1800 Mason St, San Francisco
2 home-service permits on record at 1800 Mason St, San Francisco; the roof was last permitted on Oct 26, 2018 at a declared value of $20,158.
Home-service permits on record at this address
| Issued | Work | Trade | Declared value | Contractor as filed | Status | Permit |
|---|---|---|---|---|---|---|
| Sep 4, 2025 | otc alterations permit: install electrical oven w/ self contained ventless hood into basement of property. oven will be hard wired to panel, oven is ul certified & has all neccessary hvac capabilities self contained, oven-moffat e32d5-2t tuebo fan 220-240v, 1 phase, 6.5 kw. ventless hood moffat ovh 32d turbofan | Heating and cooling | $15,000 | — | Finaled Mar 12, 2026 | 202509034479 |
| Oct 26, 2018 | ReRoof: reroofing | Roofing | $20,158 | — | Finaled Jun 7, 2019 | 201810264290 |
On Mason St
147 permits on record on Mason St.
| Trade | Permits | Since Oct 15, 2024 | Median declared | Range | Last |
|---|---|---|---|---|---|
| Roofing | 75 | 11 | $20,000 | $7,000–$60,000 | Oct 9, 2026 |
| Plumbing | 30 | 5 | $29,720 | $4,400–$84,920 | Mar 16, 2026 |
| Electrical | 21 | 3 | — | under 5 | Jun 10, 2026 |
| Heating and cooling | 14 | 1 | — | under 5 | Sep 4, 2025 |
| Solar | 4 | 1 | — | under 5 | Feb 12, 2025 |
| Water heater | 3 | 0 | — | under 5 | Mar 6, 2024 |
Roof replacement cost in San Francisco
Across 5,756 one- and two-family reroof permits since October 15, 2024, most declared values run from $7,650 to $32,000 (the middle 80%); the median is $15,000 and half fall between $10,800 and $21,900. 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 294 one- and two-family heating and cooling permits since October 15, 2024, most declared values run from $31 to $247,000 (the middle 80%); the median is $26,000 and half fall between $5,125 and $124,285. 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 15, 2026. Owner names are not shown on any page.