Block 3602, lot 016

4106 20th St

City’s use: Single Family Residential
Built: 1905
Stories: 1
Units: 1
Rooms: 1 bathroom
Building: 1,050 sq ft
Lot: 2,448 sq ft
Zoning: RH1
Construction type: D

From the assessor's latest secured roll, which can lag recent work. Lot plans, zoning and planning history on the city’s Property Information Map

Permits filed here

7 permits filed for this property since 2000.

CompletedIn progressNever finaledExpired or cancelled

Filed	Outcome	Address	Contractor	Work described on the permit	Declared cost
May 19, 2026	In progress issued Jul 2026	4106 20th St	Solar Tech Energy Systems Inc	solar permit: installing 17 solar pv modules, 440 watts per module, total no. of rating 7.48 kw. mounted: roof, ballasted: n, including 2 energy storage unit, with 13.5 kwh each in capacity, ess units will not be closer than 3 feet \| installation of roof-mounted utili Details Permit S20260514610 Status issued Filed May 19, 2026 Permit issued Jul 6, 2026 Declared cost $46,561 Address 4106 20th St solar permit: installing 17 solar pv modules, 440 watts per module, total no. of rating 7.48 kw. mounted: roof, ballasted: n, including 2 energy storage unit, with 13.5 kwh each in capacity, ess units will not be closer than 3 feet \| installation of roof-mounted utili Open the permit page	$46,561
Jan 28, 2026	Completed final sign-off Feb 2026	4106 20th St	Rooflow Inc	re-roofing: remove and replace roofing material / existing roofing material (in-kind) Details Permit 202601284772 Status complete Filed Jan 28, 2026 Permit issued Jan 28, 2026 Final sign-off Feb 6, 2026 Declared cost $14,000 Address 4106 20th St re-roofing: remove and replace roofing material / existing roofing material (in-kind) Open the permit page	$14,000
Feb 13, 2015	Completed final sign-off Apr 2016	4106 20th St	Pat Crowley Construction	replace (e) skylight with new velux 2'x4'. remove 10 sq. ft. of rotten siding on back wall. replace rotten casings around base door. install new 2 flashing over back window & door. Details Permit 201502138301 Status complete Filed Feb 13, 2015 Permit issued Feb 13, 2015 Final sign-off Apr 27, 2016 Declared cost $3,000 Address 4106 20th St replace (e) skylight with new velux 2'x4'. remove 10 sq. ft. of rotten siding on back wall. replace rotten casings around base door. install new 2 flashing over back window & door. Open the permit page	$3,000
Dec 12, 2005	Never finaled issued Dec 2005, no final	4106 20th St		street space permit only. Details Permit M35654 Status issued Filed Dec 12, 2005 Permit issued Dec 12, 2005 Address 4106 20th St street space permit only. Open the permit page
Oct 7, 2005	Completed final sign-off Feb 2006	4106 20th St	Koefoed Const Co	replace concrete front stairs. new foundation (section). remove/replace rotten wood. replace basement window. Details Permit 200510075057 Status complete Filed Oct 7, 2005 Permit issued Oct 7, 2005 Final sign-off Feb 21, 2006 Declared cost $10,000 Address 4106 20th St replace concrete front stairs. new foundation (section). remove/replace rotten wood. replace basement window. Open the permit page	$10,000
Jul 14, 2005	Never finaled issued Jul 2005, no final	4106 20th St	Koefoed Const Co	install 2 18"x18" x24" depth underpinnings to west side of front stair where current fndtn is sink Details Permit 200507147551 Status issued Filed Jul 14, 2005 Permit issued Jul 14, 2005 Declared cost $2,500 Address 4106 20th St install 2 18"x18" x24" depth underpinnings to west side of front stair where current fndtn is sink Open the permit page	$2,500
Jan 8, 2004	Completed final sign-off Mar 2004	4106 20th St	Koefoed Const Co	remove brick chimney from roof to 1st floor level. patch hole in roof. chimney not visible from the Details Permit 200401083567 Status complete Filed Jan 8, 2004 Permit issued Jan 8, 2004 Final sign-off Mar 1, 2004 Declared cost $1,200 Address 4106 20th St remove brick chimney from roof to 1st floor level. patch hole in roof. chimney not visible from the Open the permit page	$1,200

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