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491 31ST AVE

Outer Richmond · San Francisco, CA · Parcel 1463053 · Last violation Apr 27, 2026 · Last complaint Aug 20, 2026

NeighborhoodOuter Richmond
More violations than 82% of nearby buildings
More violations than 82% of buildings and more complaints than 88% of buildings in Outer Richmond. Size-normalized against residential buildings in the neighborhood.
ViolationsComplaints
Activity TrendsLast 5 years
A steady level of activity over time
Last 2 yrs: 2 violations · 15 complaints
'21'26ViolationsComplaints
Severityⓘopen violations
2 open DBI violations
Active Notices of Violation issued by the Department of Building Inspection.
Severe1
Serious1
Minor0

What to watch forⓘ

  1. Tenants here have reported no heat or no hot water.
    details ▸

    California law requires heating facilities in good working order, and plumbing facilities in good working order including hot and cold running water. A rental unit that substantially lacks either may be legally uninhabitable, which is the standard the implied warranty of habitability sets for every residential tenancy in the state.

    Ask how heat and hot water are supplied and who pays for them. If either fails once you live here, put the request to the landlord in writing and keep a copy.

    • California Tenant Guide
    • San Francisco Housing Code §701
  2. Fire safety problems have been reported here.
    Worth checkingⓘ
    Walk the exit route from the unit to the street and check the stairs and hallways are clear of stored items, and that fire doors close properly.
    details ▸

    California law requires safe fire or emergency exits leading to a street or hallway, and requires stairs, hallways and exits to be kept litter free. Storage areas, garages and basements must be kept free of combustible materials. San Francisco's Housing Code separately treats inadequate exits and inadequate fire protection equipment as conditions that make a building substandard, which is the finding behind a notice of violation.

311 Housing Complaints
Total complaints since 2017
38
4 per year avg.→ Stable in the last 2 years
Complaint severity
Last 5 years
20
Severeⓘ6
Seriousⓘ7
Minorⓘ7
Dept. of Building Inspection Violations
Total violations since 2015
15
1 per year avg.↓ Down 78% in the last 2 years (2 vs 9 prior 2 yrs)
Open violations
2
Severeⓘ1
Seriousⓘ1
Minorⓘ0

Top violation categories

5 yrsAll time
Heating equipmentⓘ5 violations
Heat / hot waterⓘ2 violations
Plumbingⓘ2 violations
Walls, ceilings & cabinetsⓘ1 violations
Exterior & windowsⓘ1 violations
No specific condition stated4 violations
See violation log below.

Top complaint types

5 yrsAll time
Illegal Construction No Permit Exceeds Permit Scope10 complaints
Infestation Rodent Insect4 complaints
Plumbing Broken Leaking4 complaints
Hot Water Lack Of Hot Water4 complaints
General Maintenance Not In List Above4 complaints
Fire Alarm System4 complaints
Doors Windows Broken Defective2 complaints
Mail Service Delivery Problem2 complaints
Heat Lack Of Heat1 complaints
Clutter Hoarder Unit Interior Storage1 complaints
Garbage Receptacles1 complaints
Bathroom1 complaints
Hide violations (15) ↑See complaints (38) →

Violation log

15 DBI violations

AllOpenClosed
StatusFiledCategoryItemNOV Item Description
OpenApr 27, 2026Plumbing—A complaint investigation revealed that demolition occured in unit 407 without the benefit of a building permit. Unit was removed of all fixtures including: cabinets, stove, venthood, sink, bathroom sink, shower, and toilet. Sheetrock was removed throughout the unit and only the studs remained.
See something wrong? File a complaint with SF 311
  • California Tenant Guide
  • San Francisco Housing Code §1001(m), (n)
  • Tenants here have reported pests.
    Worth checkingⓘ
    Look along baseboards and inside low cabinets for droppings, greasy rub marks or tracks, and check whether the bins outside overflow and whether gaps around exterior doors are sealed.
    details ▸

    California law requires buildings and grounds to be kept clean and sanitary and free from debris, filth, rubbish, garbage, rodents and vermin. San Francisco requires property owners to keep their property free of vermin, and requires an owner or manager to respond to a tenant's bed bug complaint by hiring a licensed pest control operator.

