931 Hayes St, San Francisco
2 home-service permits on record at 931 Hayes St, San Francisco; the roof was last permitted on Mar 29, 2018 at a declared value of $30,000.
Home-service permits on record at this address
| Issued | Work | Trade | Declared value | Contractor as filed | Status | Permit |
|---|---|---|---|---|---|---|
| Mar 29, 2018 | otc alterations permit: floor plan changes on all floors. add bedroom on 1st floor. relocate office on 3rd floor. washer/dryer stackables on 2nd and 3rd floors. relocatde roof dormer. ref pa #201708316569. fire under separate permits n/a for maher | Roofing | $30,000 | — | Finaled Apr 11, 2018 | 201803224300 |
| Aug 23, 2017 | additions alterations or repairs: demo roof in the rear to construct a 381 sf ft roof deck. remove rear exterior staircase | Roofing | $15,000 | — | Finaled Apr 11, 2018 | 201706270502 |
On Hayes St
197 permits on record on Hayes St.
| Trade | Permits | Since Oct 4, 2024 | Median declared | Range | Last |
|---|---|---|---|---|---|
| Roofing | 90 | 14 | $22,200 | $8,150–$94,600 | May 14, 2026 |
| Plumbing | 45 | 4 | — | under 5 | Apr 10, 2026 |
| Electrical | 39 | 1 | — | under 5 | Apr 23, 2026 |
| Heating and cooling | 14 | 0 | — | under 5 | Dec 6, 2023 |
| Water heater | 7 | 2 | — | under 5 | Aug 26, 2025 |
| Solar | 2 | 0 | — | under 5 | Mar 1, 2018 |
Roof replacement cost in San Francisco
Across 5,889 one- and two-family reroof permits since October 4, 2024, most declared values run from $7,650 to $32,000 (the middle 80%); the median is $15,000 and half fall between $10,800 and $21,760. 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 4, 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 4, 2026. Owner names are not shown on any page.