What was permitted
This permit details revisions to the heating and cooling systems for a single-family dwelling at 3500 21st St in the Castro/Upper Market neighborhood of San Francisco. The upgrades include switching to two outdoor heat pumps with a ducted multi-split system.
The project, issued on June 18, 2026, has an estimated cost of $15,000. This also includes revising the domestic hot water heater to a heat pump water heater, with updated documentation reflecting these changes.
Plan a similar project
Want work like this done at your place?
Tell us what you have in mind. We scope it, price it against work like this in Castro/Upper Market, and lines up the right contractor. You approve; we handle the back-and-forth.
View the official permit record
Tracking number, work description, cost and dates
View the official permit record
Tracking number, work description, cost and dates
| Tracking number | 202606173378 |
|---|---|
| Work permit # | — |
| Job filing number | — |
| Work type | Alterations · 1 Family Dwelling |
| Status | issued |
| Job description | revision to bpa#202504174601. heating & cooling systems changed to 2 outdoor heat pumps with ducted multi-split system. domestic hot water heater revised to be heat pump water heater cf1r, rms-1 doucments updated to reflect these changes. |
| Floor / unit | — |
| Estimated cost | $15,000 |
| Approved | June 18, 2026 |
| Issued | June 18, 2026 |
| Expires | — |
| BBL | — |
| BIN | — |
Related searches