    • California Tenant Guide
    • SF.gov, Keeping your building free of vermin
    • OpenJan 6, 2026Plumbing—An emergency response revealed a minor fire occurred in unit 407. Smoke and water damage has occurred in the kitchen area. Smoke damage within the unit. and soot on the walls and cabinets. One displaced person with the red cross. Code/Section: SFBC 102.A Monthly monitoring fee applies Code/Section: SFBC 110A, Table 1A-k
    not activeJan 18, 2024building sectionthis notice includes violations for the areas noted.this department investigated the complaint at the subject property and observed violation(s) of the san francisco housing code which are delineated within the notice of violation issued. pertinent observations are as follows.
    not activeJan 18, 2024building sectionprovide heat to each habitable room capable of maintaining a minimum room temperature of 70 degrees f. (20 degrees c.). (701c hc)boiler system down. repair boiler system.
    not activeJan 18, 2024building sectionprovide apt. house water heated to min. 105 degrees f. (41 degrees c.) and max. of 120 degrees f. at hot water taps. (505d(3))boiler system down. repair boiler system.
    not activeJan 18, 2024building sectioninspector's commentsit is the property owner's responsibility to be present or direct his/her representative to attend, the reinspection as scheduled on this notice of violation for the purpose of providing entry to the inspector of those areas cited within this notice. if the property owner cannot attend the scheduled reinspection (as specified on this notice) it is his/her responsibility to secure a different inspection date and time with the inspector. your cooperation is appreciated.
    not activeDec 29, 2023building sectionthis notice includes violations for the areas noted.this department investigated the complaint at unit #312 of the subject property and observed violation(s) of the san francisco housing code which are delineated within the notice of violation issued. pertinent observations are as follows.
    not activeDec 29, 2023building sectionrepair damaged walls & ceilings (1001b,h,o hc)at time of inspection, multiple locations at walls and ceilings inside unit showed evidence of water intrusion from above. patch and repaint all affected areas as needed.
    not activeDec 29, 2023building sectionrepair malfunctioning light (504, 1001 hc)at time of inspection, interior entry light adjacent to front door was not operable. repair as needed.
    not activeDec 29, 2023building sectioninspector's commentsit is the property owner's responsibility to be present or direct his/her representative to attend, the reinspection as scheduled on this notice of violation for the purpose of providing entry to the inspector of those areas cited within this notice. if the property owner cannot attend the scheduled reinspection (as specified on this notice) it is his/her responsibility to secure a different inspection date and time with the inspector. your cooperation is appreciated.
    not activeJun 1, 2023Heating equipment—No permit to operate the boiler. serial no HK15711151, CMC 1022. Monthly monitoring fee applies. Code Sec: SFBC 110A, Table 1A-K
    not activeApr 27, 2015Heating equipment—No current permit to operate the boiler. serial no HK15711153, CMC 1022
    not activeApr 27, 2015Heating equipment—No current permit to operate the boiler. serial no HK15711153, CMC 1022 Monthly violation monitoring fee: $52
    not activeApr 27, 2015Heating equipment—No current permit to operate the boiler. serial no HK15711151, CMC 1022
    not activeApr 27, 2015Heating equipment—No current permit to operate the boiler. serial no HK15711151, CMC 1022 Monthly violation monitoring fee: $52
    OpenApr 27, 2026
    Plumbing
    A complaint investigation revealed that demolition occured in unit 407 without the benefit of a building permit. Unit was removed of all fixtures including: cabinets, stove, venthood, sink, bathroom sink, shower, and toilet. Sheetrock was removed throughout the unit and only the studs remained.
    OpenJan 6, 2026
    Plumbing
    An emergency response revealed a minor fire occurred in unit 407. Smoke and water damage has occurred in the kitchen area. Smoke damage within the unit. and soot on the walls and cabinets. One displaced person with the red cross. Code/Section: SFBC 102.A Monthly monitoring fee applies Code/Section: SFBC 110A, Table 1A-k
    not activeJan 18, 2024
    building section · this notice includes violations for the areas noted.
    this department investigated the complaint at the subject property and observed violation(s) of the san francisco housing code which are delineated within the notice of violation issued. pertinent observations are as follows.
    not activeJan 18, 2024
    building section · provide heat to each habitable room capable of maintaining a minimum room temperature of 70 degrees f. (20 degrees c.). (701c hc)
    boiler system down. repair boiler system.
    not activeJan 18, 2024
    building section · provide apt. house water heated to min. 105 degrees f. (41 degrees c.) and max. of 120 degrees f. at hot water taps. (505d(3))
    boiler system down. repair boiler system.
    not activeJan 18, 2024
    building section · inspector's comments
    it is the property owner's responsibility to be present or direct his/her representative to attend, the reinspection as scheduled on this notice of violation for the purpose of providing entry to the inspector of those areas cited within this notice. if the property owner cannot attend the scheduled reinspection (as specified on this notice) it is his/her responsibility to secure a different inspection date and time with the inspector. your cooperation is appreciated.
    not activeDec 29, 2023
    building section · this notice includes violations for the areas noted.
    this department investigated the complaint at unit #312 of the subject property and observed violation(s) of the san francisco housing code which are delineated within the notice of violation issued. pertinent observations are as follows.
    not activeDec 29, 2023
    building section · repair damaged walls & ceilings (1001b,h,o hc)
    at time of inspection, multiple locations at walls and ceilings inside unit showed evidence of water intrusion from above. patch and repaint all affected areas as needed.
    not activeDec 29, 2023
    building section · repair malfunctioning light (504, 1001 hc)
    at time of inspection, interior entry light adjacent to front door was not operable. repair as needed.
    not activeDec 29, 2023
    building section · inspector's comments
    it is the property owner's responsibility to be present or direct his/her representative to attend, the reinspection as scheduled on this notice of violation for the purpose of providing entry to the inspector of those areas cited within this notice. if the property owner cannot attend the scheduled reinspection (as specified on this notice) it is his/her responsibility to secure a different inspection date and time with the inspector. your cooperation is appreciated.
    not activeJun 1, 2023
    Heating equipment
    No permit to operate the boiler. serial no HK15711151, CMC 1022. Monthly monitoring fee applies. Code Sec: SFBC 110A, Table 1A-K
    not activeApr 27, 2015
    Heating equipment
    No current permit to operate the boiler. serial no HK15711153, CMC 1022
    not activeApr 27, 2015
    Heating equipment
    No current permit to operate the boiler. serial no HK15711153, CMC 1022 Monthly violation monitoring fee: $52
    not activeApr 27, 2015
    Heating equipment
    No current permit to operate the boiler. serial no HK15711151, CMC 1022
    not activeApr 27, 2015
    Heating equipment
    No current permit to operate the boiler. serial no HK15711151, CMC 1022 Monthly violation monitoring fee: $52