Cornerstome Construction
- Based in
- San Francisco
- On San Francisco permits
- Nov 2023 to Jul 2026
- Last 24 months
- 6 permits filed
11 permits since 2000: 8 completed, 3 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 |
|---|---|---|---|---|
| Jul 2, 2026 | Completed final sign-off Jul 2026 | 980 Baker St | unit 1: remove drywall from ceiling, insulate joist bays with rocwool, reinstall drywall. approximately 850sf.Details
unit 1: remove drywall from ceiling, insulate joist bays with rocwool, reinstall drywall. approximately 850sf. | $10,000 |
| Apr 22, 2026 | Completed final sign-off Jun 2026 | 875 California St | remove bathtub and add laundry in its place. no layout changes. dryer will be ventless.Details
remove bathtub and add laundry in its place. no layout changes. dryer will be ventless. | $10,000 |
| Aug 1, 2025 | Completed final sign-off Mar 2026 | 590 Bosworth St | convert former dental clinic into a wellness studio and offices. demo of non load bearing walls frame in new partition walls. new lighting, new cabinets. no exterior workDetails
convert former dental clinic into a wellness studio and offices. demo of non load bearing walls frame in new partition walls. new lighting, new cabinets. no exterior work | $30,000 |
| Apr 11, 2025 | In progress issued Apr 2025 | 2640 Green St | unit# 2 & 4: interior renovations, remodel of existing kitchen and bathroom both units like for like. 6 windows in unit 2 to replaced like for like and 2 windows in unit 4 to be replaced like for like. 6 skylights replaced for unit 4, like for like. non-street facing windows.Details
unit# 2 & 4: interior renovations, remodel of existing kitchen and bathroom both units like for like. 6 windows in unit 2 to replaced like for like and 2 windows in unit 4 to be replaced like for like. 6 skylights replaced for unit 4, like for like. non-street facing windows. | $200,000 |
| Dec 13, 2024 | In progress issued Dec 2024 | 2640 Green St | (24) like for like wood window replacement on front elevation w/ og lugs (intergral)Details
(24) like for like wood window replacement on front elevation w/ og lugs (intergral) | $48,000 |
| Nov 20, 2024 | In progress issued Dec 2024 | 520 Lisbon St | to comply w/ nov# 20238615 & 202308484, return vacant unwarranted habital room to storage room. remove vynal flooring, re-sheetrock walls, peel & cap all electrical & plumbing. no structural workDetails
to comply w/ nov# 20238615 & 202308484, return vacant unwarranted habital room to storage room. remove vynal flooring, re-sheetrock walls, peel & cap all electrical & plumbing. no structural work | $5,000 |
| Aug 27, 2024 | Completed final sign-off Feb 2025 | 2640 Green St | like for like balcony replacement at 3rd and 4th fl rear elevations. partial replacement.Details
like for like balcony replacement at 3rd and 4th fl rear elevations. partial replacement. | $15,000 |
| May 23, 2024 | Completed final sign-off Aug 2024 | 3380 20th St | replace bath tub w/shower, slight move of water and waste lines, tiling and installation of overhead light fixture. no removal of wallsDetails
replace bath tub w/shower, slight move of water and waste lines, tiling and installation of overhead light fixture. no removal of walls | $15,000 |
| Apr 18, 2024 | Completed final sign-off Jul 2024 | 720 Gough St | remove vanity unit, have paint, re-install 3" higherDetails
remove vanity unit, have paint, re-install 3" higher | $600 |
| Dec 29, 2023 | Completed final sign-off Jun 2024 | 2964 Folsom St | two single to double pane window replacement, aluminum clad (not street facing) u=.30max. total of 2 windows non street facing.Details
two single to double pane window replacement, aluminum clad (not street facing) u=.30max. total of 2 windows non street facing. | $35,000 |
| Nov 28, 2023 | Completed final sign-off Jun 2024 | 2964 Folsom St | kitchen remodel in kind. move sink from one side of kitchen to other side. does not affect egress. no structural work. retiling, sheetrock, mud, taper paint. electrical & plumbing permits to be filed separated by subs. move elec panel from outside to inside.Details
kitchen remodel in kind. move sink from one side of kitchen to other side. does not affect egress. no structural work. retiling, sheetrock, mud, taper paint. electrical & plumbing permits to be filed separated by subs. move elec panel from outside to inside. | $26,500 |