737 20th Ave, San Francisco
2 home-service permits on record at 737 20th Ave, San Francisco; no roofing permit on record.
Home-service permits on record at this address
| Issued | Work | Trade | Declared value | Contractor as filed | Status | Permit |
|---|---|---|---|---|---|---|
| Nov 30, 2017 | otc alterations permit: revision to pa #201611152682. relocate one furnace to under stair area. relocate wall mounted water heater to outside lightwell. new electrical vehicle charger. install anchor bolts & plywood to garage walls in kind | Water heater | $3,000 | — | Finaled Apr 8, 2019 | 201711093592 |
| May 31, 2017 | otc alterations permit: 2nd floor, unit 737 20th ave: remodel kitchen, bathroom, toilet and add new master bath. new lighting and outlets. 1st fl remove post and beam and intall new beam at garage. relocate furnance and install new wall mounted water heater | Water heater | $110,000 | — | Finaled Nov 28, 2018 | 201611152682 |
On 20th Ave
424 permits on record on 20th Ave.
| Trade | Permits | Since Oct 3, 2024 | Median declared | Range | Last |
|---|---|---|---|---|---|
| Roofing | 202 | 33 | $15,000 | $9,200–$39,407 | May 26, 2026 |
| Electrical | 90 | 4 | — | under 5 | Sep 12, 2025 |
| Plumbing | 61 | 10 | $70,500 | $1–$212,500 | Jun 30, 2026 |
| Heating and cooling | 54 | 6 | $50,000 | $12,409–$253,500 | Sep 14, 2026 |
| Water heater | 16 | 1 | — | under 5 | Oct 14, 2025 |
| Solar | 1 | 1 | — | under 5 | Aug 11, 2026 |
Roof replacement cost in San Francisco
Across 5,896 one- and two-family reroof permits since October 3, 2024, most declared values run from $7,650 to $32,000 (the middle 80%); the median is $15,000 and half fall between $10,788 and $21,763. 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 3, 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 3, 2026. Owner names are not shown on any page.