Killian O'sullivan
- Listed as
- architect, engineer
- Firm
- Osa
- Based in
- San Francisco
- On San Francisco permits
- Mar 2006 to Aug 2026
35 permits since 2000 (architect on 34 permits, engineer on 1 permit): 25 completed, 2 in progress, 3 never finaled, 5 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 |
|---|---|---|---|---|---|
| Aug 26, 2026 | In progress issued Sep 2026 | 195 San Leandro Wy | Rod Heisler Construction | pool removal & interior remodel to (e) second kitchen.Details
pool removal & interior remodel to (e) second kitchen. | $70,000 |
| Mar 15, 2026 | In progress issued Aug 2026 | 293 Jersey St | Kieran O'carroll Construction | 2-story horizontal addition at the rear and side. kitchen remodel and new powder room on 2/f. new bedroom and remodeled bathrooms on 3/f. removed powder and enclosed laundry on 1/f. new front door and openings.Details
2-story horizontal addition at the rear and side. kitchen remodel and new powder room on 2/f. new bedroom and remodeled bathrooms on 3/f. removed powder and enclosed laundry on 1/f. new front door and openings. | $600,000 |
| Jun 24, 2022 | Never finaled issued Jun 2022, no final | 195 San Leandro Wy | Larkspur Builders Inc. | new photovoltaic solar panels; new painted metal gutters matching profile of (e) degraded wood gutters; removal of existing unreinforced brick chimney; new ac shingle roofDetails
new photovoltaic solar panels; new painted metal gutters matching profile of (e) degraded wood gutters; removal of existing unreinforced brick chimney; new ac shingle roof | $20,000 |
| May 12, 2022 | Completed final sign-off Jun 2026 | 1505 Dolores St | Kieran O'carroll Construction | horizontal addition at rear of (e) house including kitech remodel, added work room, bathroom & home office. (n) rear deck & stairs. (n) roof deck.Details
horizontal addition at rear of (e) house including kitech remodel, added work room, bathroom & home office. (n) rear deck & stairs. (n) roof deck. | $225,000 |
| Dec 7, 2021 | Completed final sign-off Jul 2023 | 195 San Leandro Wy | Larkspur Builders Inc. | 1st fl: powder, kitchen, breakfast, laundry, dining & family rm renovated; powder & storage added. door & window to atrium added, door to side yard added. 2nd fl: (3) baths renovated, bath & laundry room added, closets removed & closet. (3) skylights added, (2) skylights removed. update mech & eleDetails
1st fl: powder, kitchen, breakfast, laundry, dining & family rm renovated; powder & storage added. door & window to atrium added, door to side yard added. 2nd fl: (3) baths renovated, bath & laundry room added, closets removed & closet. (3) skylights added, (2) skylights removed. update mech & ele | $375,000 |
| Aug 2, 2021 | Completed final sign-off Apr 2024 | 2475 Harrison St | Larkspur Builders Inc. | horizontal addition at 3rd flr. (n) rated window at prop-line at north side on 2nd flr. 2 (n) bedrms, (n) bath & (n) laundry at 3rd flr. enlarged fam rom, kitchen & dining rm, (n) powder rm & storage rmDetails
horizontal addition at 3rd flr. (n) rated window at prop-line at north side on 2nd flr. 2 (n) bedrms, (n) bath & (n) laundry at 3rd flr. enlarged fam rom, kitchen & dining rm, (n) powder rm & storage rm | $500,000 |
| Feb 3, 2021 | Completed final sign-off Nov 2023 | 20 Eastwood Dr | Sunset Builders Llc. | remodel kitchen & bathroom, add new bath at upper/main level. add new stairs to (e) lower level. new office & bedroom at lower level with new space at family room infill under (e) bay. 42 sq ft added w/ 470 sq ft increase to conditioned space.Details
remodel kitchen & bathroom, add new bath at upper/main level. add new stairs to (e) lower level. new office & bedroom at lower level with new space at family room infill under (e) bay. 42 sq ft added w/ 470 sq ft increase to conditioned space. | $450,000 |
| Dec 14, 2020 | Expired or cancelled expired Nov 2024 | 564 Liberty St | new powder room at main level. new closets & bathroom at existing bedroom at upper level. new skylight at upper level bathroom. electrical upgrades at area of work & adjacent areas. gas line for future furnace. structural work associated w/these improvements.Details
