4106 20th St, San Francisco
2 home-service permits on record at 4106 20th St, San Francisco; the roof was last permitted on Jan 28, 2026 at a declared value of $14,000.
Home-service permits on record at this address
| Issued | Work | Trade | Declared value | Contractor as filed | Status | Permit |
|---|---|---|---|---|---|---|
| Jul 6, 2026 | solar permit: installing 17 solar pv modules, 440 watts per module, total no. of rating 7.48 kw. mounted: roof, ballasted: n, including 2 energy storage unit, with 13.5 kwh each in capacity, ess units will not be closer than 3 feet | installation of roof-mounted utili | Solar | $46,561 | — | issued | S20260514610 |
| Jan 28, 2026 | ReRoof: re-roofing: remove and replace roofing material / existing roofing material | Roofing | $14,000 | — | Finaled Feb 6, 2026 | 202601284772 |
On 20th St
230 permits on record on 20th St.
| Trade | Permits | Since Oct 3, 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 5,896 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.