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478 31St Ave

Central Richmond, SF 94121 1462026 2 units · 2 fl · 1985

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 Richmond
At or below average
avg 0.5
0
FewerMore

This building has 0 novs (7y), at or below the Central Richmond average of 0.5.

Rent & eviction protection

Is 478 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 1985
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RH2
Not rent-controlled. Buildings constructed after 1978 are generally exempt from SF rent increase limits under the Costa-Hawkins Act.

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

Building characteristics
Units2
Floors2
Year built1985
Total area3,711 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1462026
Ownership

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

Owner name
Quach/Chiem Family Trust
Mailing address
Quach Cui Ky & Chiem Nghiem 480 31St Ave San Francisco CA 94121
Last sale
110502

Landlord portfolio

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

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Augrented Insights
Initial analysis

The Quach/Chiem Family Trust owns this two-unit, two-story multi-family residential building, located at 478 31st Avenue in San Francisco's Central Richmond neighborhood. Built in 1985 following the completion of demolition permits in August 1984, the property has undergone several maintenance and improvement projects over the years. Most notably, in March 2019, the building received an upgrade to its front facade with the installation of four new fiberglass windows, replacing original windows on both the second and third levels at a cost of $3,500. This window replacement project is the most recent significant building improvement on record.

The property has experienced minimal issues requiring municipal intervention, with the most recent incident occurring in August 2024 involving an unverified illegal parking complaint. A verified parking violation occurred in June 2022 when a motorcycle was parked on the sidewalk, resulting in a citation. Two public works-related incidents were reported in 2019 and 2021, including a general cleaning request and an issue with loose garbage, both of which were resolved, though one was administratively closed. A street space permit was also issued for the property in April 2019, though the specific purpose and cost were minimal at $1.00.

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

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Risk rating

How 478 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
81th percentile

Out of 2250 buildings in this neighborhood, 428 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
89%
No DBI
violation
11%
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.

Construction spend, owner's portfolio

Estimated permit value across all of this owner's buildings.

Estimated permit spend (past 7 years)

Dollar value of permits pulled at this address — large recent spend can signal deferred-maintenance catch-up.

Property class: multi-family flat

2–4 unit flats (class F) are a common SF building type with their own maintenance and complaint patterns.

12-Month severity forecast
No violation 83.6%
Moderate concern 11.1%
Severe concern 5.3%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

478 31St Ave apartment reviews

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The story over time

478 31St Ave event timeline

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

No dated public records on file yet.
Every record we have

Full data for 478 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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