Yao Kun Chen
Architect · Yao Chen Architecture Studio
Public records
From the licensing board and the city of San Francisco.
The short answer
- Licensed?
- License activeArchitect C-36094First issued Nov 16, 2016, expires Jul 31, 2027.
Source: DCA License Search, retrieved Nov 5, 2026
- Any board discipline?
- None found.
We searched the California Architects Board enforcement list on Nov 5, 2026.
- Worked in San Francisco?
- 34 permits since 2019, 34 in the last 5 years. Latest filed Feb 26, 2026.
- What kind of projects?
- Commercial or tenant improvement 14 · Home remodel 7 · Addition 3
- How long do their permits take?
- Commercial or tenant improvement: 5 months. City typical for the same review: within 1 month.
Permits filed each year
San Francisco permits by the year they were filed. The last 5 years are in blue.
What are you planning?
Pick your kind of project to see their permits for it.
Commercial or tenant improvement: 14 permits in San Francisco
Time to get a permit
Median from filing to permit, from 13 issued permits filed since 1966; 1 still in review. City is the San Francisco median for the same kind of review, from 11,090 permits.
Where
- Nob Hill4
- Treasure Island2
- Bayview Hunters Point2
- Excelsior1
Most recent
- 749 09th Ti StTenant improvement to existing ymca kitchen by adding a type-1 vent hood 8'long and hung from the roof structure. placement of hood exhaust fan and mau at the existing roof.Jul 29, 2025Approved
- 5315 Mission StUnit c: for abe compliance program per ordinance 51-16, abe# 201911188334, replace door threshold w/max 1/2" height and 1/4" bevel, add push button to main entrance, replace door knob to lever-hdl at entry door side, adjust entry landing to 2% max slope.Sep 21, 2023Issued
- 1555 California St1. replace door threshold w/ max 1/2" ht 1/4" bevel. 2. add new ada push buttons to business entrance. 3. replace door knob to lever at the int door. 4. adjust entry landng to 2% max slope. to applu accessible business entrance program. abe:201807231712Dec 21, 2022Complete
- 1544 Polk StTo comply with the accessible business entrance program abe #202209214500. ada entrance apply for technical infeasibility.Dec 15, 2022Issued
- 1540 Polk StTo comply with the accessible business entrance program abe #202209164498. 1) replace door threshold witth max 1/2" height. 2) new 1:20 slope ramp. 3) new ada push bottom to the main business entrance.Dec 15, 2022Issued
| Filed | Project | Type | Status | Time to permit | Open |
|---|---|---|---|---|---|
| Feb 26, 2026 | 244 Napoleon St To comply with nov#202536112: partial demolition of structure at the north. new ada bathroom. Filed | Legalize or fix a violation | Filed | — | |
| Jul 29, 2025 | 749 09th Ti St Tenant improvement to existing ymca kitchen by adding a type-1 vent hood 8'long and hung from the roof structure. placement of hood exhaust fan and mau at the existing roof. Approved | Commercial or tenant improvement | Approved | — | |
| Aug 28, 2024 | 17 25th North Av Change the (e) office to (n) laundry room with (n) closet, w&d hookups and electrical outlets. scope includes (n) utility sink and under counter fridge. Complete | Home remodel | Complete | 1 month | |
| Sep 21, 2023 | 5315 Mission St Unit c: for abe compliance program per ordinance 51-16, abe# 201911188334, replace door threshold w/max 1/2" height and 1/4" bevel, add push button to main entrance, replace door knob to lever-hdl at entry door side, adjust entry landing to 2% max slope. Issued | Commercial or tenant improvement | Issued | 5 months | |
| Jun 12, 2023 | 4634 25th St A new addition (310 sf) on the basement level to infill the existing extension toward the rear yard, roof over basement addition become deck access from the street level/first floor. Filed | Addition | Filed | — | |
| Apr 13, 2023 | 666 Monterey Bl Excavate to create storage area at the ground/first floor install new partitions to create power room and storage area-unconditional area. relocate washer, dryer, furnace and water boiler. Complete | Home remodelType unconfirmed | Complete | Within 1 month | |
