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233-235 20Th Ave

Central Richmond, SF 94121 1413006 2 units · 2 fl · 1924

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 233-235 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 1924
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RM1
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 built1924
Total area3,180 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1413006
Ownership

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

Owner name
Yee Bettina Revocable Trust
Mailing address
Bettina Yee 4915 Stoneridge Ct Oakland CA 94605
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.

233 20th Ave, San Francisco, CA 94121
235 20th Ave, San Francisco, CA 94121
Augrented Insights
Initial analysis

The property at 233-235 20th Avenue in the Central Richmond neighborhood is a two-unit, two-story multi-family residential building constructed in 1924, currently owned by the Yee Bettina Revocable Trust. The building has undergone several notable improvements over its lifetime, with the most significant recent renovation occurring in 2022, which included comprehensive remodeling of the kitchen, laundry area, and bathroom, along with electrical upgrades including a new sub-panel installation, with a permitted cost of $40,000. Historical records show earlier maintenance work including reroofing in 1995 and dry rot repairs in 1988, though a proposed kitchen renovation in 2009 was cancelled.

The building's maintenance and incident history has been relatively uneventful, with the most recent significant issue being a sewage back-up discharge from the side sewer vent in November 2024. There have been multiple parking-related incidents near the property, including two instances of sidewalk parking by an orange Subaru in January 2024, though enforcement officers were unable to validate the violations. The surrounding area has experienced periodic street cleaning needs, with several reports of loose garbage and abandoned items between 2019 and 2021, all of which were resolved through appropriate pickup services. While these external issues occurred outside the building itself, they provide context about the immediate neighborhood environment and the property's maintenance history.

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

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Risk rating

How 233-235 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
95th percentile

Out of 2250 buildings in this neighborhood, 112 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
93%
No DBI
violation
7%
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 permits, owner's portfolio

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

Building age

Older buildings tend to have more maintenance challenges; SF's pre-1906 earthquake housing stock carries distinct risk.

Permit rate, owner's portfolio

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

12-Month severity forecast
No violation 86.6%
Moderate concern 11.0%
Severe concern 2.4%
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

233-235 20Th Ave event timeline

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

2025
311 Request Dec 08
Other excessive noise
Noise
Building PermitFeb 03
Re-roofing: remove and replace roofing material / existing roofing material (in-kind)

See all 5 events

Full history back to 2022 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 233-235 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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Cancel anytime · Data sourced from SF Open Data, DBI, SFFD, SF Rent Board & Planning

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