Free SF apartment background check

1327 31St Ave

Central Sunset, SF 94122 1786003 4 units · 2 fl · 1949

This building has a substantial enforcement record over the last seven years, but recent activity points to a low risk of further maintenance problems in the next 12 months. Read the records below before you sign. Ask which issues were resolved, get repair commitments in writing, and inspect the unit yourself.

NOVs (7y) vs. neighborhood
Records already on file, against a typical building in Central Sunset — not a forecast
Above average
avg 0.7
10
FewerMore

This building has 10 novs (7y), above the Central Sunset average of 0.7.

Rent & eviction protection

Is 1327 31St Ave rent-controlled?

San Francisco's Rent Ordinance caps rent increases and provides eviction protection for most residential units built before 1979 with 2+ units. Here's how this building scores.

Built before 1979
Built 1949
2 or more units
4 units
Property type
Multi-Family Residential
Zoning
RH1
Likely rent-controlled. Building age and unit count suggest this property falls under San Francisco's Rent Ordinance.

Based on SF Assessor records. Not legal advice — confirm with the SF Rent Board.

Statewide backstop · AB 1482

California Tenant Protection Act of 2019

Even when a building isn't covered by local rent stabilization, the statewide Tenant Protection Act (AB 1482) may still apply. It caps annual rent increases and requires the landlord to state a legal reason to end most tenancies.

15+ years since occupancy
Built 1949
Annual rent increase cap
5% + CPI, max 10%
Just-cause eviction
After 12 months
Local rent control likely takes priority. This building appears to fall under the local ordinance above, which is stronger than AB 1482. Where a local just-cause ordinance applies, its rules govern instead of the state cap.

AB 1482 does not apply to single-family homes and condos unless owned by a corporation, REIT, or an LLC with a corporate member; to owner-occupied duplexes; or to deed-restricted affordable housing. The Act is in effect until January 1, 2030. Not legal advice — see the California landlord–tenant guide.

Building characteristics
Units4
Floors2
Year built1949
Total area2,850 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1786003
Ownership

Registered owner per SF Assessor-Recorder (secured roll).

Mailing address
Aaron B & Frances B Chong, 2109 Fox Glen Dr Fairfield CA 94534
Last sale

Landlord portfolio

Other SF properties this owner holds, with a risk rating for each.

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Augrented Insights
Initial analysis

The property at 1327 31st Avenue in the Central Sunset neighborhood is a two-story, four-unit multi-family residential building constructed in 1949, currently owned by the Aaron & Frances Chong Trust. The building has experienced several notable safety-related incidents over the past two decades. Most recently, in 2015, there were concerns about unsafe lead practices and improper exterior paint removal methods that resulted in contamination of the property. In 2011, fire safety issues were documented regarding the maintenance of fire escape drop ladders, continuing a pattern from similar violations recorded in 2001. The building underwent routine safety inspections in 2001 and 2011, and there were also maintenance issues reported regarding bedroom windows in 2010.

The property has recently experienced multiple infrastructure concerns, particularly regarding the sidewalk, which has generated several complaints in 2023 about collapse defects. A parking violation was recorded in May 2023, while earlier in 2021 there were reports of allegedly abandoned vehicles on the street, though these complaints were determined to have no merit. A weed and grass complaint was filed and resolved in late 2005. Throughout its history, the building has experienced recurring issues with fire safety equipment and maintenance, though most violations have been promptly addressed. The most recent significant building-related compliance matters were resolved or closed out, with no active violations currently on record.

AI-generated · may contain errors · check the source data tables below

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Risk rating

How 1327 31St Ave's risk score is calculated

We trained a model on 7 years of SF DBI inspection data — notice of violation filings, complaint history, and owner track records. It estimates the probability that DBI inspectors will issue a Notice of Violation at this address in the next 12 months. Lower % = safer.

What the score means for you

Lower risk — safer than most nearby

DBI rarely finds violations here. Strong maintenance history and a clean complaint record.

Typical — about average for the neighborhood

Some past violations or complaints on record. Worth asking the landlord about any open issues before signing.

Higher risk — riskier than most nearby

Elevated violation and complaint history. DBI has found issues here before and is statistically likely to again.

Neighborhood percentile
33rdpercentile

Out of 814 buildings in this neighborhood, 545 are predicted to be safer. The band is relative to this neighborhood, so a share of every neighborhood falls in each colour.

RiskiestSafest
Predicted 12-month outcome
81%
No DBI
violation
19%
DBI violation
likely
Model explanation

What's driving this score

The three data points that most influenced this building's risk rating — ranked by the weight the model placed on each one.

Number of units

The number of units affects how the model reads complaint and violation totals — more units means more potential sources.

Neighborhood location

Precise location is a proxy for neighborhood-level risk — some SF blocks have systematically higher DBI activity.

Neighborhood (ZIP code)

The ZIP code captures local housing market and enforcement patterns that affect all buildings in the area.

12-Month risk forecast
Low failure risk 19%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

1327 31St Ave apartment reviews

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On the map

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The story over time

1327 31St Ave event timeline

Violations, complaints, fire incidents, permits, and buyouts — most recent records in order.

2026
Building Violation (NOV) Feb 11
Building violation
1327 31st av, common areas
Building Violation (NOV)Feb 11
Building violation

See all 10 events

Full history back to 2023 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 1327 31St Ave apartments

13 SF public datasets for this parcel — permits, violations, complaints, fire records, 311 calls, planning records, and buyouts.

Side by side

How 1327 31St Ave compares to the neighborhood

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Cancel anytime · Data sourced from SF Open Data, DBI, SFFD, SF Rent Board & Planning

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