4319 21st St, San Francisco
3 home-service permits on record at 4319 21st St, San Francisco; the roof was last permitted on Aug 8, 2023 at a declared value of $15,000.
Home-service permits on record at this address
| Issued | Work | Trade | Declared value | Contractor as filed | Status | Permit |
|---|---|---|---|---|---|---|
| Mar 20, 2025 | additions alterations or repairs: 1st flr: 1-story horizontal addition in rear yard w/ bedroom & bath. turn bathroom into laundry room. relocate water heater & furnace to garage. at 2nd flr: roof deck above addition w/ stairs down to rear yard | Water heater | $339,428 | — | issued | 202211227066 |
| Aug 8, 2023 | otc alterations permit: revision to pa# 202210114114 to include changes during construction, at roof-remove skylights from scope of work; at 3flr-remodel hall bathroom, change fixture locations; change size of new windows at bedrm #2 facing rear yard; reconfigure walls at wall-in-closet | Roofing | $15,000 | — | Finaled Sep 25, 2023 | 202304256385 |
| Nov 8, 2022 | otc alterations permit: 3rd fl: devide front bedroom into 2 bedrooms. add bath. 3 new windows facing rear. 2 new skylights. new heat pump. no work on front facade | Heating and cooling | $40,000 | — | Finaled Sep 25, 2023 | 202210114114 |
On 21st St
181 permits on record on 21st St.
| Trade | Permits | Since Oct 3, 2024 | Median declared | Range | Last |
|---|---|---|---|---|---|
| Roofing | 123 | 21 | $15,000 | $10,000–$257,293 | Jun 18, 2026 |
| Plumbing | 21 | 2 | — | under 5 | Mar 27, 2026 |
| Electrical | 16 | 4 | — | under 5 | Sep 29, 2026 |
| Heating and cooling | 10 | 4 | — | under 5 | Mar 23, 2026 |
| Water heater | 8 | 2 | — | under 5 | Jun 18, 2026 |
| Solar | 3 | 0 | — | under 5 | May 8, 2024 |
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.