Matthias Troitzsch
- Listed as
- architect, engineer
- Firm
- Id8bau
- Based in
- San Francisco
- On San Francisco permits
- Jan 2010 to Jul 2026
35 permits since 2000 (architect on 33 permits, engineer on 2 permits): 17 completed, 13 in progress, 2 never finaled, 3 expired or cancelled.
This is the city’s permit record, not a license check: the role and the number come from what was written on each permit (the number spelled one way). It does not show whether the license is current. How to read these records
Most recent permits
| Filed | Outcome | Address | Contractor | Work described on the permit | Declared cost |
|---|---|---|---|---|---|
| Jul 14, 2026 | In progress filed Jul 2026, not yet issued | 1275 Guerrero St | swap kitchen & dining room location, remodel bathroom; add bedroom 3 in rear of building(previous playroom), rebuild gallery level with code compliant ceiling heights & stairs, legalize all areas on level 1 that are to remain; remove bath 2; reconfigure bedroomsDetails
swap kitchen & dining room location, remodel bathroom; add bedroom 3 in rear of building(previous playroom), rebuild gallery level with code compliant ceiling heights & stairs, legalize all areas on level 1 that are to remain; remove bath 2; reconfigure bedrooms | $260,000 | |
| Jun 16, 2026 | In progress issued Jul 2026 | 57 Carmelita St | Olmec Builders Inc | revision 202510157468 to still lower courtyard at rear of building with stepped planters and stair to garden. expand basement rear area to wide propsed garden room, kitchen on first floor for bedroom 1Details
revision 202510157468 to still lower courtyard at rear of building with stepped planters and stair to garden. expand basement rear area to wide propsed garden room, kitchen on first floor for bedroom 1 | $60,000 |
| May 29, 2026 | In progress filed May 2026, not yet issued | 60 Piedmont St | Kohlmyer | create basement space at 8'4" ceiling height in parts of (e) cellar space. expand rear partition of bldg 3'93/4" to north, enlarging kitchen on level (l1). level 2 convert study & closet intro primary bathroom. l1 and l2 to attic space into playroom and storage. new staircase from basement to l2Details
create basement space at 8'4" ceiling height in parts of (e) cellar space. expand rear partition of bldg 3'93/4" to north, enlarging kitchen on level (l1). level 2 convert study & closet intro primary bathroom. l1 and l2 to attic space into playroom and storage. new staircase from basement to l2 | $400,000 |
| Apr 17, 2026 | In progress filed Apr 2026, not yet issued | 257 Hale St | Axa Construction | fill lightwell(patio) along west property line for new bath on level 2 exterior property line wall to be 1 hr fire rated and match(e) waall. roof infill to match(e) & be class b min. add 2 skylights- over corredor & over kitchen islandDetails
fill lightwell(patio) along west property line for new bath on level 2 exterior property line wall to be 1 hr fire rated and match(e) waall. roof infill to match(e) & be class b min. add 2 skylights- over corredor & over kitchen island | $25,000 |
| Jan 15, 2026 | In progress issued Jan 2026 | 257 Hale St | Axa Construction | revision to pa# 202508213577: no skylight removal as it is a lightwell. lightwell to remain. (scope reduction)Details
revision to pa# 202508213577: no skylight removal as it is a lightwell. lightwell to remain. (scope reduction) | |
| Jan 7, 2026 | In progress issued Jan 2026 | 2525 22nd Av | Mylett Construction/J Mylett, Camarina Construction Corp | revision to pa #202506259388: new wall to align with existing wall at s.w. corner, part of horizontal expansion/change walls at interior stair to kitchen/new slider patio door at n-w patio/change windows 0034 004 size(smaller) changes in layout of new bath 1 & 2, furnace & water, heater moved intoDetails
revision to pa #202506259388: new wall to align with existing wall at s.w. corner, part of horizontal expansion/change walls at interior stair to kitchen/new slider patio door at n-w patio/change windows 0034 004 size(smaller) changes in layout of new bath 1 & 2, furnace & water, heater moved into | |
| Dec 1, 2025 | Completed final sign-off Aug 2026 | 263 Hale St | Axa Construction | revision to pa # 202509125186: to document reconfiguration of level 1 habitable/conditioned space. no structural /plumbing fixture change.Details
revision to pa # 202509125186: to document reconfiguration of level 1 habitable/conditioned space. no structural /plumbing fixture change. | |
| Dec 1, 2025 | In progress issued Mar 2026 | 57 Carmelita St | Olmec Builders Inc | lower slab at ground level for new garage and additional dwelling, storage and mechanical space. install front yard garage ramp and planters. remodel main level (level 1) new kitchen and garden room. remove (e) garden room. remodel upper level (level 2) new primary bath.Details
