734 21st Ave, San Francisco
3 home-service permits on record at 734 21st Ave, San Francisco; the roof was last permitted on Nov 21, 2018 at a declared value of $10,777.
Home-service permits on record at this address
| Issued | Work | Trade | Declared value | Contractor as filed | Status | Permit |
|---|---|---|---|---|---|---|
| Sep 10, 2025 | otc alterations permit: full bathroom remodel like for like, all current fixtures to remain in current locations, all walls to remain, new electrical in bathroom only. no change to floor layout. no change to wall layout. no structural work | Electrical | $30,102 | — | Finaled Nov 25, 2025 | 202509105003 |
| May 7, 2025 | otc alterations permit: 50% bathroom remodel: new vanity, floor tile, new toilet and new electrical. everything in same location. no work in shower area | Electrical | $12,500 | — | Finaled Jul 14, 2025 | 202505075953 |
| Nov 21, 2018 | ReRoof: reroofing | Roofing | $10,777 | — | Finaled Dec 27, 2018 | 201811216597 |
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.