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426-428 27Th Ave

Central Richmond, SF 94121 1458031 2 units · 2 fl · 1987

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 426-428 27Th 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 1987
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 built1987
Total area3,874 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1458031
Ownership

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

Owner name
Yeh-Seet 2001 Trust
Mailing address
Simon M Yeh & Elizabeth C S 1702 Oro Valley Cir Walnut Creek CA 94596
Last sale
031398

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.

426 27th Ave, San Francisco, CA 94121
428 27th Ave, San Francisco, CA 94121
Augrented Insights
Initial analysis

The two-unit multi-family residential building at 426-428 27th Avenue, owned by Yeh-seet 2001 Trust, was constructed in 1987 and has undergone several significant improvements over its lifetime. Most recently, in 2017, the building received new front windows with the installation of 12 Milgard Ultra fiberglass windows, representing a $19,140 investment in building maintenance. Notable historical improvements include the installation of a fire protection sprinkler system in 1986, code compliance work in 1988, and a completed window-to-door conversion project in 1996. In May 2017, the building experienced two complaints regarding unauthorized entryways that allegedly impeded access to other apartments on the top floor, which were referred to the Building Inspection Division, along with a related fire complaint, though these issues do not appear to have remained active.

The property has generated multiple 311 calls over the years, with the most recent incidents occurring between 2020 and 2023, primarily involving street cleaning and parking enforcement issues. There was a significant sewer-related incident reported in December 2010 involving a 4-inch vent sewage backup, and several human/animal waste cleanup requests recorded between 2010 and 2023. A cluster of parking violation calls was documented in August 2022 concerning a blue Ford Mustang, though these are street-related issues rather than building concerns. The building's permit history shows regular maintenance and upgrading of the property, with no recorded code violations or serious safety incidents in recent years.

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

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Risk rating

How 426-428 27Th 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.

Building size

Total floor area — a proxy for building scale and the number of systems (plumbing, electrical, HVAC) that can fail.

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.

12-Month severity forecast
No violation 81.6%
Moderate concern 10.8%
Severe concern 7.6%
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

426-428 27Th 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 426-428 27Th 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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