3638 18th St, San Francisco
2 home-service permits on record at 3638 18th St, San Francisco; the roof was last permitted on Sep 22, 2026 at a declared value of $20,000.
Home-service permits on record at this address
| Issued | Work | Trade | Declared value | Contractor as filed | Status | Permit |
|---|---|---|---|---|---|---|
| Sep 22, 2026 | otc alterations permit: in-kind repairs of existing non complying accessory structure inccuping new roofing, siding,waterproofing. in-kind framing reparis, and 1 hr fire ratings at property unit 0 | Roofing | $20,000 | — | issued | 202608217014 |
| Sep 29, 2025 | ReRoof: re-roofing. no hot works unit 0 | Roofing | $14,000 | — | Finaled Oct 21, 2025 | 202509296296 |
On 18th St
231 permits on record on 18th St.
| Trade | Permits | Since Oct 13, 2024 | Median declared | Range | Last |
|---|---|---|---|---|---|
| Roofing | 125 | 23 | $16,700 | $12,270–$65,000 | Sep 22, 2026 |
| Electrical | 35 | 2 | — | under 5 | Jul 20, 2026 |
| Heating and cooling | 33 | 2 | — | under 5 | Jul 30, 2026 |
| Plumbing | 30 | 2 | — | under 5 | Jun 9, 2026 |
| Water heater | 7 | 1 | — | under 5 | Oct 5, 2026 |
| Solar | 1 | 0 | — | under 5 | Oct 16, 2017 |
Roof replacement cost in San Francisco
Across 5,765 one- and two-family reroof permits since October 13, 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 292 one- and two-family heating and cooling permits since October 13, 2024, most declared values run from $11 to $229,462 (the middle 80%); the median is $25,998 and half fall between $5,000 and $120,125. 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 13, 2026. Owner names are not shown on any page.