Level 21 Construction Company
- Based in
- Patterson
- On San Francisco permits
- Feb 2019 to Sep 2026
- Last 24 months
- 3 permits filed
26 permits since 2000: 20 completed, 3 in progress, 1 never finaled, 2 expired or cancelled.
Of the 1 never-finaled permit, 1 is 3 to 5 years old.
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 |
|---|---|---|---|---|
| Sep 17, 2026 | In progress filed Sep 2026, not yet issued | 4348 17th St | reinforcement floor sructure below kitchen area with concrete piers, post and beams per structural drawings. (prepared by verdant structural engineers)Details
reinforcement floor sructure below kitchen area with concrete piers, post and beams per structural drawings. (prepared by verdant structural engineers) | $12,000 |
| May 28, 2026 | In progress issued Jun 2026 | 855 40th Av | to obtain final inspection for work approved under pa #202406063842 & #202112305223. all work is complete.Details
to obtain final inspection for work approved under pa #202406063842 & #202112305223. all work is complete. | |
| Dec 11, 2024 | Completed final sign-off Aug 2025 | 4348 17th St | remodel of (e) home includes adding (n) 2 bathrooms located on 2nd floor. to include upgrades for electrical and plumbing.Details
remodel of (e) home includes adding (n) 2 bathrooms located on 2nd floor. to include upgrades for electrical and plumbing. | $42,000 |
| Jul 24, 2024 | In progress issued Sep 2024 | 855 40th Av | rev pa 202112305223: install elevator. minor modifications to various windows and door sizes. addition of powder room to adu. remove front roof deck previously approved.Details
rev pa 202112305223: install elevator. minor modifications to various windows and door sizes. addition of powder room to adu. remove front roof deck previously approved. | $20,000 |
| Feb 9, 2024 | Completed final sign-off Feb 2024 | 3229 Santiago St | to obtain final inspection for work approved under 202107023678. all work is completeDetails
to obtain final inspection for work approved under 202107023678. all work is complete | |
| Feb 9, 2024 | Completed final sign-off Feb 2024 | 3229 Santiago St | to obtain final inspection for work approved under 202104208903. all work is completeDetails
to obtain final inspection for work approved under 202104208903. all work is complete | |
| Jan 30, 2024 | Completed final sign-off Apr 2025 | 449 Flood Av | revision to pa# 202311140746, expand new slab to bedroom , new door to rear yard, underpinned existing foundation at 6" lowered slab, replace rear siding at first flr, eliminate pull/ torque test since anchors cast in new concrete.Details
revision to pa# 202311140746, expand new slab to bedroom , new door to rear yard, underpinned existing foundation at 6" lowered slab, replace rear siding at first flr, eliminate pull/ torque test since anchors cast in new concrete. | $21,000 |
| Nov 14, 2023 | Completed final sign-off Apr 2025 | 449 Flood Av | comply w/ nov# 202312160: ground floor remodel, add family room, (2) bathrooms, (2) bedrooms. upgrade foundation at rear. replace raised dloor with concrete slab on grade. infill side door and reloate (2) side windows (not visible from street).Details
comply w/ nov# 202312160: ground floor remodel, add family room, (2) bathrooms, (2) bedrooms. upgrade foundation at rear. replace raised dloor with concrete slab on grade. infill side door and reloate (2) side windows (not visible from street). | $81,000 |
| Aug 3, 2023 | Completed final sign-off Feb 2024 | 353 Mangels Av | interior renovation of 1st fl: adding a mudroom to entry. renovating the master bedroom & master bath. no changes to 2nd fl. all interior workDetails
interior renovation of 1st fl: adding a mudroom to entry. renovating the master bedroom & master bath. no changes to 2nd fl. all interior work | $40,000 |
| May 17, 2023 | Completed final sign-off Dec 2023 | 4412 17th St | 18' linear feet existing foundation replacement. new 74 sqft conditioned space addition in rear/drywall repair exterior siding repair/infill (e) doorway with new door new juliette balanies at(e) 2nd story rear doors fence repair at rear side.Details
18' linear feet existing foundation replacement. new 74 sqft conditioned space addition in rear/drywall repair exterior siding repair/infill (e) doorway with new door new juliette balanies at(e) 2nd story rear doors fence repair at rear side. | $27,000 |
| May 12, 2023 | Completed final sign-off Oct 2023 | 618 23rd Av | structural revision to permit 202303093314. replace (e) substandard foundation supporting rear structure. new steel beam over kitchen. voluntary lateral stiffening of front wall with plywood. strengthen ceiling-joists at 3/f.Details
structural revision to permit 202303093314. replace (e) substandard foundation supporting rear structure. new steel beam over kitchen. voluntary lateral stiffening of front wall with plywood. strengthen ceiling-joists at 3/f. | $15,000 |
| Apr 10, 2023 | Completed final sign-off Aug 2023 | 4412 17th St | second story like for like hallway bathroom remodelDetails
second story like for like hallway bathroom remodel | $17,000 |
| Mar 9, 2023 | Completed final sign-off Oct 2023 | 618 23rd Av | remodel 2nd flr kitchen, powder and laundry, add patio door. reconfigure existing 3rd flr bathrooms (2), add closet and hallway, no increase in footprint. no change to street facade.Details
