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1231-1233 34Th Ave

Central Sunset, SF 94122 1716005 2 units · 2 fl · 1930

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 Sunset
At or below average
avg 0.7
0
FewerMore

This building has 0 novs (7y), at or below the Central Sunset average of 0.7.

Rent & eviction protection

Is 1231-1233 34Th 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 1930
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 built1930
Total area2,940 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1716005
Ownership

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

Owner name
Steve Cheung Tr
Mailing address
Cheung Steve Trustee 1897 Vinehill Cir Fremont CA 94539
Last sale
030695

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.

1231 34th Ave, San Francisco, CA 94122
1233 34th Ave, San Francisco, CA 94122
Augrented Insights
Initial analysis

The two-unit residential building located at 1231-1233 34th Avenue in the Central Sunset neighborhood is a two-story flats/duplex structure built in 1930, currently owned by Steve Cheung Tr. The building's maintenance record shows several significant repairs over the past decades, including dry rot and termite repairs completed in 2000 (costing $5,900) and a reroofing project completed in 1999. More recently, in December 2016, a new water line installation was successfully completed.

The property has experienced multiple sewer-related issues in 2021, with three documented incidents of sewage backup problems between May and July 2021, along with a sewer operation intervention in September 2021, indicating a period of plumbing infrastructure challenges. A fire complaint investigation in February 2013 found no merit regarding allegations of operating without a permit. The most recent building activity has been limited to typical urban issues, with multiple parking enforcement calls between 2021 and 2024, particularly regarding sidewalk parking violations, though these are largely unrelated to building conditions. The most recent infrastructure work on record was the water line installation in 2016, indicating there have been no major building system upgrades or repairs in the past seven years.

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

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Risk rating

How 1231-1233 34Th 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
49th percentile

Out of 814 buildings in this neighborhood, 415 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.

Neighborhood location

Precise location is a proxy for neighborhood-level risk — some SF blocks have systematically higher DBI activity.

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 81.7%
Moderate concern 11.9%
Severe concern 6.4%
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

1231-1233 34Th 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 1231-1233 34Th 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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