448 Lyon St, San Francisco
2 home-service permits on record at 448 Lyon St, San Francisco; the roof was last permitted on Oct 2, 2019 at a declared value of $500.
Home-service permits on record at this address
| Issued | Work | Trade | Declared value | Contractor as filed | Status | Permit |
|---|---|---|---|---|---|---|
| Oct 2, 2019 | otc alterations permit: revision to app#201810153233 structural roof/truss plan no longer applies. we are using existing roof rafters unit 0 | Roofing | $500 | — | Finaled Aug 5, 2020 | 201909101235 |
| Apr 15, 2019 | additions alterations or repairs: reconfigure layout on 2nd & 3rd flrs; at 2nd floor, renovate full bath, relocate master suite from 3rd to 2nd. relocate kitchen to 3rd fl; add 1/2 bath at 3rd floor w/ roof dormer, some lighting, roof framing replacement on interior w/ scissor truss system. replace 9 windows at front unit 0 | Roofing | $400,000 | — | Finaled Aug 5, 2020 | 201810153233 |
On Lyon St
140 permits on record on Lyon St.
| Trade | Permits | Since Oct 6, 2024 | Median declared | Range | Last |
|---|---|---|---|---|---|
| Roofing | 105 | 22 | $17,750 | $7,876–$75,350 | Sep 17, 2026 |
| Plumbing | 12 | 4 | — | under 5 | Jun 18, 2026 |
| Electrical | 12 | 0 | — | under 5 | May 1, 2024 |
| Heating and cooling | 6 | 2 | — | under 5 | Sep 25, 2026 |
| Solar | 3 | 1 | — | under 5 | Apr 3, 2026 |
| Water heater | 2 | 1 | — | under 5 | Aug 29, 2025 |
Roof replacement cost in San Francisco
Across 5,872 one- and two-family reroof permits since October 6, 2024, most declared values run from $7,655 to $32,000 (the middle 80%); the median is $15,000 and half fall between $10,800 and $21,792. 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 293 one- and two-family heating and cooling permits since October 6, 2024, most declared values run from $21 to $223,693 (the middle 80%); the median is $25,996 and half fall between $5,000 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 6, 2026. Owner names are not shown on any page.