Sf Twin Boys Corp. Dba Master Builders
- Based in
- San Francisco
- On San Francisco permits
- Dec 2004 to Apr 2026
- Last 24 months
- 7 permits filed
198 permits since 2000: 167 completed, 4 in progress, 15 never finaled, 12 expired or cancelled.
Of the 15 never-finaled permits, 2 are 3 to 5 years old, 6 are 5 to 10 years old, 7 are over 10 years old. 2 were filed but never issued.
This is the city’s permit record, not a license check. It does not show whether the state license is active, bonded or insured. How to read these records
Permits filed each year
How long permits take
Each point is the quarter the permits were filed, for stairs across San Francisco. A median counts only permits that have finished, so the shaded recent quarters look faster than they will end up: their slow permits have not finished yet. Hover a point for the slowest 10%. Gaps mean fewer than 5 permits. A rise in the issue line is the city’s review backlog, not the contractor.
Stairs permits
34 stairs permits: 28 completed, 2 in progress, 3 never finaled, 1 expired or cancelled. Typically 8 days from filing to permit and 254 days from permit to final inspection.
| Filed | Outcome | Address | Work described on the permit | Declared cost |
|---|---|---|---|---|
| Mar 10, 2026 | In progress issued Mar 2026 | 348 Chestnut St | 1st flr: convert (e) kitchen to masterbedroom w/full bath. relocate kitchen to living room. relocate half bath and narrow (e) interior stair from 45" to 36" & build counter above. lower flr: add full bath and walk in closet to bedroom#3. remodel (e) full bath #2 add stair to laundry room andDetails
1st flr: convert (e) kitchen to masterbedroom w/full bath. relocate kitchen to living room. relocate half bath and narrow (e) interior stair from 45" to 36" & build counter above. lower flr: add full bath and walk in closet to bedroom#3. remodel (e) full bath #2 add stair to laundry room and | $75,000 |
| Aug 25, 2025 | Completed final sign-off Sep 2025 | 647 Athens St | replace damaged siding west (rear) property 8'x20' linear ft in kind. remove non-structural concrete curb adjacent to the rear wall approx. 5"x5", 20 linear ft. replace damaged rear property siding east (front) by the main stairs in kind, like for like - 1 board at the bottom.Details
replace damaged siding west (rear) property 8'x20' linear ft in kind. remove non-structural concrete curb adjacent to the rear wall approx. 5"x5", 20 linear ft. replace damaged rear property siding east (front) by the main stairs in kind, like for like - 1 board at the bottom. | $5,000 |
| Jul 30, 2025 | In progress issued Dec 2025 | 642 Lombard St | rear bldg: add 2 adu, local adu program per planning code section 207.1 exterior work includes new egress stair and landing at center of lot and replacement of front gate. response to complaint 202422936 and 201902761.Details
rear bldg: add 2 adu, local adu program per planning code section 207.1 exterior work includes new egress stair and landing at center of lot and replacement of front gate. response to complaint 202422936 and 201902761. | $80,000 |
| Aug 8, 2022 | Completed final sign-off Oct 2022 | 1943 Stockton St | (front building) revision to pa# 202205134224. minor structural revision. include 1 stair detail (9/s3.3)Details
(front building) revision to pa# 202205134224. minor structural revision. include 1 stair detail (9/s3.3) | |
| Aug 8, 2022 | Completed final sign-off Dec 2022 | 1943 Stockton St | (rear building) revision to pa# 202202228424. minor structural revision. retaining wall and stair detail.Details
(rear building) revision to pa# 202202228424. minor structural revision. retaining wall and stair detail. | $3,500 |
