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1327 31St Ave

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

This building has a higher-than-average number of open problems nearby. Few open issues; problems get fixed quickly. A reasonable bet for a smooth tenancy.

NOVs (7y) vs. neighborhood
Compared to a typical building in Central Sunset
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.

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).

Owner name
Aaron & Frances Chong Trust
Mailing address
Aaron B & Frances B Chong, 2109 Fox Glen Dr Fairfield CA 94534
Last sale
060799

Landlord portfolio

Other SF properties this owner holds, with risk grades 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

Grade A–B — Low risk

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

Grade C — Moderate risk

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

Grade D–F — High risk

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

Neighborhood percentile
33th percentile

Out of 814 buildings in this neighborhood, 545 are predicted to be safer.

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 severity forecast
No violation 33.3%
Moderate concern 18.0%
Severe concern 48.8%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

1327 31St Ave apartment reviews

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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.

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

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