CheckMyDesigner

Duncan Bruce Ballash

Architect · Ehdd Architecture · Palo Alto

Public records

From the licensing board and the city of San Francisco.

The short answer

Licensed?
License activeArchitect C-22066First issued Mar 8, 1991, expires Nov 30, 2027.

Source: DCA license roster, retrieved Nov 5, 2026

Verify on DCA License Search

Any board discipline?
None found.

We searched the California Architects Board enforcement list on Nov 5, 2026.

Worked in San Francisco?
16 permits since 2005, 16 in the last 5 years. Latest filed Sep 2, 2026.
What kind of projects?
Commercial or tenant improvement 9 · Other 5 · Home remodel 1
How long do their permits take?
Commercial or tenant improvement: within 1 month. 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.

Permits
21 permits that name Duncan Bruce Ballash, newest first, including 5 revisions or supplements that are not counted. Select a permit to see the full record.
FiledProjectOpen
Sep 2, 20262601 Mariposa St

Level 3: add walls + alter interior layout to provide separate tenant division on level 3.

Filed
Jul 31, 2023900 Pennsylvania Av

Alteration of (e) large refrigeration/freezer spaces, demo of (e) u nits & (e) slabs ongrade under units, install of new insulated slab, new refrigeration/freezer units w/high piled storage racks, & associated mep. revision apn#202006138695

Complete
Apr 5, 20222601 Mariposa St

Revision to approved permit 201809251300-s3. to revise names of 4 assembly spaces to clarify room use for a3/a2.

Complete
Feb 24, 2022900 Pennsylvania Av

Installation of a recessed floor scale. replacement of southern entry door in kind.

Complete
Dec 23, 20192601 Mariposa St

Exterior signage including building donor name

Complete
Dec 23, 20192601 Mariposa St

Exterior signage including iluminated kqed logo on metal panel

Complete
Dec 23, 20192601 Mariposa St

Exterior signage including kqed logo on curtain wall

Complete
Feb 21, 2019151 03rd St

Install temporary structural steel interface to support temporary video display wall for exhibition. interface is between display structure and existing building structure. maher n/a

Issued
Jan 17, 201950 Beale St

Interior renovation of level 4 including light demolition and minor layout changes of office spaces, and new lighting. maher na

Complete
Jan 16, 201950 Beale St

Interior renoavtion of (e) office space w/ light demo of private offices and installation of portable sound booths and open workstations

Complete
Sep 25, 20182601 Mariposa St

Enlarge entry & expand footprint @ nw corner. add mezz at roof level for multipurpose meeting room, catering kitchen, lunch room & roof terrace, renovation of interior spaces, seismic improvements, mep upgrades. maher n/a.

Complete
Jul 10, 2017151 03rd St

Permanent assembly permit including change in occupancy from a3 to a2 for 6 e spaces and change in occupant load/load factor in 2 spaces (levels 2/3) no physical changes to e building or fire l/s systems in this scope.all new revisions clouded in bold.changes due to 2016 code cycle/minor constructn

Complete
Feb 13, 2017495 De Haro St

Tenant improvement- convert some (e) warehouse apce in building for use as a small brewery and small tap room/bar. work includes addition of a bathroom, ramp, railings, and egress doors. change of occupancy a-2, f-2 (building) and tap room (retail), maher n/a

Complete
Jul 1, 2016151 03rd St

Installation and seismic bracing of shelving units on floors; basement, 1,2, 9 & 10 of the sfmoma are museum. ref pa 2012-1109-3897s (r1)

Issued
Jun 17, 2016151 03rd St

7th & 8th fl: installation of new aluminum frame and millwork structure sliding wall panels of the sfmoma conservation studios for storage of artist materials. all storage portions of structure are <10' aff. revision pa 201211093897 to install only sliding panel structure

Complete
Apr 7, 2016151 03rd St

Temporary modification of extg sfmoma expansion freight elevator l including removal of stop at ground floor level 1 and infill of extg door opening with 2 hour fire rated partition. fire alarm modifications under seperate permit. elevator modifications to be submitted to state elevator division

Complete
Feb 19, 2016151 03rd St

7th floor:installation of a gypsum board ceiling in a 550 sq.ft. gallery on level 7, work to include modification to existing mechanical supply diffusers and new lighting. ref. to sfmoma expansion pa#201211093987 & temp. wall pa#201507302945. n/a ordinance #155-13

Complete
May 1, 20144 Embarcadero Center

33rd floor tenant improvement of a 600 sq ft area. no structural or plumbing work. demo & patching of interior doors. walls, ceilings, & finishes, new power/data outlets & lighting. compliance with ord 155-13 not rquired

Complete
Jun 19, 2013140 New Montgomery St

21st floor tenant improvement, interior office remodel including mechanical, electrical & plumbing work, construction of non-rated partitoins & interior finishes.

Complete
Aug 1, 2008500 Treat Av

#201-tenant improvement on partial 1st floor of building, minor wall demolition and construction, rerouting/capping of outlet switches and lighting, casework renovation

Complete

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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