420 Mason St, San Francisco
3 home-service permits on record at 420 Mason St, 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 |
|---|---|---|---|---|---|---|
| Feb 2, 2018 | sign - erect: erect non-electric single faced sign. install marquee/awning signage over entrance. details in plan. ** maher: n/a ** | Electrical | $3,000 | — | Finaled Jun 27, 2018 | 201711224676 |
| Feb 2, 2018 | sign - erect: erect electric, single faced sign. sign a per plans individual letter sets mounted on marquee reader board. ** maher: n/a ** | Electrical | $17,500 | — | Finaled Jun 27, 2018 | 201711224673 |
| Feb 2, 2018 | sign - erect: erect non-electric, double faced sign. install non-illuminated hanging sign from marquee . details in plans. ** maher: n/a ** | Electrical | $1,000 | — | Finaled Jun 27, 2018 | 201711224670 |
On Mason St
146 permits on record on Mason St.
| Trade | Permits | Since Oct 4, 2024 | Median declared | Range | Last |
|---|---|---|---|---|---|
| Roofing | 74 | 10 | $17,950 | $6,300–$45,510 | Aug 17, 2026 |
| Plumbing | 30 | 6 | $46,010 | $5,000–$82,500 | 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 5,889 one- and two-family reroof permits since October 4, 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 $21,760. 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 291 one- and two-family heating and cooling permits since October 4, 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. 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 4, 2026. Owner names are not shown on any page.