1638 Lake St, San Francisco
2 home-service permits on record at 1638 Lake St, San Francisco; the roof was last permitted on Apr 22, 2025 at a declared value of $7,200.
Home-service permits on record at this address
| Issued | Work | Trade | Declared value | Contractor as filed | Status | Permit |
|---|---|---|---|---|---|---|
| Apr 22, 2025 | otc alterations permit: back lower slate deck waterproofing work. remove all roof covering matials. install 3/4in acx plywood, 8d common nails at 6" o.c. edge nail. apply elasto deck 5000x2 waterproofing system | Roofing | $7,200 | — | Finaled Jun 30, 2025 | 202504224965 |
| Apr 11, 2025 | ReRoof: re-roofing: remove and replace roofing material / existing roofing material | Roofing | $28,060 | — | Finaled May 5, 2025 | 202504114190 |
On Lake St
195 permits on record on Lake St.
| Trade | Permits | Since Oct 4, 2024 | Median declared | Range | Last |
|---|---|---|---|---|---|
| Roofing | 136 | 21 | $21,800 | $7,200–$57,300 | Sep 17, 2026 |
| Plumbing | 30 | 6 | $67,500 | $37,700–$153,500 | Jul 28, 2026 |
| Electrical | 20 | 3 | — | under 5 | May 19, 2026 |
| Heating and cooling | 6 | 2 | — | under 5 | Jul 28, 2026 |
| Solar | 2 | 2 | — | under 5 | May 27, 2026 |
| Water heater | 1 | 0 | — | under 5 | Sep 28, 2016 |
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. This address is in that cohort. 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. 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 4, 2026. Owner names are not shown on any page.