Carbon Zero Buildings Inc
- Based in
- Lafayette
- On San Francisco permits
- Oct 2023 to Dec 2025
- Last 24 months
- 9 permits filed
11 permits since 2000: 6 completed, 5 in progress.
This is the city’s permit record, not a license check. It does not show whether the state license is active, bonded or insured. How to read these records
Permits filed each year
How long permits take
Each point is the quarter the permits were filed, for all building permits across San Francisco. A median counts only permits that have finished, so the shaded recent quarters look faster than they will end up: their slow permits have not finished yet. Hover a point for the slowest 10%. Gaps mean fewer than 5 permits. A rise in the issue line is the city’s review backlog, not the contractor.
Most recent permits
| Filed | Outcome | Address | Work described on the permit | Declared cost |
|---|---|---|---|---|
| Dec 3, 2025 | Completed final sign-off Feb 2026 | 871 Turk St | revision to pa #202410183281: revised mechanical t24 page & elimnate uneccsary special inspection. to remove the nrca-mch-08, nrca-mch-09, and nrca-mch-10 itemsDetails
revision to pa #202410183281: revised mechanical t24 page & elimnate uneccsary special inspection. to remove the nrca-mch-08, nrca-mch-09, and nrca-mch-10 items | |
| Nov 3, 2025 | In progress issued Nov 2025 | 333 Baker St | revision to permit 202506068146 to clarify new disconnect switch.Details
revision to permit 202506068146 to clarify new disconnect switch. | |
| Jun 6, 2025 | In progress issued Jul 2025 | 333 Baker St | remove 2 water boilers, reconfigure solar and boiler storage, provide new hot water heat pump on roof within associated electrical, plumbing and mechanical workDetails
remove 2 water boilers, reconfigure solar and boiler storage, provide new hot water heat pump on roof within associated electrical, plumbing and mechanical work | $175,000 |
| May 30, 2025 | In progress issued Jun 2025 | 1180 04th St | remove old water boilers, install new heat pump, new hot water heating system, install new heat pump and perfrom associated electrical work, disconnect and cap gas pipes.Details
remove old water boilers, install new heat pump, new hot water heating system, install new heat pump and perfrom associated electrical work, disconnect and cap gas pipes. | $200,000 |
| Mar 27, 2025 | In progress issued Apr 2025 | 54 Mcallister St | revision to pa # 2025-0110-8130 revision to remove the step up/ step down transformer, add new conductor, new exterior cable and remove upgraded panelDetails
revision to pa # 2025-0110-8130 revision to remove the step up/ step down transformer, add new conductor, new exterior cable and remove upgraded panel | |
| Mar 7, 2025 | Completed final sign-off Feb 2026 | 871 Turk St | revision to 202410183281, revision to upgrade electrical support and associated structural attachments to approved mechanical upgrades.Details
revision to 202410183281, revision to upgrade electrical support and associated structural attachments to approved mechanical upgrades. | $5,000 |
| Jan 10, 2025 | In progress issued Jan 2025 | 54 Mcallister St | upgrade to plumbing system (heat pumps & buffer tanks) and associated electrical work at roof topDetails
upgrade to plumbing system (heat pumps & buffer tanks) and associated electrical work at roof top | $125,000 |
| Oct 28, 2024 | Completed final sign-off Feb 2026 | 347 Dolores St | demo & remove (e) gas water heater and provide new heat pump water heating system with buffer tank & electric swing tankDetails
demo & remove (e) gas water heater and provide new heat pump water heating system with buffer tank & electric swing tank | $150,000 |
| Oct 18, 2024 | Completed final sign-off Feb 2026 | 871 Turk St | updating mechanical, electrical and plumbing systems in an existing apartment building and including structural supports. all work to incur in common areaDetails
updating mechanical, electrical and plumbing systems in an existing apartment building and including structural supports. all work to incur in common area | $300,000 |
| Oct 2, 2023 | Completed final sign-off Dec 2023 | 118 Diamond St | replace existing gas central water heater system with a wall mounted electric heat pump sysem. replace existing gas rtu with heat pump rtu. upgrade elec circuit to laundry room.Details
replace existing gas central water heater system with a wall mounted electric heat pump sysem. replace existing gas rtu with heat pump rtu. upgrade elec circuit to laundry room. | $55,776 |
| Oct 2, 2023 | Completed final sign-off Dec 2023 | 926 Fillmore St | replace existing gas central water heater system with an uprade electgrical circuit to laundry room, wall mounted electric heat pump sysem.Details
replace existing gas central water heater system with an uprade electgrical circuit to laundry room, wall mounted electric heat pump sysem. | $44,516 |