new powder room at main level. new closets & bathroom at existing bedroom at upper level. new skylight at upper level bathroom. electrical upgrades at area of work & adjacent areas. gas line for future furnace. structural work associated w/these improvements. | $55,000 | |
| Dec 14, 2020 | Expired or cancelled expired Jun 2026 | 1505 Dolores St | new enclosed storage room at location of part of existing garage/storage space on 1st floor. new outlets at existing shed and new gas line for future connection at kitchen.Details
new enclosed storage room at location of part of existing garage/storage space on 1st floor. new outlets at existing shed and new gas line for future connection at kitchen. | $15,000 | |
| Jun 17, 2019 | Completed final sign-off Nov 2019 | 572 Liberty St | Woodteck Construction, Llc | (n) closet and bathroom at (e) bedroom. (n) non- structural partitions. update to lighting and power at closet and (e) bedroom. new skylight, lighting and power at new bathroom. no change to envelope.Details
(n) closet and bathroom at (e) bedroom. (n) non- structural partitions. update to lighting and power at closet and (e) bedroom. new skylight, lighting and power at new bathroom. no change to envelope. | $35,000 |
| Sep 18, 2017 | Completed final sign-off Mar 2020 | 35 Alma St | Kieran O'carroll Construction | (n)horizontal addition to the rear of (e) single fam home. enlarge kitchen and (n) powder on the main level, (n) master bed on the upper level and a (n) bed and bath on the lower level. (n) roof deck with access skylight to be built along with (n) deck and access stairs @ garden level.Details
(n)horizontal addition to the rear of (e) single fam home. enlarge kitchen and (n) powder on the main level, (n) master bed on the upper level and a (n) bed and bath on the lower level. (n) roof deck with access skylight to be built along with (n) deck and access stairs @ garden level. | $750,000 |
| Aug 29, 2017 | Completed final sign-off Mar 2019 | 2261 Cecilia Av | Alpha Construction & Engineering Inc. | remodel of (e) two story house - no change to building envelope: at lower level project will consist of a (n) bathroom & family rm. (e) bedrm & bath are to be moved. (e) overhang below upper level to be infilled for garage door. (n) rear deck and stairs to be constructed as shown on plans.Details
remodel of (e) two story house - no change to building envelope: at lower level project will consist of a (n) bathroom & family rm. (e) bedrm & bath are to be moved. (e) overhang below upper level to be infilled for garage door. (n) rear deck and stairs to be constructed as shown on plans. | $250,000 |
| Dec 1, 2016 | Expired or cancelled cancelled Feb 2021 | 572 Liberty St | new horizontal addition to rear at(e) lower level. add a new bathrm, fam rm bedrom & storage. new rear decks & stairs to be built at the main (2nd) level & lower (1st) level. new landscaping @ rear yard, no change at upper level or to street elevationDetails
new horizontal addition to rear at(e) lower level. add a new bathrm, fam rm bedrom & storage. new rear decks & stairs to be built at the main (2nd) level & lower (1st) level. new landscaping @ rear yard, no change at upper level or to street elevation | $350,000 | |
| Nov 21, 2016 | Completed final sign-off Feb 2017 | 1056 Cole St | Grand Finishes | new bathroom at location of existing closet and bedroom, update tub in (e) bathroom.Details
new bathroom at location of existing closet and bedroom, update tub in (e) bathroom. | $50,200 |
| Aug 24, 2016 | Completed final sign-off Nov 2016 | 572 Liberty St | Woodteck Construction, Llc | new closets at extg bedrooms. new non-structural partitions and removal of extg non-structural partitions. update to lighting, power and finishes at extg bedrooms.Details
new closets at extg bedrooms. new non-structural partitions and removal of extg non-structural partitions. update to lighting, power and finishes at extg bedrooms. | $30,000 |