| Jul 26, 2022 | Completed final sign-off Jan 2023 | 348 Chestnut St | repair (e) roofing waterproofing surface, add (n0 windows to (e) stair penthouse. replace (e)42" high metal & siding railing w/ 42" glass railing. add (n) gas fire bbq, fridge, sink cabinet on casters (not exceed height of (e) parapetDetails
repair (e) roofing waterproofing surface, add (n0 windows to (e) stair penthouse. replace (e)42" high metal & siding railing w/ 42" glass railing. add (n) gas fire bbq, fridge, sink cabinet on casters (not exceed height of (e) parapet | $12,000 |
| May 13, 2022 | Completed final sign-off Oct 2022 | 1943 Stockton St | front bldg: revision to 202202077497: repair residential concrete stair at rear less than 50% of structure. provide surface coating at basement wall.Details
front bldg: revision to 202202077497: repair residential concrete stair at rear less than 50% of structure. provide surface coating at basement wall. | $800 |
| Feb 22, 2022 | Completed final sign-off Dec 2022 | 1943 Stockton St | at rear cottage only: reinforce floor joist at 2nd floor: reinforce/repair foundation; reinforce joists and remove posts at extg balcony; repair/replace extg wood and concreate stair with new concrete stair.Details
at rear cottage only: reinforce floor joist at 2nd floor: reinforce/repair foundation; reinforce joists and remove posts at extg balcony; repair/replace extg wood and concreate stair with new concrete stair. | $35,000 |
| Oct 2, 2020 | Completed final sign-off Mar 2021 | 1639 Washington St | 1639 in-kind; replace (8) interior doors and (1) door to emergency stairs; in existing openings; replace engineered wood flooring; remodel (3) bathrooms (ba1: 4'x8'; ba2: 5'x5'; ba3: 5'x5') all with (n) toilets, sinks, showers; replace old furnace and old water heater. all work in kind.Details
1639 in-kind; replace (8) interior doors and (1) door to emergency stairs; in existing openings; replace engineered wood flooring; remodel (3) bathrooms (ba1: 4'x8'; ba2: 5'x5'; ba3: 5'x5') all with (n) toilets, sinks, showers; replace old furnace and old water heater. all work in kind. | $60,000 |
| Jul 13, 2020 | Completed final sign-off Nov 2020 | 1637 Washington St | #1637: replace (8)interior doors and (1) door to emergency stairs, in existing openings. replace engineered wood flooring. remodel three bathrooms (bathroom 1: 4' x 8'; bathroom 2: 5' x 5'; bathroom 3: 5' x 5') all bathrooms with new toilets, sinks, showers, all in kind.Details
#1637: replace (8)interior doors and (1) door to emergency stairs, in existing openings. replace engineered wood flooring. remodel three bathrooms (bathroom 1: 4' x 8'; bathroom 2: 5' x 5'; bathroom 3: 5' x 5') all bathrooms with new toilets, sinks, showers, all in kind. | $18,000 |
| Aug 16, 2018 | Completed final sign-off Sep 2024 | 1845 Grant Av | renovation of (e) 1617 sq ft 3rd fl unit - kitchen, bathroom 1&2, (n) spiral stairs & (n) penthouse at roof, renovation of (e) penthouse, (n) 240 sq ft roof deck.Details
renovation of (e) 1617 sq ft 3rd fl unit - kitchen, bathroom 1&2, (n) spiral stairs & (n) penthouse at roof, renovation of (e) penthouse, (n) 240 sq ft roof deck. | $150,000 |
| Jul 12, 2017 | Completed final sign-off Aug 2018 | 460 Vallejo St | revision to pa #201512165310 - relocate (e) stair between 3rd floor & private roof deck; add (n) 1/2 bath at garage, add bedroom and bath at 2nd floor; add wood paneling to front facade at 1st floor; add parapet at stair opening, ref pa# 201609147636Details
revision to pa #201512165310 - relocate (e) stair between 3rd floor & private roof deck; add (n) 1/2 bath at garage, add bedroom and bath at 2nd floor; add wood paneling to front facade at 1st floor; add parapet at stair opening, ref pa# 201609147636 | $2,500 |
