4147 20th St, San Francisco
3 home-service permits on record at 4147 20th St, San Francisco; no roofing permit on record.
Home-service permits on record at this address
| Issued | Work | Trade | Declared value | Contractor as filed | Status | Permit |
|---|---|---|---|---|---|---|
| Nov 30, 2023 | otc alterations permit: unit 4147 20th st: new windows and new doors . plumbing and electrical as required by above scope. revison to bathroom, kitchen, and dining area | Plumbing | $136,000 | — | issued | 202309196912 |
| Sep 14, 2023 | otc alterations permit: 1st fl bedroom addition & sitting area on ground fl within envelope for unit 4145 20th st. 2nd fl bathroom addition, renovation of bedroom at 4145 20th st. eletrical & plumbing as req | Plumbing | $200,000 | — | issued | 202308235055 |
| Jan 27, 2015 | otc alterations permit: upgrade main electric service to 100 amp unit #4145-4147 20th street. new subpanel in garage, remodel kitchen, bathroom, install new washer and dryer hookup in bathroom, convert bathtub to shower, update electrical for kitchen and bathroom. interior remodel in 4147 20th street | Electrical | $50,000 | — | issued | 201501276803 |
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. 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. 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.