| May 1, 2014 | Never finaled issued May 2014, no final | 533 Noe St | Custom Construction Enterprises | renovation of existing single family house, renovate bathroom includes enclosing of (e) lightwell, not visible from adjacent properties, add a new bathroom at an (e) closet, enlarge (e) closet, new parapet adjacent to new skylight.Details
renovation of existing single family house, renovate bathroom includes enclosing of (e) lightwell, not visible from adjacent properties, add a new bathroom at an (e) closet, enlarge (e) closet, new parapet adjacent to new skylight. | $65,000 |
| Mar 15, 2012 | Completed final sign-off Aug 2012 | 36 Alma St | Pegasus Building/Castle Construction | changes to upper unit of 2 unit bldg. new master bath & closet @ (e) room. renovate and revisions to existing split bath. new opening between dining & living room. relocate washer/dryer to (e) laundry. no change to area of unit. no habitable space at garage level. new skylight @ new maser bath.Details
changes to upper unit of 2 unit bldg. new master bath & closet @ (e) room. renovate and revisions to existing split bath. new opening between dining & living room. relocate washer/dryer to (e) laundry. no change to area of unit. no habitable space at garage level. new skylight @ new maser bath. | $53,000 |
| Dec 7, 2011 | Completed final sign-off Dec 2012 | 572 Liberty St | Custom Construction Enterprises | new vertical addition at existing kitchen -no square footage added - updated kitchen with new powder room at main (2nd) level. updated bathroom with new windows at upper level. vertical addition will not add to overall height.Details
new vertical addition at existing kitchen -no square footage added - updated kitchen with new powder room at main (2nd) level. updated bathroom with new windows at upper level. vertical addition will not add to overall height. | $70,000 |
| Jul 22, 2011 | Completed final sign-off Jan 2012 | 1505 Dolores St | revision to pa #201103152107: conversion of e permitted space under permit pa #201103152107 to habitable space; new family room, home office, bath to be added. no change to exterior envelope.Details
revision to pa #201103152107: conversion of e permitted space under permit pa #201103152107 to habitable space; new family room, home office, bath to be added. no change to exterior envelope. | $25,000 | |
| Mar 30, 2011 | Completed final sign-off Sep 2011 | 302 Eureka St | Moroso Construction Inc | 2nd fl: ex laundry room to be converted to home office with new double pane exterior doors, windows and skylight existing bath to be converted to home office. existing wc to be converted to powder room with n handwash basin. new lighting added, e bldg envelope to remain.all at rearDetails
2nd fl: ex laundry room to be converted to home office with new double pane exterior doors, windows and skylight existing bath to be converted to home office. existing wc to be converted to powder room with n handwash basin. new lighting added, e bldg envelope to remain.all at rear | $12,500 |
| Feb 22, 2011 | Completed final sign-off Aug 2012 | 325 27th St | Cairn Construction | vertical additon. updated kitchen & powder room, layout, add bathroom&bedroom at upper level (no additional square footage). new siding & replacement windows at rear. new roof & front wall at street side of upper floor where vertical additions are to be added.Details
vertical additon. updated kitchen & powder room, layout, add bathroom&bedroom at upper level (no additional square footage). new siding & replacement windows at rear. new roof & front wall at street side of upper floor where vertical additions are to be added. | $150,000 |
| Dec 30, 2010 | Completed final sign-off Mar 2014 | 2660 Harrison St | 1 story addition over part of (e) 2 stories building new residential at 2nd & 3rd floor. (3 units) existing workshop to remain. new separate parking for residences.Details
1 story addition over part of (e) 2 stories building new residential at 2nd & 3rd floor. (3 units) existing workshop to remain. new separate parking for residences. | $1,300,000 | |
| Mar 5, 2009 | Completed final sign-off Feb 2010 | 2254 Green St | Moroso Construction Inc | revision to pa# 2008-0827-0164/s1-revised foundation designDetails
