3870 18th St, San Francisco
2 home-service permits on record at 3870 18th St, San Francisco; the roof was last permitted on Jul 9, 2026 at a declared value of $12,000.
Home-service permits on record at this address
| Issued | Work | Trade | Declared value | Contractor as filed | Status | Permit |
|---|---|---|---|---|---|---|
| Jul 9, 2026 | otc alterations permit: front building: to comply with nov# 202658496: replace front sliding door at 2/f, replace dry rotted deck boards and guard rails on roof deck with trex material, replace kitchen cabinets in kind, install new tiles in shower wall, install vinyl window in front 1/f, new flooring and paint | Roofing | $12,000 | — | Finaled Jul 15, 2026 | 202607094802 |
| Apr 21, 2016 | otc alterations permit: comply with nov 201606491. remove lattice at front roof. repair roof | Roofing | $2,000 | — | Finaled May 27, 2016 | 201604215419 |
On 18th St
231 permits on record on 18th St.
| Trade | Permits | Since Oct 7, 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 5,870 one- and two-family reroof permits since October 7, 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 $21,797. 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 294 one- and two-family heating and cooling permits since October 7, 2024, most declared values run from $31 to $228,385 (the middle 80%); the median is $25,998 and half fall between $5,125 and $120,000. 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 7, 2026. Owner names are not shown on any page.