| Mar 7, 2023 | 1426 Yosemite Av Replace corrugated metal panel siding with new stucco siding. change facade profile to improve curbside appeal Complete | Other | Complete | 2 months | |
| Mar 2, 2023 | 3515 20th St Storefront renovation at existing storefront Complete | OtherType unconfirmed | Complete | 2 months | |
| Jan 17, 2023 | 130 Grand View Av Addtion of bump out to the street level garage which adds 87sf of area to the garage, propose 3 roll-up garage doors facing the street, the new garage bump out only single story with class a roofing area, add 2 sconce lights for exterior illumination.replace driveway Expired | Addition | Expired | 10 months | |
| Dec 21, 2022 | 1555 California St 1. replace door threshold w/ max 1/2" ht 1/4" bevel. 2. add new ada push buttons to business entrance. 3. replace door knob to lever at the int door. 4. adjust entry landng to 2% max slope. to applu accessible business entrance program. abe:201807231712 Complete | Commercial or tenant improvement | Complete | Within 1 month | |
| Dec 15, 2022 | 1544 Polk St To comply with the accessible business entrance program abe #202209214500. ada entrance apply for technical infeasibility. Issued | Commercial or tenant improvement | Issued | Within 1 month | |
| Dec 15, 2022 | 1540 Polk St To comply with the accessible business entrance program abe #202209164498. 1) replace door threshold witth max 1/2" height. 2) new 1:20 slope ramp. 3) new ada push bottom to the main business entrance. Issued | Commercial or tenant improvement | Issued | 5 months | |
| Dec 15, 2022 | 1542 Polk St To comply with the accessible business entrance program abe #202209164499. 1) new ada push bottom to the main business entrance. 2) replace door threshold witth max 1/2" height. Complete | Commercial or tenant improvement | Complete | Within 1 month | |
| Nov 21, 2022 | 624 Fillmore St #3 Interior remodel kitchen and bath Complete | Home remodel | Complete | 1 month | |
| Nov 10, 2022 | 2200 Keith St Tenant improvement to (e) office/warehouse by building a 2nd level to the open warehouse area, w/ new stair going to the new 2nd fl office/storage area. maintain 15ft from 1st fl finish level to ceiling as required. no exterior work. all foundation/functional work only pertaining to the interior. Issued | Addition | Issued | 30 months | |
| Aug 30, 2022 | 3621 Divisadero St Legalize as built to pa# 200008117637. wall layout changes to 1st fl. remove stair to 2nd fl. create 1 office with 1-hr rated wall for separation to garage. replace approved deck with 2 juliet balconies. omit stair to 3rd fl. add rooms to playroom on 3rd fl. Filed | Revision or supplement | Filed | — | |
| Aug 4, 2022 | 60 Clipper Cove Wy Renovate (e) storage room by adding a 2-hour fire rated wall to divide a room space of about 1500 sf into (2) rooms, server (716 sf) & storage rooms (770 sf). Complete | Commercial or tenant improvement | Complete | 5 months | |
| Jul 26, 2022 | 3621 Divisadero St Revision to pa 2022-0608-5840 legalize (e) 1 hr rated window @ lightwell and infill interior window frame w/wood framing and 5/8" type x gyp bd. to comply with nov 202289028 Complete | Revision or supplement | Complete | Within 1 month | |
| Jun 13, 2022 | 1350 Marin St The front entrance to be modified to accommodate an accessible ramp with handril to be in compliance. the (e) ada toilet to be verified for compliance based on provided detail sheet a-208. ** maher: n/a ** to comply with abe program, abe# 202204190500. Complete | Commercial or tenant improvement | Complete | 16 months | |
| Jun 10, 2022 | 1555 Burke Av #0 Add a food prep area to an (e) tenant space the new food prep area is carved out rom the storage area (1) 3- comp sink 2 warm tables,ss prep-table, 1 hand sink Complete | Commercial or tenant improvement | Complete | 3 months |
Sources: DataSF i98e-djp9, 3pee-9qhc, retrieved Nov 5, 2026. Names on permits are matched to licenses by license number and name; unmatched records are not shown.
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