635 42nd Ave, San Francisco
2 home-service permits on record at 635 42nd Ave, San Francisco; the roof was last permitted on Dec 26, 2019 at a declared value of $1.
Home-service permits on record at this address
| Issued | Work | Trade | Declared value | Contractor as filed | Status | Permit |
|---|---|---|---|---|---|---|
| Dec 26, 2019 | otc alterations permit: remove roof deck & replace sky light approved under pa201904117781. roof to remain, skylight per (1|a-1) of plans with pa204117701 | Roofing | $1 | — | Finaled Dec 30, 2019 | 201912260717 |
| Jan 18, 2019 | otc alterations permit: 1/f: add 2 bedrooms, 2 full bathroom, family room with wet bar, office and laundry, new interior stairs and new deck at rear. 2nd floor: remodel kitchen and bathroom. add 1 full bathr new roof deck | Roofing | $180,000 | — | Finaled Dec 30, 2019 | 201901039585 |
On 42nd Ave
233 permits on record on 42nd Ave.
| Trade | Permits | Since Oct 4, 2024 | Median declared | Range | Last |
|---|---|---|---|---|---|
| Roofing | 176 | 36 | $12,000 | $5,500–$19,397 | Jun 26, 2026 |
| Plumbing | 19 | 5 | $60,000 | $26,355–$79,762 | Apr 17, 2026 |
| Water heater | 13 | 4 | — | under 5 | Apr 2, 2026 |
| Electrical | 13 | 3 | — | under 5 | Jul 7, 2025 |
| Heating and cooling | 8 | 1 | — | under 5 | Jun 25, 2026 |
| Solar | 4 | 4 | — | under 5 | Jul 30, 2026 |
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.