lower slab at ground level for new garage and additional dwelling, storage and mechanical space. install front yard garage ramp and planters. remodel main level (level 1) new kitchen and garden room. remove (e) garden room. remodel upper level (level 2) new primary bath. | $545,379 |
| Sep 15, 2025 | In progress issued Sep 2025 | 3351 Jackson St | Axel8 Construction | revision to 202504164517. layout change in kitchen and pantry (scullery). pantry to be moved to south of kitchen, adjacent to primary bath. replacement of 2 windows in kitchen and 1 window in new pantry location with in-kind wood frame double-hung windows. new window locations due to layout change.Details
revision to 202504164517. layout change in kitchen and pantry (scullery). pantry to be moved to south of kitchen, adjacent to primary bath. replacement of 2 windows in kitchen and 1 window in new pantry location with in-kind wood frame double-hung windows. new window locations due to layout change. | $22,000 |
| Sep 12, 2025 | Completed final sign-off Aug 2026 | 263 Hale St | Axa Construction | garage level: add bedroom and bathroom at rear. add space under kitchen to bedroom as new study. floor in that study to be located to 7'-6" minimum ceiling height. new stair to garden and up to upper level with new deck in front of facade. upper level: new bedroom & primary suite with 3/4 bath.Details
garage level: add bedroom and bathroom at rear. add space under kitchen to bedroom as new study. floor in that study to be located to 7'-6" minimum ceiling height. new stair to garden and up to upper level with new deck in front of facade. upper level: new bedroom & primary suite with 3/4 bath. | $185,000 |
| Aug 21, 2025 | In progress issued Dec 2025 | 257 Hale St | Axa Construction | remove int. stair and fill in floor. remodel (e) bath as primary bath, add closet. add second bath. add slider door trim (n) kitchen to patio. enlarge (e) opening to living room and add (n) opening from hallway to kitchen . repair ext. siding at rear. add family room at g/f. remove skylight & infillDetails
remove int. stair and fill in floor. remodel (e) bath as primary bath, add closet. add second bath. add slider door trim (n) kitchen to patio. enlarge (e) opening to living room and add (n) opening from hallway to kitchen . repair ext. siding at rear. add family room at g/f. remove skylight & infill | $50,000 |
| Jun 25, 2025 | In progress issued Aug 2025 | 2525 22nd Av | Mylett Construction/J Mylett, Camarina Construction Corp | lower floor garage level: except for garage space (room 001). interior remodel of lowered area as shown. add south west corner expansion of the en-suite with the new deck above. acess to deck with new fren ch door in place of the window.Details
lower floor garage level: except for garage space (room 001). interior remodel of lowered area as shown. add south west corner expansion of the en-suite with the new deck above. acess to deck with new fren ch door in place of the window. | $280,000 |
| Apr 16, 2025 | In progress issued May 2025 | 3351 Jackson St | Axel8 Construction | remove staircase in laundry room nest to kitchen and fill opening. install (n) open space access stair on the west facade in side yard. remodel kitchen ,pantry , laundry , primary bath and closet, jack and jill bath and hall bath.Details
remove staircase in laundry room nest to kitchen and fill opening. install (n) open space access stair on the west facade in side yard. remodel kitchen ,pantry , laundry , primary bath and closet, jack and jill bath and hall bath. | $60,000 |
| Mar 11, 2025 | In progress issued Mar 2025 | 3633 Taraval St | change of use from general grocery (m) to arts activities (b). no construction required.Details
change of use from general grocery (m) to arts activities (b). no construction required. | ||
| May 7, 2024 | Completed final sign-off Sep 2024 | 28 05th Av | Olmec Builders Inc | work on first floor. remodel bath and adjacent powder room. move tub, vanity and toilet, infill door from hallway. replace toilet with code conforming one in powder room. replace bathroom door with pocket door.Details
work on first floor. remodel bath and adjacent powder room. move tub, vanity and toilet, infill door from hallway. replace toilet with code conforming one in powder room. replace bathroom door with pocket door. | $25,000 |
| Dec 8, 2023 | In progress filed Dec 2023, not yet issued | 2850 25th St | Olmec Builders Inc | 1.) remove existing rear yard deck and deck overhang 2.) build new deck with exterior metal spiral staircase 3.) fill in brick foundation of wood fence at the new deck and add wood fence to match (e) fence along hampshire st 4.) add new yard gate next to garageDetails