| Jul 11, 2017 | Completed final sign-off Mar 2018 | 2159 California St | revision to app#201612285999. relocate electrical panel. unit 8: eliminate window and change furnace location. unit 9a: replace interior stair in kind, change window type . retain chimneys thoughout, retain crawlspace at entry.Details
revision to app#201612285999. relocate electrical panel. unit 8: eliminate window and change furnace location. unit 9a: replace interior stair in kind, change window type . retain chimneys thoughout, retain crawlspace at entry. | |
| May 26, 2017 | Completed final sign-off Mar 2022 | 506 Vallejo St | add garage at (e) 1st floor and stair down from sidewalk. sprinkler entire garage with nfpa13 sprinkler systemDetails
add garage at (e) 1st floor and stair down from sidewalk. sprinkler entire garage with nfpa13 sprinkler system | $70,000 |
| Aug 18, 2016 | Completed final sign-off May 2017 | 28 Sonoma St | front bldg - replace access (to existing roof deck) with (n) stair at existing interior stairway. to complete work started under pa#2015-0526-7130 (address 1327-1329 kearny, now lot being splitted to read 28-30 sonoma) for removal of non-conforming connecting stairs at rear of property.Details
front bldg - replace access (to existing roof deck) with (n) stair at existing interior stairway. to complete work started under pa#2015-0526-7130 (address 1327-1329 kearny, now lot being splitted to read 28-30 sonoma) for removal of non-conforming connecting stairs at rear of property. | $9,500 |
| Jul 15, 2016 | Completed final sign-off May 2023 | 942 Noe St | addition to rear of buidling @ (e) 1st & 2nd floors. interior remodel of (e) kitchen. add 2 bathrooms with shower. add guard rail @ front stair for safety.Details
addition to rear of buidling @ (e) 1st & 2nd floors. interior remodel of (e) kitchen. add 2 bathrooms with shower. add guard rail @ front stair for safety. | $88,000 |
| May 26, 2015 | Completed final sign-off Sep 2015 | 1327 Kearny St | front bldg -construct 6' fence at rear yard; add 1/2 bath at 1st floor; demo (e) common connecting stairs & replace private stair leading to 1st floor of 1327 - 1329 kearny to comply with pre-applicatoin meeting dated march 13, 2013; ab-009 add property line windows.Details
front bldg -construct 6' fence at rear yard; add 1/2 bath at 1st floor; demo (e) common connecting stairs & replace private stair leading to 1st floor of 1327 - 1329 kearny to comply with pre-applicatoin meeting dated march 13, 2013; ab-009 add property line windows. | $14,500 |
| May 5, 2015 | Never finaled issued May 2019, no final | 30 Edith St | admin permit to clarify&correct desc of work,unit ct&occu as apprvd on plang entitle2008-12-31-9407.scope work to read:alter/remodel(e)sfd to add 2 more units(fr 1to3 units,r-3 to r-2)&1 new flr w/roof deck.total 3 fls.incl hori add,new stair&elev to roof per plan.cfc to be issued under this permitDetails
admin permit to clarify&correct desc of work,unit ct&occu as apprvd on plang entitle2008-12-31-9407.scope work to read:alter/remodel(e)sfd to add 2 more units(fr 1to3 units,r-3 to r-2)&1 new flr w/roof deck.total 3 fls.incl hori add,new stair&elev to roof per plan.cfc to be issued under this permit | |
| Aug 6, 2014 | Completed final sign-off Jan 2018 | 533 Greenwich St | rear bldg:minor revision to app#201307121708. scope of revision: interior wall and spiral stair reconfiguration. property line window reconfiguration.Details
rear bldg:minor revision to app#201307121708. scope of revision: interior wall and spiral stair reconfiguration. property line window reconfiguration. | $1,000 |
| Jul 8, 2014 | Completed final sign-off Dec 2014 | 1864 Stockton St | minor structural revision to 201307010859 s1 add opening for new stair with access hatch; infill lightwell at blank wall; reduce scope of interior modification at 3rd flDetails
