491 31st Ave, San Francisco
2 home-service permits on record at 491 31st Ave, San Francisco; the roof was last permitted on Jan 11, 2016 at a declared value of $6,133,912.
Home-service permits on record at this address
| Issued | Work | Trade | Declared value | Contractor as filed | Status | Permit |
|---|---|---|---|---|---|---|
| Aug 10, 2026 | otc alterations permit: scope related to fire and water damage that occured in units 407, 307, 304 and 204 only. work includes interior finishes, doors, and electrical work. all work will be replaced like for like approach. to comply with nov's 202649157 & 202655176 | Electrical | $150,000 | — | issued | 202607295718 |
| Jan 11, 2016 | additions alterations or repairs: moh rad priority permit. per sheet a0.01. new windows, interior upgrades, accessibility upgrades, roofing replacement. ext trim replacement, ext paint, minor structural, repair, unit kitchen replacement in kind | Roofing | $6,133,912 | — | Finaled Jul 28, 2017 | 201503060175 |
On 31st Ave
223 permits on record on 31st Ave.
| Trade | Permits | Since Oct 3, 2024 | Median declared | Range | Last |
|---|---|---|---|---|---|
| Roofing | 181 | 44 | $15,360 | $8,226–$24,700 | Aug 13, 2026 |
| Electrical | 13 | 3 | — | under 5 | Aug 10, 2026 |
| Plumbing | 12 | 2 | — | under 5 | Aug 6, 2026 |
| Heating and cooling | 8 | 1 | — | under 5 | Jan 29, 2025 |
| Water heater | 7 | 3 | — | under 5 | Sep 28, 2026 |
| Solar | 2 | 2 | — | under 5 | Mar 2, 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. 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. 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.