Demetrios K Triantafyllou

Architect · Hc Design · Sunnyvale

Public records

From the licensing board and the city of San Francisco.

The short answer

Licensed?: License activeArchitect C-14401First issued Sep 27, 1983, expires Apr 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?: 9 permits since 2019, 9 in the last 5 years. Latest filed Aug 18, 2021.
What kind of projects?: Home remodel 5 · Addition 1 · ADU 1

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.

Home remodel: 5 permits in San Francisco

From 2020 to 2021, latest filed Aug 18, 2021.

Time to get a permit

Theirs

2 months

Median from filing to permit, from 5 issued permits filed since 1966.

Where

Outer Richmond2
Russian Hill1
Outer Mission1
Bernal Heights1

Most recent

Permits

10 permits that name Demetrios K Triantafyllou, newest first, including 1 revisions or supplements that are not counted. Select a permit to see the full record.

Filed	Project	Type	Status	Time to permit
Aug 18, 2021	1165 Francisco St #0 Unit 12: remodel kitchen. demo (e) dining and living wall. add recessed lights. Issued	Home remodel	Issued	Within 1 month
Mar 22, 2021	750 35th Av Unit 750: kitchen remodel on 2nd fl by removing a wall between (e) kitchen and living room. construct new single level wood deck connects 2nd fl and a stair going to rear yard. replace (2) existing beams and several footings in garage Issued	Home remodel	Issued	2 months
Dec 8, 2020	445 Mount Vernon Av Add a detached adu at rear yard total of 800 sq.ft. one bed, one bath. Filed	New building	Filed	—
Nov 3, 2020	35 Milton St Interior remodel: 1) remodel (e) bath at 1/f 2) convert (e) bedroom #1 to (n) living room 3) remodel (e) kitchen at 2/f 4) convert (e) living room to (n) study room 5) replace (e) fireplace 6) work on ground level in separate permit Complete	Home remodel	Complete	5 months
Nov 3, 2020	562 39th Av Main house remodeling. relocated 2nd fl kitchen and add a bathroom to (e) dining room. Complete	Home remodel	Complete	2 months
Oct 3, 2020	25 Cyril Magnin St #0 Rev to pa201907035096: to show plans of work done to repair fire and water damage of non-load bearing walls and replace damaged electrical wires at corridors in basement level. includes elevator upgrades for path of travel per 11b-202.4. ref fire report 38005. maher n/a Expired	Revision or supplement	Expired	8 months
Sep 22, 2020	599 Moultrie St Main house-remove (e) partition wall @ grd flr. add (n) master bathrm @ 2nd flr. remodel master bedrm @ 2nd flr. relocate laundry rm to 2nd flr.remove closet & change (e) sitting rm to a study rm. change (e) bedrm #1 to a playrm.relocate (e) kitchen.replace (e)wood flr to new concrete slab on grade. Issued	Home remodel	Issued	7 months
Jun 3, 2020	101 Tompkins Av Replace an existing garage into a new accessory dwelling unit per ordinance no. 162-16. total of 248 sq ft. Issued	ADU	Issued	10 months
Oct 11, 2019	374 Valley St Convert single family dwelling to 2 family dweling per rh2 zoning w/ (n) (2) bedrooms, (2) baths, (1) powder room, (1) living room and (1) balconey. Filed	Commercial or tenant improvement	Filed	—
Jul 26, 2019	374 Valley St Add(n) garage. relocate furnace, water heater and washer dryer Cancelled	Addition	Cancelled	—

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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