1.) remove existing rear yard deck and deck overhang 2.) build new deck with exterior metal spiral staircase 3.) fill in brick foundation of wood fence at the new deck and add wood fence to match (e) fence along hampshire st 4.) add new yard gate next to garage | $39,000 |
| Apr 28, 2023 | Expired or cancelled expired Mar 2026 | 2850 25th St | Olmec Builders Inc | rev to pa #202301130182 & 202211015676, adjustment & wall locations on lvl 2 (l2)- adjusted structural drawings accordingly, exstg bldg length shortened by 4 5/8", change proposed frnech door at bedroom #2 on lvl 2 to door & window, straighten master bath wall, remove proposed window over bed (rev1)Details
rev to pa #202301130182 & 202211015676, adjustment & wall locations on lvl 2 (l2)- adjusted structural drawings accordingly, exstg bldg length shortened by 4 5/8", change proposed frnech door at bedroom #2 on lvl 2 to door & window, straighten master bath wall, remove proposed window over bed (rev1) | |
| Feb 23, 2023 | Completed final sign-off Sep 2023 | 1957 Turk St | demo kitchen, enlarge (e) opening from hall to dining room, add new kitchen opening remodel kitchen, convert laundry room to master bathroom closing off kitchen opening and adding a walk trough closet from master bedroom, relocate (e) toielte create new laundry roomDetails
demo kitchen, enlarge (e) opening from hall to dining room, add new kitchen opening remodel kitchen, convert laundry room to master bathroom closing off kitchen opening and adding a walk trough closet from master bedroom, relocate (e) toielte create new laundry room | $12,000 | |
| Nov 1, 2022 | Expired or cancelled expired Mar 2026 | 2850 25th St | Olmec Builders Inc | remodel of lower unit: convert front double parlon into master bed _ bathroom + closet. adjust adjacent 2 bedroom sizes, open rear area as kitchen, dining, living space. remove rear wall windows and doors and repalce with new ones. new folding door at lower level, new french and regular door @ upperDetails
remodel of lower unit: convert front double parlon into master bed _ bathroom + closet. adjust adjacent 2 bedroom sizes, open rear area as kitchen, dining, living space. remove rear wall windows and doors and repalce with new ones. new folding door at lower level, new french and regular door @ upper | $80,000 |
| Jan 29, 2020 | Completed final sign-off Aug 2020 | 1466 46th Av | The Hawthorne Company | revision to pa #2019-0419-8457: remove wall segment on line 6 btw line a & line a.1. build new exterior wall on line 8 btw a & a.1. add glass sliding door. add hydronic heating (radiant floor heat) to (e) sunroom 104, proposed home office 106 & (e)sunroom 206 (378 sq ft).Details
revision to pa #2019-0419-8457: remove wall segment on line 6 btw line a & line a.1. build new exterior wall on line 8 btw a & a.1. add glass sliding door. add hydronic heating (radiant floor heat) to (e) sunroom 104, proposed home office 106 & (e)sunroom 206 (378 sq ft). | $20,000 |
| Apr 19, 2019 | Completed final sign-off Aug 2020 | 1466 46th Av | The Hawthorne Company | remove (e) garden addition/lean-to east of line 6. rebuild addition/lean-to in similar configuration but approx 48" deeper into garden (eastward) to align w/ south neighbor's face of garden wall of rear addition.Details
remove (e) garden addition/lean-to east of line 6. rebuild addition/lean-to in similar configuration but approx 48" deeper into garden (eastward) to align w/ south neighbor's face of garden wall of rear addition. | $38,000 |
| Jan 17, 2019 | Completed final sign-off Aug 2020 | 1466 46th Av | The Hawthorne Company | revision to app#201811054934. change location of wall dividing garage and proposed den and bathroom. remove 2 windows on inside of lower level sunroom and replace with french door. replace insufficient sog on lower level. remove door and window in kitchen, replace with door.Details
revision to app#201811054934. change location of wall dividing garage and proposed den and bathroom. remove 2 windows on inside of lower level sunroom and replace with french door. replace insufficient sog on lower level. remove door and window in kitchen, replace with door. | $25,000 |
| Nov 5, 2018 | Completed final sign-off Aug 2020 | 1466 46th Av | The Hawthorne Company | interior remodel only. garag remove post and transfer loads via new beams & posts. add staircase connection from garage to upper level. remodel walls in garage and add bathroom. upper level - remodel kitchen and dining r, remodel bathroomDetails
interior remodel only. garag remove post and transfer loads via new beams & posts. add staircase connection from garage to upper level. remodel walls in garage and add bathroom. upper level - remodel kitchen and dining r, remodel bathroom | $125,000 |
| Jan 30, 2018 | Completed final sign-off Apr 2018 | 2108 Chestnut St | Napa County Builders | convert storage room into 3 fitting rooms (1 ada comp). provide 1 hr rated egress hallway. change entry mosaic & paint logo of business on facade maher naDetails
