Free SF apartment background check

4210 Judah St

Outer Sunset, SF 94122 1802048 12 units · 3 fl · 1975

This building has far more open problems than almost any other in the neighborhood. Renters here report frequent, slow-to-fix problems. Get repair promises in writing and check the unit before signing.

NOVs (7y) vs. neighborhood
Compared to a typical building in Outer Sunset
At or below average
avg 1.8
0
FewerMore

This building has 0 novs (7y), at or below the Outer Sunset average of 1.8.

Rent & eviction protection

Is 4210 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 1975
2 or more units
12 units
Property type
Multi-Family Residential
Zoning
RH3
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
Units12
Floors3
Year built1975
Total area10,869 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1802048
Ownership

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

Owner name
Lynda Fu Fmly Tr
Mailing address
Fu Lynda Trustee Po Box 210430 San Francisco CA 94121
Last sale
000000

Landlord portfolio

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

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Augrented Insights
Initial analysis

The 12-unit apartment building at 4210 Judah St in San Francisco's Outer Sunset neighborhood is a three-story multi-family residential structure built in 1975 and currently owned by the Lynda Fu Family Trust. The property has undergone several significant improvements over the past decade, with the most recent work completed in December 2023 involving a comprehensive remodel of Unit 304, including kitchen and bathroom updates, new flooring, electrical work, and subpanel replacement, at a cost of $50,000. Prior major improvements include a 2014 window and siding replacement project valued at $160,000, and a sewer line repair in 2019. The building has experienced some fire safety issues, with a fire extinguisher violation issued in May 2024 that was subsequently abated, though there were no injuries reported from any fire-related incidents. The property's maintenance history shows regular attention to infrastructure, including plumbing updates for Unit 203 in 2012 and a gas test certification.

The building's recent history shows an increase in environmental cleanliness issues in the immediate vicinity, with multiple 311 calls between 2022 and 2024 reporting problems such as garbage and debris, waste removal needs, and illegal parking. There have also been several encampment-related incidents reported near the property between July and September 2024, though these cases were generally resolved without confirmation of their location. A routine housing inspection in 2002 showed compliance with regulations, and this remains the most recent formal inspection on record. The property has experienced occasional false fire alarms and smoke detector malfunctions, but no actual fire incidents with civilian injuries. The building's maintenance record suggests regular upkeep of the property, with multiple permits for various improvements and repairs being properly obtained and completed over time.

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

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Risk rating

How 4210 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
3th percentile

Out of 632 buildings in this neighborhood, 613 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
23%
No DBI
violation
77%
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 11.7%
Moderate concern 22.3%
Severe concern 66.0%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

4210 Judah St apartment reviews

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The story over time

4210 Judah St event timeline

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

2026
DBI Complaint Jun 05
No violations; affidavits received.
Housing Inspection Services

See all 8 events

Full history back to 2019 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 4210 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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