12 Blake St, San Francisco
1 home-service permit on record at 12 Blake St, San Francisco; the roof was last permitted on Dec 9, 2022 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 |
|---|---|---|---|---|---|---|
| Dec 9, 2022 | otc alterations permit: replace 5 existing windows on side and rear of property, 2 ext doors, reroofing, minor dry-rot with siding replacement in-kind for future paint project | Roofing | $30,000 | — | Finaled Nov 15, 2023 | 202212098046 |
On Blake St
15 permits on record on Blake St.
| Trade | Permits | Since Oct 2, 2024 | Median declared | Range | Last |
|---|---|---|---|---|---|
| Roofing | 10 | 1 | — | under 5 | May 21, 2026 |
| Plumbing | 3 | 1 | — | under 5 | Jul 2, 2025 |
| Heating and cooling | 1 | 1 | — | under 5 | Sep 26, 2025 |
| Water heater | 1 | 0 | — | under 5 | Feb 8, 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. This address is in that cohort. 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. 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 2, 2026. Owner names are not shown on any page.