convert storage room into 3 fitting rooms (1 ada comp). provide 1 hr rated egress hallway. change entry mosaic & paint logo of business on facade maher na | $20,000 |
| Aug 16, 2017 | Completed final sign-off Jan 2019 | 1030 Washington St | Alsterlind Construction Inc. | commercial space renovation for new cafe at gr fl. new kitchen, 2296 sq ft space.Details
commercial space renovation for new cafe at gr fl. new kitchen, 2296 sq ft space. | $20,500 |
| Jul 6, 2017 | Expired or cancelled withdrawn Nov 2019 | 357 Cumberland St | horizontal extension (& excavation in garage) 1st basement. vertical addition for (n) 3rd story renovation on all floors.Details
horizontal extension (& excavation in garage) 1st basement. vertical addition for (n) 3rd story renovation on all floors. | $200,000 | |
| May 13, 2015 | Never finaled issued Jun 2015, no final | 198 Waterville St | Egoodat Inc | alter bathroom (hear office) with new wall + 1 (n) toilet + 1 (n) sinks. demo: brick planter and patch flooring; built-in wood bench; alter kitchen wall. install exterior window grates @ north coutyard; fireplace screen; (n) wood & tile flrng electr: (n) bathrm fan, replace lights & switches,Details
alter bathroom (hear office) with new wall + 1 (n) toilet + 1 (n) sinks. demo: brick planter and patch flooring; built-in wood bench; alter kitchen wall. install exterior window grates @ north coutyard; fireplace screen; (n) wood & tile flrng electr: (n) bathrm fan, replace lights & switches, | $18,500 |
| May 13, 2015 | Completed final sign-off Aug 2015 | 198 Waterville St | Egoodat Inc | change use from clubhouse to preschool. no construction. (n) non publice acc. use by sf planning base on (e) use for prechool related. project found approvable administratively w/o need for c.u. auth. per dan sider, sf planning small projects team. ref bpa# 201505136231.no constr for record only.Details
change use from clubhouse to preschool. no construction. (n) non publice acc. use by sf planning base on (e) use for prechool related. project found approvable administratively w/o need for c.u. auth. per dan sider, sf planning small projects team. ref bpa# 201505136231.no constr for record only. | |
| Dec 23, 2014 | Completed final sign-off Aug 2019 | 35 Rutledge St | Cullinane Plastering | demolish 1 story garage.Details
demolish 1 story garage. | $7,000 |
| Dec 23, 2014 | Never finaled issued Mar 2017, no final | 37 Rutledge St | Cullinane Plastering | demolish 2 story single family house.Details
demolish 2 story single family house. | $15,000 |
| Dec 23, 2014 | Completed final sign-off Aug 2019 | 35 Rutledge St | Cullinane Plastering | to erect 3 stories, no basement, type vb, single family residence.Details
to erect 3 stories, no basement, type vb, single family residence. | $350,000 |
| Dec 23, 2014 | Completed final sign-off Aug 2019 | 37 Rutledge St | Cullinane Plastering | to erect 4 stories, 1 basement, type vb, single family residence.Details
to erect 4 stories, 1 basement, type vb, single family residence. | $350,000 |
| Sep 9, 2013 | Completed final sign-off Aug 2014 | 346 Fair Oaks St | Jetton Construction | reroof siding replacement,sedect areas, repair front windws at req.,replace rear window with in kin, replace 3 beams lower sog, add bath, relocate kitchen, raise lower dlg. where shown. new hydronic floor heating, improve insulation,various trim, drywall improvement, new electrical and lighting.Details
reroof siding replacement,sedect areas, repair front windws at req.,replace rear window with in kin, replace 3 beams lower sog, add bath, relocate kitchen, raise lower dlg. where shown. new hydronic floor heating, improve insulation,various trim, drywall improvement, new electrical and lighting. | $650,000 |
| Feb 20, 2013 | Completed final sign-off Aug 2014 | 346 Fair Oaks St | Jetton Construction | horizontal expansion of east ext. wall of master bedroom on top level by 7'-6" eastwards. reroofing of top level roof & addition of deck over that roof.Details
horizontal expansion of east ext. wall of master bedroom on top level by 7'-6" eastwards. reroofing of top level roof & addition of deck over that roof. | $25,000 |
| Jan 15, 2010 | Completed final sign-off Aug 2010 | 2331 Bryant St | Amber Construction | replace foundation wall in rear of building with new footing and foundation wall to 8" min above top of concrete slab aove grade. replace all rotten lumber w pressure treated. refinish cement coating of some foundation walls.Details
replace foundation wall in rear of building with new footing and foundation wall to 8" min above top of concrete slab aove grade. replace all rotten lumber w pressure treated. refinish cement coating of some foundation walls. | $21,000 |