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4210 Judah St

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

A handful of records on file over the last seven years, and our model predicts a high risk of further maintenance problems in the next 12 months. A few records worth reading before you sign. Check whether they were closed out, and ask what was actually fixed.

NOVs (7y) vs. neighborhood
Records already on file, against a typical building in Outer Sunset — not a forecast
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.

The bar and the rating point different ways because they measure different things: the bar counts DBI violations already on file, the rating forecasts the next 12 months.

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.

Statewide backstop · AB 1482

California Tenant Protection Act of 2019

Even when a building isn't covered by local rent stabilization, the statewide Tenant Protection Act (AB 1482) may still apply. It caps annual rent increases and requires the landlord to state a legal reason to end most tenancies.

15+ years since occupancy
Built 1975
Annual rent increase cap
5% + CPI, max 10%
Just-cause eviction
After 12 months
Local rent control likely takes priority. This building appears to fall under the local ordinance above, which is stronger than AB 1482. Where a local just-cause ordinance applies, its rules govern instead of the state cap.

AB 1482 does not apply to single-family homes and condos unless owned by a corporation, REIT, or an LLC with a corporate member; to owner-occupied duplexes; or to deed-restricted affordable housing. The Act is in effect until January 1, 2030. Not legal advice — see the California landlord–tenant guide.

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
Mailing address
Fu Lynda Trustee Po Box 210430 San Francisco CA 94121
Last sale

Landlord portfolio

Other SF properties this owner holds, with a risk rating 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

Lower risk — safer than most nearby

DBI rarely finds violations here. Strong maintenance history and a clean complaint record.

Typical — about average for the neighborhood

Some past violations or complaints on record. Worth asking the landlord about any open issues before signing.

Higher risk — riskier than most nearby

Elevated violation and complaint history. DBI has found issues here before and is statistically likely to again.

Neighborhood percentile
2ndpercentile

Out of 632 buildings in this neighborhood, 619 are predicted to be safer. The band is relative to this neighborhood, so a share of every neighborhood falls in each colour.

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 risk forecast
High failure risk 77%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

4210 Judah St apartment reviews

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On the map

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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.

Side by side

How 4210 Judah St compares to the neighborhood

This building against comparable properties in Outer Sunset. Toggle filters to narrow the peer group.

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Cancel anytime · Data sourced from SF Open Data, DBI, SFFD, SF Rent Board & Planning

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