Free SF apartment background check

427 34Th Ave

Outer Richmond, SF 94121 1466047 8 units · 2 fl · 1960

This building has far more open problems than almost any other in the neighborhood. A handful of unresolved issues. Worth a careful walk-through and pointed questions.

NOVs (7y) vs. neighborhood
Compared to a typical building in Outer Richmond
At or below average
avg 0.7
0
FewerMore

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

Rent & eviction protection

Is 427 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 1960
2 or more units
8 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
Units8
Floors2
Year built1960
Total area8,282 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1466047
Ownership

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

Owner name
Wong Raymod W M & Lorraine
Mailing address
Po Box 16695 San Francisco CA 94116
Last sale
092314

Landlord portfolio

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

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Augrented Insights
Initial analysis

The 8-unit, 2-story multi-family residential building at 427 34th Avenue in the Outer Richmond, owned by Raymond W. M. Wong and Lorraine, was constructed in 1960 and has undergone several significant improvements over the past decade. Most recently, in December 2024, the building's fire alarm system is being upgraded to comply with current fire code requirements, including the installation of low-frequency sounders and new compatible devices. The building underwent a voluntary soft-story seismic upgrade in 2010, demonstrating proactive structural reinforcement. Between 2008-2010, several apartments received interior upgrades, including complete kitchen and bathroom remodels in Units 1, 6, and 7, all of which were completed successfully with proper permits.

The building experienced a cluster of violations in February 2016, which were all resolved by December 2016, including issues with fire extinguishers, handrails, smoke detectors, and interior surfaces. More recent maintenance concerns were documented in 2018 regarding wall heater cleaning and a garage door issue, all of which have been addressed. The property has had three fire-related incidents on record (lockout, electrical equipment issue, and gas leak), none of which resulted in civilian injuries. Recent infrastructure work includes electrical repairs in early 2024, specifically addressing the overhead connector. The building's exterior has faced some sidewalk issues near the property, with reports of collapsed sidewalks in 2023-2024, though these are not directly related to building conditions. The extensive history of permit work and the resolution of past violations suggest active property management, though potential residents should note the building's age and the periodic maintenance issues that have arisen over time.

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

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Risk rating

How 427 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
8th percentile

Out of 1040 buildings in this neighborhood, 957 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
46%
No DBI
violation
54%
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.

Number of units

The number of units affects how the model reads complaint and violation totals — more units means more potential sources.

Neighborhood location

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

12-Month severity forecast
No violation 43.0%
Moderate concern 44.7%
Severe concern 12.3%
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

427 34Th Ave event timeline

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

2025
DBI Complaint Aug 13
Possilbe leak inside the wall in one of the bedroom. mold in the unit.
Housing Inspection Services

See all 5 events

Full history back to 2024 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 427 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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