minor structural revision to 201307010859 s1 add opening for new stair with access hatch; infill lightwell at blank wall; reduce scope of interior modification at 3rd fl | $4,800 |
| Apr 11, 2014 | Completed final sign-off Jan 2016 | 533 Greenwich St | minor structural revision to 201307121708. add slab detail. repair/replace (e) wood stair in kind (hand rails, rise, run, stringer support; not visible from street)Details
minor structural revision to 201307121708. add slab detail. repair/replace (e) wood stair in kind (hand rails, rise, run, stringer support; not visible from street) | $3,500 |
| Feb 5, 2014 | Completed final sign-off Feb 2015 | 341 Filbert St | add private roof deck and stair access for 341 only. add 1/2 bath at 4th fl. minor interior alteration at (e) dining roomDetails
add private roof deck and stair access for 341 only. add 1/2 bath at 4th fl. minor interior alteration at (e) dining room | $20,000 |
| Jul 18, 2013 | Completed final sign-off Apr 2015 | 1835 Grant Av | rear bldg-reconfigfure (e) non conforming egress stairs in order to increase safety & comply with codeDetails
rear bldg-reconfigfure (e) non conforming egress stairs in order to increase safety & comply with code | $10,000 |
| Aug 30, 2012 | Completed final sign-off Jul 2023 | 324 05th St | proposed alteration of existing bldg. relocate (e) stairs to meet accessible entrace. new accessible restrooms, new lighting const and new roof deck and skylights. convert 2/f to a new residential dwelling unit. compliance w/ ordinance no. 155-13 not required. excavation <50 cu b.Details
proposed alteration of existing bldg. relocate (e) stairs to meet accessible entrace. new accessible restrooms, new lighting const and new roof deck and skylights. convert 2/f to a new residential dwelling unit. compliance w/ ordinance no. 155-13 not required. excavation <50 cu b. | $100,000 |
| Jul 5, 2012 | Completed final sign-off Apr 2016 | 1763 Stockton St | replace all (e) windows with wood frame in kind, reconfigure interior walls and stair, replace (e) roof joists with tji's reroof, and windows at west elevation, add private roof deck, add skylights, remodel bathrooms and kitchen, comply with complaint no 200994000Details
replace all (e) windows with wood frame in kind, reconfigure interior walls and stair, replace (e) roof joists with tji's reroof, and windows at west elevation, add private roof deck, add skylights, remodel bathrooms and kitchen, comply with complaint no 200994000 | $340,000 |
| Nov 23, 2011 | Never finaled issued Nov 2011, no final | 1235 07th Av | repair the stairway (garage to basement) to fix dryrot (interior). less than 50% total. add 2"x4" studs at the exterior wall in the basement. approx 10 linear feet.Details
repair the stairway (garage to basement) to fix dryrot (interior). less than 50% total. add 2"x4" studs at the exterior wall in the basement. approx 10 linear feet. | $1,500 |
| Aug 24, 2011 | Completed final sign-off Mar 2013 | 525 Greenwich St | remodel bathrooms&kitchen,infill light well at bsmnt lvl&right side against a blank wall. replace frt windows w/in-kind(wood,dbl-hung,pane),repalce roof joists.structural strengthening.reconfigure interior ,new garage & exii door(wood)remove front egress(metal stairs).add roof deck w/railing,skylit.Details
remodel bathrooms&kitchen,infill light well at bsmnt lvl&right side against a blank wall. replace frt windows w/in-kind(wood,dbl-hung,pane),repalce roof joists.structural strengthening.reconfigure interior ,new garage & exii door(wood)remove front egress(metal stairs).add roof deck w/railing,skylit. | $200,000 |
