
Home-service permits on record at this address
| Issued | Work | Trade | Declared value | Contractor as filed | Status | Permit |
|---|---|---|---|---|---|---|
| Jun 7, 2022 | otc alterations permit: construct roof dormer on roof install roofishingles on roof, replace 4 windows in window openings remove bathtub & install bath tub, install bath room vanites, install shower pan in shower refinish wd flrs, replace front porcu flr. with tile | Roofing | $175,000 | — | Finaled Sep 11, 2024 | 202205194597 |
| Oct 11, 2019 | additions alterations or repairs: alter site. revision to pa# 2015/05/06/5527-s, issued on 12/27/2016. reduction of scope to eliminate construction of 3rd floor. project is: raise house 5'-0", new 1st floor, new stair from 1st to 3rd with new dormer on west side of roof | Roofing | $1 | — | cancelled | 201905070029 |
On 20th St
230 permits on record on 20th St.
| Trade | Permits | Since Oct 2, 2024 | Median declared | Range | Last |
|---|---|---|---|---|---|
| Roofing | 127 | 29 | $20,000 | $7,452–$43,880 | Sep 8, 2026 |
| Plumbing | 38 | 2 | — | under 5 | Aug 13, 2026 |
| Electrical | 29 | 5 | $20,000 | $7,800–$49,380 | Sep 4, 2026 |
| Heating and cooling | 20 | 2 | — | under 5 | Jan 7, 2026 |
| Solar | 8 | 5 | $32,176 | $13,027–$48,594 | Jul 6, 2026 |
| Water heater | 8 | 3 | — | under 5 | Jun 8, 2026 |
Roof replacement cost in San Francisco
Across 5,921 one- and two-family reroof permits since October 2, 2024, most declared values run from $7,700 to $32,000 (the middle 80%); the median is $15,000 and half fall between $10,800 and $21,770. 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 292 one- and two-family heating and cooling permits since October 2, 2024, most declared values run from $1 to $224,154 (the middle 80%); the median is $25,098 and half fall between $5,000 and $115,240. 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 2, 2026. Owner names are not shown on any page.