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735-737 20Th Ave

Central Richmond, SF 94121 1663006 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 735-737 20Th 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 area3,350 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot1663006
Ownership

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

Owner name
Yang Hung Lin & Cheng Yanki
Mailing address
737 20th Ave San Francisco CA 94121
Last sale
111919

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.

735 20th Ave, San Francisco, CA 94121
737 20th Ave, San Francisco, CA 94121
Augrented Insights
Initial analysis

The 735-737 20th Avenue property is a 2-unit, 2-story multi-family residential building located in the Central Richmond neighborhood, built in 1922 and currently owned by Yang Hung Lin & Cheng Yanki. The building has undergone significant renovations over the past decade, with substantial work occurring between 2016-2017. The improvements included comprehensive remodeling of both units' kitchens and bathrooms, with unit 737 receiving a new master bath, and unit 735 receiving bathroom and kitchen upgrades. Structural enhancements included garage beam and post modifications, including the replacement of wood posts with steel columns, and the installation of garage wall anchor bolts and plywood. Systems upgrades comprised of new electrical panels, lighting, plumbing fixtures, and HVAC improvements, including the relocation of a furnace and installation of a new wall-mounted water heater.

The property's history includes one significant code violation in 1999 regarding an illegal unit behind the garage with unauthorized electrical and plumbing work, though this was resolved within four months. The building has been subject to multiple parking-related issues in recent years, with three driveway blocking incidents reported between January and August 2023, though these are not uncommon in urban areas. Street cleaning matters related to Christmas tree disposal were reported in early 2022, and there were two abandoned vehicle complaints (in 2018 and 2011) near the property, but in each case, the vehicles were gone when authorities arrived. The property underwent several structural and system improvements in the late 1980s, including brick veneer repair and other maintenance work. A recent planning record from 2022 indicates a proposal to connect rooms down to the lower flat and convert them into a bedroom, media room, exercise space, and full bath, with an Affidavit of No Unauthorized Unit on File, though it's unclear from the records if this was completed.

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

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Risk rating

How 735-737 20Th 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
50th percentile

Out of 2250 buildings in this neighborhood, 1125 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
85%
No DBI
violation
15%
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.

DBI complaint rate, owner's portfolio

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

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 12.4%
Severe concern 6.0%
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

735-737 20Th 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 735-737 20Th Ave apartments

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

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