| Aug 18, 2011 | Expired or cancelled expired Nov 2019 | 1281 Greenwich St | extend greenwich street to a driveway to access subject property by vehicle via major sidewalk encroachment. modify 9e) sidewalk / stairs, provide lighting at stairs, repair stairs. add retaining wall to improve landscaping. new garage on seperate permit.Details
extend greenwich street to a driveway to access subject property by vehicle via major sidewalk encroachment. modify 9e) sidewalk / stairs, provide lighting at stairs, repair stairs. add retaining wall to improve landscaping. new garage on seperate permit. | $25,000 |
| Nov 18, 2009 | Completed final sign-off Mar 2010 | 262 15th Av | convert (e) inconditiones space at ground floor to a bathroom & storage. add door & closet to plyroom to became a bedroom. demo slabe tile @ (e) patio. put new wood deck, (e) good frame to remain.rebuild exterior stair with fir wall.Details
convert (e) inconditiones space at ground floor to a bathroom & storage. add door & closet to plyroom to became a bedroom. demo slabe tile @ (e) patio. put new wood deck, (e) good frame to remain.rebuild exterior stair with fir wall. | $30,000 |
| Jan 28, 2009 | Completed final sign-off Aug 2009 | 2900 Pierce St | revision to appl #200807237435, complaint #200886231: eliminate interior stairway from unit #5 (3rd flr) to loft;relocate (e) 1/2 bath at loft; replace steel beam on unit #5 to a larger beam to eliminate a post;replace all roof joists & reroof;replace window of loft w/french doo;add eave, skylightsDetails
revision to appl #200807237435, complaint #200886231: eliminate interior stairway from unit #5 (3rd flr) to loft;relocate (e) 1/2 bath at loft; replace steel beam on unit #5 to a larger beam to eliminate a post;replace all roof joists & reroof;replace window of loft w/french doo;add eave, skylights | $20,000 |
| Dec 31, 2008 | Never finaled issued Dec 2013, no final | 30 Edith St | remodel (e) bldg and add one story including add new stairs & elevator connecting 1st to 3rd floor. provide lightwell at 3rd floor to match (e) lightwell at adjacent bldg. new roof deck & deck at 3rd floor.Details
remodel (e) bldg and add one story including add new stairs & elevator connecting 1st to 3rd floor. provide lightwell at 3rd floor to match (e) lightwell at adjacent bldg. new roof deck & deck at 3rd floor. | $240,000 |
| Oct 3, 2008 | Completed final sign-off Mar 2009 | 844 Bay St | ref. appl#200410076269 r3-5 sh-5, interior improvement-no bearing wall. add wine cellar on 1st flr, re-tile bathrooms (3 1/2 bath), remove stairway in master bedroom, add closet in master bed/bathDetails
ref. appl#200410076269 r3-5 sh-5, interior improvement-no bearing wall. add wine cellar on 1st flr, re-tile bathrooms (3 1/2 bath), remove stairway in master bedroom, add closet in master bed/bath | $5,000 |
| Jul 23, 2008 | Completed final sign-off Aug 2009 | 2900 Pierce St | kitchen and bathroom remodel on all 6 units. add 1 bathroom per unit, relocate laundry rooms, upgrade (e) stair enclosure and bathroom in kind. replacement of all windows.Details
kitchen and bathroom remodel on all 6 units. add 1 bathroom per unit, relocate laundry rooms, upgrade (e) stair enclosure and bathroom in kind. replacement of all windows. | $210,000 |
| Dec 19, 2007 | Completed final sign-off Nov 2008 | 450 Vallejo St | #450a- convert existing storage on the ground floor to living space. this will add 1 bedroom & 1 bath to be connected to unit 450a with mew interior stairs. remodel existing bath and kitchen, replace fixtures and cabinets on #450a,Details
#450a- convert existing storage on the ground floor to living space. this will add 1 bedroom & 1 bath to be connected to unit 450a with mew interior stairs. remodel existing bath and kitchen, replace fixtures and cabinets on #450a, | $30,000 |