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3730-3734 Judah St

Outer Sunset, SF 94122 1797018 2 units · 2 fl · 1956

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 Outer Sunset
At or below average
avg 1.8
1
FewerMore

This building has 1 novs (7y), at or below the Outer Sunset average of 1.8.

Rent & eviction protection

Is 3730-3734 Judah St 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 1956
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 built1956
Total area2,250 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1797018
Ownership

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

Owner name
Tong Kathy Ai Gen
Mailing address
1281 25th Ave San Francisco CA 94122
Last sale
071405

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.

3730 Judah St, San Francisco, CA 94122
3732 Judah St, San Francisco, CA 94122
3734 Judah St, San Francisco, CA 94122
Augrented Insights
Initial analysis

The property at 3730-3734 Judah Street in San Francisco's Outer Sunset neighborhood is a two-unit, two-story multi-family residential building constructed in 1956, currently owned by Kathy Ai Gen Tong. The building has undergone significant and complex renovations over the past decade, including a major 2015-2019 project to add an ADU and modify various interior elements, which was initially completed without proper permits, leading to multiple complaints and violation notices. The property has experienced several safety concerns and building code issues, notably in 2021 when there were complaints about massive unauthorized excavation work affecting neighboring properties and unauthorized removal of rear stairs. Recent improvements include a comprehensive renovation of unit 3734 in 2023 ($35,000), and ongoing work as of 2024 involving utility upgrades and plumbing fixture replacements, including new fire sprinklers installed in 2022. Historical issues included multiple violations for unpermitted construction and electrical work in early 2015, which remain active in the records, though the most recent complaint regarding exit maintenance was corrected in 2022. The building's mechanical systems have been upgraded significantly, with recent permits showing replacement of various electrical fixtures, appliances, and safety systems. The property has also had several maintenance issues documented through 311 calls, including parking violations and sewer problems, though these are generally not directly related to building safety or habitability.

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

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Risk rating

How 3730-3734 Judah St'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
72th percentile

Out of 632 buildings in this neighborhood, 177 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
86%
No DBI
violation
14%
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.

DBI tenant complaints (past 7 years)

Formal complaints tenants filed with DBI about this building over 7 years.

Neighborhood location

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

DBI complaint rate, owner's portfolio

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

12-Month severity forecast
No violation 75.9%
Moderate concern 19.9%
Severe concern 4.2%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
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The story over time

3730-3734 Judah St event timeline

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

2025
Planning Project Dec 22
To comply with DBI NOV 201519891 and 201522161. Legalization and code compliance of ground level unit, add 2 bedrooms, 1 bath, 1 kitchen/living area on the ground level. Reference permit #201507030616 for legalization approval on 02/05/18 (cancelled on 08/29/25)
Submitted
Building PermitOct 08
Adding (2) bedrooms and (1) bath, kitchen, and living area on the ground level to comply with nov# ces-201519891 and ces-201522161.

See all 18 events

Full history back to 2021 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 3730-3734 Judah St 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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