3934 18th St, San Francisco
2 home-service permits on record at 3934 18th St, San Francisco; the roof was last permitted on Aug 21, 2023 at a declared value of $8,800.
Home-service permits on record at this address
| Issued | Work | Trade | Declared value | Contractor as filed | Status | Permit |
|---|---|---|---|---|---|---|
| Aug 21, 2023 | ReRoof: reroofing, hot mop, new modified bitumen, heat weld, 12-squares | Roofing | $8,800 | — | issued | 202308184738 |
| Jan 16, 2015 | otc alterations permit: replace two windows & two doors at the rear. remove section of the drywall to assess for dry-rot in dinning room. repair dry-rot as need-it. replace water proof membrune on upper deck. replace small section of roof shingles above the bay window & install a new gutter | Roofing | $12,000 | — | Finaled Feb 19, 2015 | 201501166005 |
On 18th St
230 permits on record on 18th St.
| Trade | Permits | Since Oct 2, 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 | 6 | 0 | — | under 5 | Feb 2, 2022 |
| Solar | 1 | 0 | — | under 5 | Oct 16, 2017 |
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.