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307-309 28Th Ave

Central Richmond, SF 94121 1405002 2 units · 2 fl · 1922

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 307-309 28Th 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 1922
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RH2
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
Units2
Floors2
Year built1922
Total area1,996 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1405002
Ownership

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

Owner name
Chiu Trust
Mailing address
David K Chiu & Helen Shui Y 1678 30Th Ave San Francisco CA 94122
Last sale
000000

Landlord portfolio

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

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Multiple entrances & addresses

Included addresses

All street addresses sharing this blocklot that are covered by this report.

307 28th Ave, San Francisco, CA 94121
309 28th Ave, San Francisco, CA 94121
Augrented Insights
Initial analysis

The two-unit multi-family residential building at 307-309 28th Avenue in the Central Richmond neighborhood, currently owned by Chiu Trust, was constructed in 1922 as a two-story flats and duplex structure. The building's maintenance history shows three roofing projects: one completed in 2005 at a cost of $5,280, another permitted street space modification in 2011, and an earlier roof work from 1989, though records indicate these permits eventually expired without confirmation of completion.

The property and its immediate surroundings have experienced a series of maintenance and public order issues over the past several years, with the most recent incidents occurring in 2024 involving loose garbage and debris, and in 2023 with a Christmas tree removal. The area has seen recurring issues with street cleanliness, including abandoned vehicles (towed in May 2022 due to expired registration), hazardous materials (an old oil stain in May 2022), and various instances of garbage accumulation requiring municipal intervention. Notably, there was a significant infrastructure concern in December 2013 when 200 square feet of damaged/uneven sidewalk was documented. The most recent public services calls suggest ongoing challenges with waste management and street maintenance, though all reported issues have been officially resolved according to city records.

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

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Risk rating

How 307-309 28Th 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
64th percentile

Out of 2250 buildings in this neighborhood, 810 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
86%
No DBI
violation
14%
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.

Building permits, owner's portfolio

Permits pulled across all of this owner's buildings over 7 years.

DBI complaint rate, owner's portfolio

Per-building complaint rate across the owner's portfolio.

12-Month severity forecast
No violation 82.3%
Moderate concern 13.0%
Severe concern 4.7%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

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The story over time

307-309 28Th Ave event timeline

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

2026
311 Request Jun 05
Garbage and debris
other loose garbage debris yard waste
311 RequestApr 02
Not offensive

See all 5 events

Full history back to 2025 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 307-309 28Th 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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