450 27th St, San Francisco
2 home-service permits on record at 450 27th St, San Francisco; the roof was last permitted on Nov 30, 2017 at a declared value of $12,000.
Home-service permits on record at this address
| Issued | Work | Trade | Declared value | Contractor as filed | Status | Permit |
|---|---|---|---|---|---|---|
| Nov 30, 2017 | otc alterations permit: existing unconditioned shed at rear yard, not visable to street, install 1 new exterior door, change pitched roof to flat roof, less than 10' high | Roofing | $12,000 | — | Finaled Apr 15, 2019 | 201711012891 |
| Apr 3, 2017 | additions alterations or repairs: 2 story side & rear addition with decks. alter roof line & enlarge 3rd story @ front, sides & rear. modify front facade & add 3rd floor concealed front deck. new retractable skylt for roof access & new roof deck. relocate kit. renovate 2 full baths. add 2 full bahts & 1/2 bath. seismic upgrades | Roofing | $800,000 | — | Finaled Apr 23, 2019 | 201508073725 |
On 27th St
117 permits on record on 27th St.
| Trade | Permits | Since Oct 2, 2024 | Median declared | Range | Last |
|---|---|---|---|---|---|
| Roofing | 89 | 12 | $21,450 | $10,050–$52,632 | May 28, 2026 |
| Plumbing | 16 | 3 | — | under 5 | Oct 8, 2025 |
| Electrical | 5 | 0 | — | under 5 | Mar 20, 2024 |
| Solar | 3 | 3 | — | under 5 | Jun 22, 2026 |
| Heating and cooling | 2 | 2 | — | under 5 | May 12, 2025 |
| Water heater | 2 | 0 | — | under 5 | Jun 25, 2024 |
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. 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. 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.