Duffy Construction Llc
- Based in
- San Francisco
- On San Francisco permits
- Nov 2025 to Sep 2026
- Last 24 months
- 7 permits filed
7 permits since 2000: 7 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 stairs 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. Too few of this contractor’s permits have finished to plot them.
Stairs permits
1 stairs permit: 1 in progress. Typically 127 days from filing to permit.
| Filed | Outcome | Address | Work described on the permit | Declared cost |
|---|---|---|---|---|
| Nov 12, 2025 | In progress issued Mar 2026 | 1065 Ashbury St | convert (e) storage area on 1st fl into family & media room; install a spiral staircase connects to 2nd floor unit. close existing illegal door on north side of property. add 1 hr fire rated glass windows on south side property at front entry.Details
convert (e) storage area on 1st fl into family & media room; install a spiral staircase connects to 2nd floor unit. close existing illegal door on north side of property. add 1 hr fire rated glass windows on south side property at front entry. | $100,000 |