Duffin Construction

Contractor license: 760636; State license record
Based in: San Francisco
On San Francisco permits: Feb 2001 to Sep 2024
Last 24 months: 0 permits filed

98 permits since 2000: 72 completed, 17 never finaled, 9 expired or cancelled.

Of the 17 never-finaled permits, 2 are 3 to 5 years old, 10 are 5 to 10 years old, 5 are over 10 years old.

CompletedIn progressNever finaledExpired or cancelled

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

Median days to final inspection, citywideMedian days to permit issued, citywideThis contractor’s finished permits

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

All Roof deck 4 Deck 3 Stairs 8 Kitchen remodel 17 Bathroom remodel 20

8 stairs permits: 5 completed, 3 never finaled. Typically 6 days from filing to permit and 253 days from permit to final inspection.

Filed	Outcome	Address	Work described on the permit	Declared cost
Sep 14, 2021	Never finaled issued Aug 2022, no final	639 34th Av	3rd story addition w/ roof deck. remodel entire (e) 2nd-story home. kitchen, baths, living spaces, stairs, hvac, electrical, plumbing and facade improvements. Details Permit 202109148427 Status issued Filed Sep 14, 2021 Permit issued Aug 19, 2022 Declared cost $500,000 Address 639 34th Av 3rd story addition w/ roof deck. remodel entire (e) 2nd-story home. kitchen, baths, living spaces, stairs, hvac, electrical, plumbing and facade improvements. Open the permit page	$500,000
Sep 3, 2021	Never finaled issued Sep 2021, no final	88 Entrada Ct	demo of interior wall b/w kitchen and family room. add new stairs b/w kitchen and family room. create trash enclosure at extg garage doors. new concrete footings for opening b/w kitchen and family and trash enclosure. Details Permit 202109037750 Status issued Filed Sep 3, 2021 Permit issued Sep 3, 2021 Declared cost $50,000 Address 88 Entrada Ct demo of interior wall b/w kitchen and family room. add new stairs b/w kitchen and family room. create trash enclosure at extg garage doors. new concrete footings for opening b/w kitchen and family and trash enclosure. Open the permit page	$50,000
Mar 3, 2021	Completed final sign-off Jan 2022	887 28th Av	1/f: interior non-compliance stair replacement in kind. 2/f: raise floor partially under the (e) vanity countertop at the bathroom to improve head clearance for (e) non-compliance interior stairway. install new vanities, countertop and cabinets at bathroom. relocate outlets at bathroom. Details Permit 202103035748 Status complete Filed Mar 3, 2021 Permit issued May 4, 2021 Final sign-off Jan 12, 2022 Declared cost $20,000 Address 887 28th Av 1/f: interior non-compliance stair replacement in kind. 2/f: raise floor partially under the (e) vanity countertop at the bathroom to improve head clearance for (e) non-compliance interior stairway. install new vanities, countertop and cabinets at bathroom. relocate outlets at bathroom. Open the permit page	$20,000
Jan 16, 2018	Completed final sign-off Sep 2022	65 Almaden Ct	replace internal stairs, install 5 lew skylights, add 2 bedrooms, replace 1/2 bath with full bath at 1st fl enclose atrium, add 1 / 1/2 bath, remodel kitchen and bath Details Permit 201801168631 Status complete Filed Jan 16, 2018 Permit issued Jan 23, 2018 Final sign-off Sep 13, 2022 Declared cost $270,000 Address 65 Almaden Ct replace internal stairs, install 5 lew skylights, add 2 bedrooms, replace 1/2 bath with full bath at 1st fl enclose atrium, add 1 / 1/2 bath, remodel kitchen and bath Open the permit page	$270,000
Oct 6, 2017	Completed final sign-off May 2018	851 42nd Av	gr fl convert family rm to bedroom, new bedroom at front, move stairs, relocat bathroo, laundry, utility. convert part of kitchen to master bedroom, relocate new stairs to gr fl,kitchen remodel Details Permit 201710060658 Status complete Filed Oct 6, 2017 Permit issued Oct 11, 2017 Final sign-off May 2, 2018 Declared cost $220,000 Address 851 42nd Av gr fl convert family rm to bedroom, new bedroom at front, move stairs, relocat bathroo, laundry, utility. convert part of kitchen to master bedroom, relocate new stairs to gr fl,kitchen remodel Open the permit page	$220,000
Sep 11, 2017	Never finaled issued Sep 2017, no final	4430 24th St	replace 3 front vinyl windows w/ alum-clad wood dh; inkind replace sectional garage door; inkind repair front stairs; no other work Details Permit 201709117598 Status issued Filed Sep 11, 2017 Permit issued Sep 11, 2017 Declared cost $65,000 Address 4430 24th St replace 3 front vinyl windows w/ alum-clad wood dh; inkind replace sectional garage door; inkind repair front stairs; no other work Open the permit page	$65,000
Mar 5, 2015	Completed final sign-off Aug 2017	848 42nd Av	remodel bedrooms at 2nd floor. convert storage into bedroom, bathroom and study at 1st floor. reverse stair at lightwell. Details Permit 201503050015 Status complete Filed Mar 5, 2015 Permit issued Mar 9, 2015 Final sign-off Aug 21, 2017 Declared cost $50,000 Address 848 42nd Av remodel bedrooms at 2nd floor. convert storage into bedroom, bathroom and study at 1st floor. reverse stair at lightwell. Open the permit page	$50,000
May 28, 2013	Completed final sign-off May 2014	1509 Clement St	1)demo rear stairs. 2)demo portion of ground floor rear wall. 3)add new rear stair to 2nd floor. 4)add 42" parapet at deck. 5) mech and electrical on seperate permit. Details Permit 201305287959 Status complete Filed May 28, 2013 Permit issued Dec 30, 2013 Final sign-off May 14, 2014 Declared cost $25,000 Address 1509 Clement St 1)demo rear stairs. 2)demo portion of ground floor rear wall. 3)add new rear stair to 2nd floor. 4)add 42" parapet at deck. 5) mech and electrical on seperate permit. Open the permit page	$25,000