3984 20th St, San Francisco
2 home-service permits on record at 3984 20th St, San Francisco; the roof was last permitted on Nov 23, 2015 at a declared value of $25,000.
Home-service permits on record at this address
| Issued | Work | Trade | Declared value | Contractor as filed | Status | Permit |
|---|---|---|---|---|---|---|
| Nov 23, 2015 | otc alterations permit: new roof deck & new exterior spiral stairs | Roofing | $25,000 | — | Finaled Nov 9, 2016 | 201511233312 |
| Jan 14, 2015 | additions alterations or repairs: vertical addition: new 2nd story with roof deck, 2 new bedrooms, 2 new baths, 1 kitchen remodel. replace foundations & seismic upgrade. convert storage area @ garage into habitable space. interior remodel of dwelling | Roofing | $480,000 | — | Finaled Nov 10, 2016 | 201307091387 |
On 20th St
230 permits on record on 20th St.
| Trade | Permits | Since Oct 5, 2024 | Median declared | Range | Last |
|---|---|---|---|---|---|
| Roofing | 127 | 28 | $20,250 | $7,428–$48,320 | 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 5,872 one- and two-family reroof permits since October 5, 2024, most declared values run from $7,655 to $32,000 (the middle 80%); the median is $15,000 and half fall between $10,800 and $21,792. 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 5, 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 5, 2026. Owner names are not shown on any page.