23 Mayfair Dr, San Francisco
1 home-service permit on record at 23 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 |
|---|---|---|---|---|---|---|
| Jan 31, 2023 | otc alterations permit: 2-3/flr unit # 21 & 23: relocate wsaher dryer, ventless electric dryer, add shower in half bath, add entrance to bath from 2nd bedroom | Electrical | $50,000 | — | Finaled May 30, 2023 | 202301301020 |
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.