remodel 2nd flr kitchen, powder and laundry, add patio door. reconfigure existing 3rd flr bathrooms (2), add closet and hallway, no increase in footprint. no change to street facade. | $205,000 |
| Sep 29, 2022 | Completed final sign-off Sep 2023 | 1014 Castro St | revision to bpa#202103116324, change lightwell & backwall to stuccoDetails
revision to bpa#202103116324, change lightwell & backwall to stucco | |
| Jul 15, 2022 | Completed final sign-off Sep 2023 | 1014 Castro St | new skylight fire rated, parapet, new solar tube to 1st story bath, replace living rm windows in kind, aluminum clad wood windows. change concrete slab to pavers in rear patiosDetails
new skylight fire rated, parapet, new solar tube to 1st story bath, replace living rm windows in kind, aluminum clad wood windows. change concrete slab to pavers in rear patios | $10,000 |
| Dec 30, 2021 | Never finaled issued Jun 2023, no final | 855 40th Av | remodel (e) 2 story with addition of partial 3rd floor. 1st floor: reconfigure walls. create 2 bed, 1 bath dwelling unit. 2nd floor: remodel kitchen & 2 baths. add stair to 3rd floor. 3rd floor: addition of new bedroom, bath & sunroom.Details
remodel (e) 2 story with addition of partial 3rd floor. 1st floor: reconfigure walls. create 2 bed, 1 bath dwelling unit. 2nd floor: remodel kitchen & 2 baths. add stair to 3rd floor. 3rd floor: addition of new bedroom, bath & sunroom. | $400,000 |
| Jul 2, 2021 | Expired or cancelled expired Feb 2024 | 3229 Santiago St | revision to pa 2021-0420-8903 - lower (e) slab @ 1st floor, add sliding glass doors to 2nd floor; reconfigure bathroom. remove (e) stairs @ rear yard.Details
revision to pa 2021-0420-8903 - lower (e) slab @ 1st floor, add sliding glass doors to 2nd floor; reconfigure bathroom. remove (e) stairs @ rear yard. | $10,000 |
| Apr 20, 2021 | Expired or cancelled expired Feb 2024 | 3229 Santiago St | 1st fl: convert unwarranted space to living space. remodel bath, replace windows, add slding doors, add hall. 2nd fl: remodel kitchen and bath, replace windows (visible from st)Details
1st fl: convert unwarranted space to living space. remodel bath, replace windows, add slding doors, add hall. 2nd fl: remodel kitchen and bath, replace windows (visible from st) | $75,000 |
| Mar 11, 2021 | Completed final sign-off Sep 2023 | 1014 Castro St | remodeling kitchen, bathroom and dining room. adding bathroom and bedroom in (e) basement. excavating part of rear yeard for new 1st story access.Details
remodeling kitchen, bathroom and dining room. adding bathroom and bedroom in (e) basement. excavating part of rear yeard for new 1st story access. | $145,000 |
| Feb 28, 2020 | Completed final sign-off Sep 2021 | 555 Ramsell St | revision to pa# 2019-0326-6245. to abate planning code violation 2019-022911 enf. remove 81% of interior walls.Details
revision to pa# 2019-0326-6245. to abate planning code violation 2019-022911 enf. remove 81% of interior walls. | |
| Nov 15, 2019 | Completed final sign-off Sep 2021 | 555 Ramsell St | replace stucco at entire facade. see multiple permits 201908158943 (revision to orig permit 201903266245), permit 201909303008 (reroof), permit 201903266245 (interior remodel and new deck), permit 201812289324 (kitchen and bath remodel). no other work under this permit.Details
replace stucco at entire facade. see multiple permits 201908158943 (revision to orig permit 201903266245), permit 201909303008 (reroof), permit 201903266245 (interior remodel and new deck), permit 201812289324 (kitchen and bath remodel). no other work under this permit. | $44,000 |
| Aug 15, 2019 | Completed final sign-off Sep 2021 | 555 Ramsell St | rev to pa# 201903266245; basement reconfigure bedroom, bath and family layout, 1st fl reconfigure kitchen and exteriror stairs layout, 2nd fl. reconfigure master bedroom closet layout.Details
rev to pa# 201903266245; basement reconfigure bedroom, bath and family layout, 1st fl reconfigure kitchen and exteriror stairs layout, 2nd fl. reconfigure master bedroom closet layout. | |
| May 21, 2019 | Completed final sign-off Jul 2020 | 811 39th Av | revision to pa 201902284096. infill north side lightwell at 1st flr.Details
revision to pa 201902284096. infill north side lightwell at 1st flr. | $1,000 |
| Apr 4, 2019 | Completed final sign-off Aug 2020 | 811 39th Av | 1st floor: add (n) adu per ordinance #162-17. (1) kitchen, living, dining, (1) bedroom & (1) full bath. 2nd floor: work under bpa #201902284096Details
1st floor: add (n) adu per ordinance #162-17. (1) kitchen, living, dining, (1) bedroom & (1) full bath. 2nd floor: work under bpa #201902284096 | $70,000 |
| Mar 26, 2019 | Completed final sign-off Sep 2021 | 555 Ramsell St | basement: add 1 bedroom, family, and 1 full bath. new patio. 1st fl: remodel kitchen and bathroom. 2nd fl: add 2 full baths and laundry. new deck at rear.Details
basement: add 1 bedroom, family, and 1 full bath. new patio. 1st fl: remodel kitchen and bathroom. 2nd fl: add 2 full baths and laundry. new deck at rear. | $85,000 |
| Feb 28, 2019 | Completed final sign-off Jul 2020 | 811 39th Av | 1st flr - foundation work 2nd flr - infill south lightwell. remodel kitchenand bathroom add 1 full bathDetails
1st flr - foundation work 2nd flr - infill south lightwell. remodel kitchenand bathroom add 1 full bath | $50,000 |