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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
Heat / hot waterⓘ2 violations
Plumbingⓘ2 violations
Heating equipmentⓘ1 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
General Maintenance Not In List Above4 complaints
Hot Water Lack Of Hot Water4 complaints
Plumbing Broken Leaking3 complaints
Fire Alarm System2 complaints
Doors Windows Broken Defective2 complaints
Mail Service Delivery Problem2 complaints
Garbage Receptacles1 complaints
Infestation Rodent Insect1 complaints
Bathroom1 complaints
See violations (15) →Hide complaints (38) ↑

Complaint log

38 311 complaints

StatusFiledType
OpenAug 20, 2026Fire Alarm System
ClosedAug 13, 2026Illegal Construction No Permit Exceeds Permit Scope
ClosedAug 11, 2026Illegal Construction No Permit Exceeds Permit Scope
Closed
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
  • Jul 8, 2026
    Illegal Construction No Permit Exceeds Permit Scope
    OpenJul 8, 2026Fire Alarm System
    ClosedJul 8, 2026Illegal Construction No Permit Exceeds Permit Scope
    ClosedJul 8, 2026Illegal Construction No Permit Exceeds Permit Scope
    ClosedApr 28, 2026Illegal Construction No Permit Exceeds Permit Scope
    ClosedApr 28, 2026Illegal Construction No Permit Exceeds Permit Scope
    ClosedApr 28, 2026Bathroom
    ClosedApr 28, 2026Illegal Construction No Permit Exceeds Permit Scope
    ClosedApr 24, 2026Illegal Construction No Permit Exceeds Permit Scope
    ClosedFeb 13, 2026Garbage Receptacles
    ClosedOct 15, 2025Plumbing Broken Leaking
    ClosedMay 28, 2025General Maintenance Not In List Above
    ClosedJul 4, 2024Mail Service Delivery Problem
    ClosedJun 25, 2024Plumbing Broken Leaking
    ClosedJun 13, 2024Mail Service Delivery Problem
    ClosedApr 15, 2024Doors Windows Broken Defective
    ClosedApr 5, 2024Plumbing Broken Leaking
    ClosedMar 12, 2024Doors Windows Broken Defective
    ClosedJan 27, 2024General Maintenance Not In List Above
    ClosedJan 24, 2024Hot Water Lack Of Hot Water
    ClosedJan 23, 2024General Maintenance Not In List Above
    ClosedJan 23, 2024General Maintenance Not In List Above
    ClosedJan 23, 2024Illegal Construction No Permit Exceeds Permit Scope
    ClosedJan 22, 2024Hot Water Lack Of Hot Water
    ClosedJan 19, 2024Hot Water Lack Of Hot Water
    ClosedJan 17, 2024Hot Water Lack Of Hot Water
    ClosedMar 3, 2023Infestation Rodent Insect
    ClosedFeb 19, 2021Plumbing Broken Leaking
    ClosedFeb 5, 2021Infestation Rodent Insect
    ClosedJan 10, 2021Infestation Rodent Insect
    ClosedOct 16, 2020Infestation Rodent Insect
    ClosedOct 8, 2020Clutter Hoarder Unit Interior Storage
    ClosedSep 16, 2018Fire Alarm System
    ClosedJul 23, 2018Fire Alarm System
    ClosedJan 29, 2017Heat Lack Of Heat
    OpenAug 20, 2026
    Fire Alarm System
    ClosedAug 13, 2026
    Illegal Construction No Permit Exceeds Permit Scope
    ClosedAug 11, 2026
    Illegal Construction No Permit Exceeds Permit Scope
    ClosedJul 8, 2026
    Illegal Construction No Permit Exceeds Permit Scope
    OpenJul 8, 2026
    Fire Alarm System
    ClosedJul 8, 2026
    Illegal Construction No Permit Exceeds Permit Scope
    ClosedJul 8, 2026
    Illegal Construction No Permit Exceeds Permit Scope
    ClosedApr 28, 2026
    Illegal Construction No Permit Exceeds Permit Scope
    ClosedApr 28, 2026
    Illegal Construction No Permit Exceeds Permit Scope
    ClosedApr 28, 2026
    Bathroom
    ClosedApr 28, 2026
    Illegal Construction No Permit Exceeds Permit Scope
    ClosedApr 24, 2026
    Illegal Construction No Permit Exceeds Permit Scope
    ClosedFeb 13, 2026
    Garbage Receptacles
    ClosedOct 15, 2025
    Plumbing Broken Leaking
    ClosedMay 28, 2025
    General Maintenance Not In List Above
    ClosedJul 4, 2024
    Mail Service Delivery Problem
    ClosedJun 25, 2024
    Plumbing Broken Leaking
    ClosedJun 13, 2024
    Mail Service Delivery Problem
    ClosedApr 15, 2024
    Doors Windows Broken Defective
    ClosedApr 5, 2024
    Plumbing Broken Leaking
    ClosedMar 12, 2024
    Doors Windows Broken Defective
    ClosedJan 27, 2024
    General Maintenance Not In List Above
    ClosedJan 24, 2024
    Hot Water Lack Of Hot Water
    ClosedJan 23, 2024
    General Maintenance Not In List Above
    ClosedJan 23, 2024
    General Maintenance Not In List Above
    ClosedJan 23, 2024
    Illegal Construction No Permit Exceeds Permit Scope
    ClosedJan 22, 2024
    Hot Water Lack Of Hot Water
    ClosedJan 19, 2024
    Hot Water Lack Of Hot Water
    ClosedJan 17, 2024
    Hot Water Lack Of Hot Water
    ClosedMar 3, 2023
    Infestation Rodent Insect
    ClosedFeb 19, 2021
    Plumbing Broken Leaking
    ClosedFeb 5, 2021
    Infestation Rodent Insect
    ClosedJan 10, 2021
    Infestation Rodent Insect
    ClosedOct 16, 2020
    Infestation Rodent Insect
    ClosedOct 8, 2020
    Clutter Hoarder Unit Interior Storage
    ClosedSep 16, 2018
    Fire Alarm System
    ClosedJul 23, 2018
    Fire Alarm System
    ClosedJan 29, 2017
    Heat Lack Of Heat