66 Williams Ave, San Francisco
2 home-service permits on record at 66 Williams Ave, San Francisco; the roof was last permitted on Feb 26, 2026 at a declared value of $10,000.
Home-service permits on record at this address
| Issued | Work | Trade | Declared value | Contractor as filed | Status | Permit |
|---|---|---|---|---|---|---|
| Feb 26, 2026 | ReRoof: reroofing: tear off current roofing materials. install new shingles. no hot works | Roofing | $10,000 | — | Finaled Mar 16, 2026 | 202602266614 |
| Feb 5, 2026 | otc alterations permit: 2nd floor kitchen remodel in-kind. install led ceiling lights, install electrical sub-panel. no structure work. repair drywall inside | Electrical | $30,000 | — | Finaled May 7, 2026 | 202602055271 |
On Williams Ave
15 permits on record on Williams Ave.
| Trade | Permits | Since Oct 3, 2024 | Median declared | Range | Last |
|---|---|---|---|---|---|
| Roofing | 13 | 1 | — | under 5 | Feb 26, 2026 |
| Electrical | 2 | 1 | — | under 5 | Feb 5, 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.