Jon Yukio Yokoyama
Engineer · Paradigm Structural Engineers · Walnut Creek
Public records
From the licensing board and the city of San Francisco.
The short answer
- Licensed?
- License activeStructural Engineer S-4216First issued Mar 20, 1998, expires Jun 30, 2028.
Source: DCA license roster, retrieved Nov 5, 2026
- Any board discipline?
- None found.
We searched the BPELSG enforcement list on Nov 5, 2026.
- Worked in San Francisco?
- 19 permits since 2012, 19 in the last 5 years. Latest filed Nov 5, 2025.
- What kind of projects?
- Commercial or tenant improvement 14 · Other 3 · Legalize or fix a violation 1
- How long do their permits take?
- Commercial or tenant improvement: 3 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 12 issued permits filed since 1966; 1 still in review. City is the San Francisco median for the same kind of review, from 15,396 permits.
Where
- Financial District/South Beach3
- Inner Sunset2
- Outer Mission2
- Nob Hill1
Most recent
- 445 Powell St #0Ab-017: decommissioning of bank of america. removal of bank furniture, equipment, vault and other bank elements related to bofa; removal of exterior atm; deposit box. scope of work will not public right of wayNov 5, 2025Complete
- 251 Rhode Island StLobby improvement: demolition of non-structural partitions, new non structural partitions, millwork, door assemblies, light fixtures, ceiling assemblies and finishes. new interior stairsDec 15, 2023Complete
- 1700 Pine StBarrier removal, upgrade (e) stair from basement to level 1 and 2 to meet accessibility requirements per 11b-504Sep 15, 2023Complete
- 701 Irving StInstall replacement atm site improvements to create accesible landing for atm infill window in atm roomSep 22, 2022Complete
- 433 Cortland AvRemoval of (1) street facing atm and infill opening. add new exterior door. removal of 2 interior atms and infill openings. addition of interior partition. upgrades to exterior landing at atm and new exterior door.May 12, 2022Complete
| Filed | Project | Type | Status | Time to permit | Open |
|---|---|---|---|---|---|
| Nov 5, 2025 | 445 Powell St #0 Ab-017: decommissioning of bank of america. removal of bank furniture, equipment, vault and other bank elements related to bofa; removal of exterior atm; deposit box. scope of work will not public right of way Complete | Commercial or tenant improvement | Complete | 1 month | |
| Oct 16, 2025 | 38 Hotaling Pl #0 Replacement of (e) elevator pit with (n) concrete pit Issued | OtherType unconfirmed | Issued | Within 1 month | |
| Dec 15, 2023 | 251 Rhode Island St Lobby improvement: demolition of non-structural partitions, new non structural partitions, millwork, door assemblies, light fixtures, ceiling assemblies and finishes. new interior stairs Complete | Commercial or tenant improvement | Complete | 2 months | |
| Sep 15, 2023 | 1700 Pine St Barrier removal, upgrade (e) stair from basement to level 1 and 2 to meet accessibility requirements per 11b-504 Complete | Commercial or tenant improvement | Complete | Within 1 month | |
| Sep 22, 2022 | 701 Irving St Install replacement atm site improvements to create accesible landing for atm infill window in atm room Complete | Commercial or tenant improvement | Complete | 6 months | |
| May 12, 2022 | 433 Cortland Av Removal of (1) street facing atm and infill opening. add new exterior door. removal of 2 interior atms and infill openings. addition of interior partition. upgrades to exterior landing at atm and new exterior door. Complete | Commercial or tenant improvement | Complete | 13 months | |
| Feb 22, 2022 | 55 New Montgomery St Addition of a new roof deck on the 9th lvl or 8th floor roof converting this level to an occupied roof deck as amentity to the commercial office. new 735 sf roof deck, roof deck planters, egress paths, perimeter guard rails, new 2-stop elevator for accessibility & extending two mstairs to roof. Approved | Deck, stairs or patio cover | Approved | — | |
| Feb 11, 2022 | 550 California St #0 To comply w/nov #202286616. repairs to sub-sidewalk basement roof slab Complete | Legalize or fix a violation | Complete | 4 months | |
| Feb 1, 2022 | 444 Castro St Revision to pa# 202008081397. 4x4 cut structural revisions to fix. Complete | Revision or supplement | Complete | Within 1 month | |
| Dec 1, 2021 | 3251 20th Av Suite# op109: change occupancy from restraurant to lending institution. t.i. including: exterior storefront w/ structural columns & headers, interior non-bearing partitions, millwork & interior finishes, electrical power & lighting, mechanical distribution, plumbing fixtures. Withdrawn | Commercial or tenant improvement | Withdrawn | — | |
| Sep 8, 2021 | 1995 Union St To remove (e) vault located at the bank of america which is being decommissioned,adding a bath. bank is vacant space. adding one new restroom & associated mep Complete | Commercial or tenant improvement | Complete | 5 months | |
| Dec 18, 2020 | 4638 Mission St Replace existing through the wall atm with newer model. recess floor at new atm per accessibility reach range requirement. Complete | Commercial or tenant improvement | Complete | 6 months | |
| Jan 16, 2020 | 800 Irving St Interior ti of existing bank. to include: new finishes, partitions, mechanical, electrical and plumbing equipment. Complete | Commercial or tenant improvement | Complete | 1 month | |
| Mar 15, 2019 | 1455 Stockton St Interior ti new partial height partitions. new wellness room, new unisex restroom ada teller accessibility compliance, new lighting,mep Complete | Commercial or tenant improvement | Complete | Within 1 month | |
| Dec 13, 2017 | 4638 Mission St #0 Voluntary accessibility barrier removal project to relocate (e) interior atm to provide proper turning radius for wheelchair. no work on exterior. Issued | Commercial or tenant improvement | Issued | Within 1 month | |
| Aug 10, 2017 | 245 Market St Demo partitions, doors, millwork, floor & mep. create offices, ada restrooms, breakroom, load bearing partitions, mep Complete | Commercial or tenant improvement | Complete | 4 months | |
| Jul 21, 2015 | 430 Bush St Demo(e)non-load bearing partitions,ceilings,ductwork,elec conduit& plumbing fixtures.install new ceiling,interior partitions,lighting,doors, finishes&plumbing fixtures.alter both mech&elec sys.refinish interior side(e)exterior window frames.n/a maher ord. Complete | Commercial or tenant improvement | Complete | 5 months | |
| May 15, 2014 | 430 Bush St Demolition of (e) non load bearing partition, ceiling & finishes. install new non-load bearing partition, ceiling & finishes. modification of (e) mechanical, electrical & plumbing distribution system. replace (e) windows glazing. 1 hr on building sides & non rated on bush street side. replace Filed | Commercial or tenant improvement | Filed | — | |
| Jan 16, 2013 | 1455 Market St Partial demo of stucco walls and removal of some (e) precast solid panels. the installation of new glazed openings with top and bottom (head & sill) precast panels at the (e) precast conditions. the glazing to match the (e) glazing look Issued | Other | Issued | 3 months | |
| Nov 21, 2012 | 1455 Market St Removal of (3) existing precast panels, the installation of (3) new glazed openings and new precast concrete, sills and headers. Issued | Other | Issued | 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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