840 Union St, San Francisco
2 home-service permits on record at 840 Union St, San Francisco; the roof was last permitted on Sep 20, 2017 at a declared value of $8,540.
Home-service permits on record at this address
| Issued | Work | Trade | Declared value | Contractor as filed | Status | Permit |
|---|---|---|---|---|---|---|
| Sep 20, 2017 | additions alterations or repairs: generally includes the expanson of an existing roof deck | Roofing | $8,540 | — | issued | 201612205433 |
| Mar 15, 2016 | otc alterations permit: revision to app#201109063947 s/1: 1) site wall revision to leave a portion of extg wall for v.e. 2) the depressed framing of the shower area has been revised. 3) the roof structure on the 3rd floor has been upgraded. 4) the stair landing at the 3rd floor has been revised to a steel plate | Roofing | $1 | — | Finaled May 2, 2018 | 201603091587 |
On Union St
377 permits on record on Union St.
| Trade | Permits | Since Oct 2, 2024 | Median declared | Range | Last |
|---|---|---|---|---|---|
| Roofing | 195 | 32 | $20,520 | $5,450–$160,640 | Aug 12, 2026 |
| Plumbing | 75 | 18 | $32,332 | $140–$108,778 | Aug 19, 2026 |
| Electrical | 67 | 9 | $25,000 | $7,400–$332,614 | Aug 31, 2026 |
| Heating and cooling | 27 | 3 | — | under 5 | Jan 26, 2026 |
| Water heater | 9 | 2 | — | under 5 | Apr 2, 2026 |
| Solar | 4 | 2 | — | under 5 | Apr 9, 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. This address is in that cohort. 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. 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 2, 2026. Owner names are not shown on any page.