revision to pa# 2008-0827-0164/s1-revised foundation design | |
| Aug 27, 2008 | Completed final sign-off Feb 2010 | 2254 Green St | Moroso Construction Inc | new 2 story addition to rear of (e) house. interior renovations to (e). new rear decksDetails
new 2 story addition to rear of (e) house. interior renovations to (e). new rear decks | $200,000 |
| May 16, 2008 | Completed final sign-off Mar 2009 | 999 Green St | #1204 on the 12th floor. addition of door to ex. bedroom, construction of new wall and new pocket to create a new denDetails
#1204 on the 12th floor. addition of door to ex. bedroom, construction of new wall and new pocket to create a new den | $5,000 | |
| Feb 8, 2008 | Completed final sign-off Jun 2008 | 117 Noe St | renovation of ex. upper unit. demo wall separating hallway and lounge and combine the two rms into one. demo the wall between stairs and hallway.Details
renovation of ex. upper unit. demo wall separating hallway and lounge and combine the two rms into one. demo the wall between stairs and hallway. | $18,000 | |
| Nov 2, 2007 | Completed final sign-off Apr 2008 | 162 08th Av | replacement of existing non-conforming stairs with similar stairs to match. stair components will be upgrade where possible.Details
replacement of existing non-conforming stairs with similar stairs to match. stair components will be upgrade where possible. | $8,000 | |
| Aug 24, 2007 | Completed final sign-off Oct 2007 | 119 Noe St | revision to appl#200705211864 revise detail @ (n) beam in garage/basement. spread footing replacing originally designated helical piers per plan.Details
revision to appl#200705211864 revise detail @ (n) beam in garage/basement. spread footing replacing originally designated helical piers per plan. | $2,500 | |
| Aug 2, 2007 | Completed final sign-off Apr 2008 | 999 Green St | unit #3105 - renovation of existing 2 bedroom apartment including renovate kitchtn & bathrooms. design build repalcement of (e) windows.Details
unit #3105 - renovation of existing 2 bedroom apartment including renovate kitchtn & bathrooms. design build repalcement of (e) windows. | $120,000 | |
| Jul 26, 2007 | Expired or cancelled expired Mar 2011 | 1347 04th Av | R C Wilson Construction Inc | interior renovations and minor addition to (e) single family house. new two level rear deck.Details
interior renovations and minor addition to (e) single family house. new two level rear deck. | $95,000 |
| Mar 16, 2007 | Expired or cancelled expired Mar 2010 | 3674 22nd St | interior renovations to (e) single family house no change to exterior elevations of building. (e) room @ lower level to be converted to bedroom.Details
interior renovations to (e) single family house no change to exterior elevations of building. (e) room @ lower level to be converted to bedroom. | $80,000 | |
| Feb 16, 2007 | Completed final sign-off Jun 2008 | 2475 Harrison St | horizontal and vertical addition and renovate existing single family home. the project will add 1 garden apt to the rear and enlarge (e) main unit.Details
horizontal and vertical addition and renovate existing single family home. the project will add 1 garden apt to the rear and enlarge (e) main unit. | $225,000 | |
| Oct 3, 2006 | Completed final sign-off May 2007 | 744 Union St | bathroom renovation, new kitchen & general interior cosmetic upgrade, update lighting, no structural work.Details
bathroom renovation, new kitchen & general interior cosmetic upgrade, update lighting, no structural work. | $40,000 | |
| Jul 7, 2006 | Never finaled issued Jul 2006, no final | 1285 04th Av | remodel existing kitchen, new cabs,lights, opening up of wall to dining roomDetails
remodel existing kitchen, new cabs,lights, opening up of wall to dining room | $20,000 | |
| Mar 8, 2006 | Completed final sign-off Jun 2007 | 29 Gladys St | horizontal addition to front w/storage room adjecent to garage space @ ground floor. & (n) living room @ main level.Details
horizontal addition to front w/storage room adjecent to garage space @ ground floor. & (n) living room @ main level. | $50,000 |