641 18th Ave, San Francisco
3 home-service permits on record at 641 18th Ave, San Francisco; the roof was last permitted on Nov 6, 2018 at a declared value of $50,000.
Home-service permits on record at this address
| Issued | Work | Trade | Declared value | Contractor as filed | Status | Permit |
|---|---|---|---|---|---|---|
| Aug 18, 2021 | otc alterations permit: obtain final inspction for work approved under pa# 201711073375 and 201712156594: all work is completed: demo of bathroom and kitchen both units: upgrade electrical panels: remove old ducting in garage: relocate one bathroom wall: replace rear 12 windows | Electrical | $1 | — | issued | 202108186654 |
| Nov 6, 2018 | otc alterations permit: revision to pa # 2018-0222-2020. roof deck addition, relocate kitchen, on third floor, add int stair to roof deck. minor clarifications to original permit | Roofing | $50,000 | — | Finaled Jul 17, 2020 | 201810153229 |
| Nov 14, 2017 | otc alterations permit: demo and remodel bathrooms and kitchens @ both units. upgrade electrical, panels; remove old ducting in garage; no alteration of wall, window and door | Electrical | $65,000 | — | issued | 201711073375 |
On 18th Ave
264 permits on record on 18th Ave.
| Trade | Permits | Since Oct 2, 2024 | Median declared | Range | Last |
|---|---|---|---|---|---|
| Roofing | 196 | 34 | $16,190 | $8,000–$28,689 | Sep 16, 2026 |
| Electrical | 25 | 9 | $44,000 | $400–$154,000 | Aug 26, 2026 |
| Plumbing | 22 | 5 | $28,192 | $11,000–$49,857 | Jul 15, 2026 |
| Heating and cooling | 11 | 3 | — | under 5 | May 4, 2026 |
| Water heater | 7 | 0 | — | under 5 | Nov 28, 2022 |
| Solar | 3 | 1 | — | under 5 | Mar 16, 2026 |
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.