4106 20th Street
Castro (Eureka Valley) · San Francisco, CA 94114
Permit history
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May 2026
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.
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Jan 2026
Reroofing: remove and replace roofing material / existing roofing material (in-kind).
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Feb 2015
Replace existing 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.
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Oct 2005
Replace concrete front stairs. new foundation (section). remove/replace rotten wood. replace basement window.
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Jul 2005
Install 2 18"x18" x24" depth underpinnings to west side of front stair where current fndtn is sink.
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Jan 2004
Remove brick chimney from roof to 1st floor level. patch hole in roof. chimney not visible from the.
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Apr 1997
Reroofing.
1 nominal $1 street-space permit is omitted.
Not yet documented: the architect and builder and the early residents. Know any of it? Tell us — just describe it in plain words.