2435 21st Ave, San Francisco
2 home-service permits on record at 2435 21st Ave, San Francisco; the roof was last permitted on Nov 30, 2023 at a declared value of $1.
Home-service permits on record at this address
| Issued | Work | Trade | Declared value | Contractor as filed | Status | Permit |
|---|---|---|---|---|---|---|
| Nov 30, 2023 | additions alterations or repairs: revision to pa# 201910083800. reduce the addition to single family dwelling by adding habitable space & roof deck @ 2nd floor level & reduce the addition to balcony @ 3rd floor level @ rear of the building | Roofing | $1 | — | issued | 202305047115 |
| Feb 25, 2022 | additions alterations or repairs: expansion of the sfd by adding habitable space & roof deck @ the 3rd floor level @ the rear of the building | Roofing | $576,000 | — | issued | 201910083800 |
On 21st Ave
281 permits on record on 21st Ave.
| Trade | Permits | Since Oct 5, 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 5,872 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.