4323 20TH ST
Castro/Upper Market · San Francisco, CA · Parcel 2751028 · Last violation Mar 4, 2026 · Last complaint Nov 6, 2025
NeighborhoodCastro/Upper Market
More violations than 96% of nearby buildings
More violations than 96% of buildings and more complaints than 98% of buildings in Castro/Upper Market.
Size-normalized against residential buildings in the neighborhood.
Activity TrendsLast 5 years
More activity recently than in past years
Last 2 yrs: 16 violations · 13 complaints
Severityⓘopen violations
All DBI violations have been resolved
Notices of Violation issued by the Department of Building Inspection, by current status.
Open fire-safety violations0
Open lead violations0
311 Housing Complaints
Total complaints since 2025
13
7 per year avg.↑ Rising — no prior history
Reported issues
13
Heatⓘ0
Leadⓘ1
Pestsⓘ0
Dept. of Building Inspection Violations
Total violations since 2000
45
2 per year avg.↑ Up 167% in the last 2 years (16 vs 6 prior 2 yrs)
Open violations
0
Fire safetyⓘ0
Leadⓘ0