42 Lower Trl, San Francisco
2 home-service permits on record at 42 Lower Trl, San Francisco; the roof was last permitted on Jun 18, 2018 at a declared value of $10,000.
Home-service permits on record at this address
| Issued | Work | Trade | Declared value | Contractor as filed | Status | Permit |
|---|---|---|---|---|---|---|
| Jun 18, 2018 | otc alterations permit: revision to app#201705307950. add a new roof deck & roof hatch unit 0 | Roofing | $10,000 | — | Finaled Apr 11, 2019 | 201803163927 |
| Feb 9, 2018 | otc alterations permit: work on upper unit on 2nd floor only - interior remodeling kitchen, bathroom, set back wall 3'-11" increase guardrail ht from 36" to 42" ht. replace roofing & reinforce roof framing unit 0 | Roofing | $100,000 | — | Finaled Apr 11, 2019 | 201705307950 |
On Lower Trl
20 permits on record on Lower Trl.
| Trade | Permits | Since Oct 2, 2024 | Median declared | Range | Last |
|---|---|---|---|---|---|
| Roofing | 14 | 1 | — | under 5 | Dec 1, 2025 |
| Heating and cooling | 4 | 1 | — | under 5 | Jun 1, 2026 |
| Plumbing | 2 | 1 | — | under 5 | Jun 17, 2025 |
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.