40 21st Ave, San Francisco
2 home-service permits on record at 40 21st Ave, San Francisco; the roof was last permitted on Sep 1, 2015 at a declared value of $4,200.
Home-service permits on record at this address
| Issued | Work | Trade | Declared value | Contractor as filed | Status | Permit |
|---|---|---|---|---|---|---|
| Jul 16, 2025 | otc alterations permit: in-kind remodeling of 2 bathroom in 2nd fl, 3rd fl with 0 shower pan . alteration of service equipment. need a "green tag" for electrical service equipment | Electrical | $86,400 | — | Finaled Jan 28, 2026 | 202507160993 |
| Sep 1, 2015 | ReRoof: reroofing | Roofing | $4,200 | — | issued | 201509015790 |
On 21st Ave
281 permits on record on 21st Ave.
| Trade | Permits | Since Oct 3, 2024 | Median declared | Range | Last |
|---|---|---|---|---|---|
| Roofing | 223 | 49 | $15,000 | $8,770–$28,000 | Jun 18, 2026 |
| Plumbing | 24 | 4 | — | under 5 | Feb 4, 2026 |
| Electrical | 15 | 5 | $45,215 | $19,541–$394,379 | Aug 26, 2026 |
| Water heater | 11 | 3 | — | under 5 | Sep 18, 2025 |
| Heating and cooling | 6 | 1 | — | under 5 | Sep 11, 2026 |
| Solar | 2 | 1 | — | under 5 | Aug 25, 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.