9 Mayfair Dr, San Francisco
1 home-service permit on record at 9 Mayfair Dr, San Francisco; no roofing permit on record.
Home-service permits on record at this address
| Issued | Work | Trade | Declared value | Contractor as filed | Status | Permit |
|---|---|---|---|---|---|---|
| Nov 3, 2023 | otc alterations permit: proposed new deck platform to access the backyard at 2nd fl with new sliding door. at 1st fl modify existing exterior stair to comply with todays code and easy to access the upper back yard. relocated existing furnace to 2nd and 3rd fls. no change of existing building envelope at front facade | Heating and cooling | $18,000 | — | Finaled Oct 3, 2024 | 202310209124 |
On Mayfair Dr
4 permits on record on Mayfair Dr.
| Trade | Permits | Since Oct 2, 2024 | Median declared | Range | Last |
|---|---|---|---|---|---|
| Roofing | 1 | 1 | — | under 5 | Jan 21, 2026 |
| Solar | 1 | 1 | — | under 5 | Feb 18, 2026 |
| Heating and cooling | 1 | 0 | — | under 5 | Nov 3, 2023 |
| Electrical | 1 | 0 | — | under 5 | Jan 31, 2023 |
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. 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. 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.