521 Cortland Ave, San Francisco
1 home-service permit on record at 521 Cortland 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 |
|---|---|---|---|---|---|---|
| Mar 18, 2024 | otc alterations permit: comply w/ accessible entrance program per ordinance 51-16. abe# 201911228605. change entrance door and electrical power door operator | Electrical | $6,304 | — | Finaled Jun 18, 2025 | 202312202856 |
On Cortland Ave
75 permits on record on Cortland Ave.
| Trade | Permits | Since Oct 2, 2024 | Median declared | Range | Last |
|---|---|---|---|---|---|
| Roofing | 45 | 13 | $12,280 | $4,000–$24,382 | Sep 24, 2026 |
| Electrical | 11 | 5 | $84,000 | $52,334–$242,532 | Feb 18, 2026 |
| Heating and cooling | 8 | 1 | — | under 5 | May 22, 2025 |
| Plumbing | 6 | 1 | — | under 5 | Nov 4, 2025 |
| Water heater | 3 | 0 | — | under 5 | Aug 25, 2022 |
| Solar | 2 | 1 | — | under 5 | May 21, 2026 |
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.