Free SF apartment background check

439-443 Judah St

Inner Sunset, SF 94122 1844045 3 units · 3 fl · 1905

This building has significantly more problems than most nearby buildings. Few open issues; problems get fixed quickly. A reasonable bet for a smooth tenancy.

NOVs (7y) vs. neighborhood
Compared to a typical building in Inner Sunset
At or below average
avg 1.1
1
FewerMore

This building has 1 novs (7y), at or below the Inner Sunset average of 1.1.

Rent & eviction protection

Is 439-443 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 1905
2 or more units
3 units
Property type
Multi-Family Residential
Zoning
NC2
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
Units3
Floors3
Year built1905
Total area2,273 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1844045
Ownership

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

Owner name
Hui Otto
Mailing address
1830 Castenada Dr Burlingame CA 94010
Last sale
060217

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.

441 Judah St, San Francisco, CA 94122
443 Judah St, San Francisco, CA 94122
439 Judah St, San Francisco, CA 94122
Augrented Insights
Initial analysis

The three-unit multi-family residential building at 439-443 Judah Street in the Inner Sunset, owned by Hui Otto, has undergone several significant modifications since 2010. The most substantial work occurred in 2015 when a ground floor unit was legalized, including the installation of a kitchen, bedroom, and living room, with the building receiving sprinkler system modifications under permit 201502067730. Additional improvements included comprehensive plumbing and electrical upgrades for the new unit, though recent violations filed in July 2024 have raised concerns about incomplete landscaping, permeable surfaces, and the absence of ground floor sprinkler system permits related to this work, with active enforcement proceedings ongoing as of September 2024. The building underwent various other improvements between 2008-2011, including bathroom and kitchen renovations on multiple floors, front facade modifications, and interior room reconfigurations. A notable building complaint was filed in 2021 regarding noise concerns related to a neighboring gym's operations, though this was marked as not active by April 2022. Historical records show a brief heating and hot water issue in 2009 that was resolved within approximately two months.

The property has experienced several maintenance and service requests in recent years, primarily related to exterior and public space concerns, including multiple general cleaning and garbage-related incidents in 2022-2024. A complaint regarding sewer vent issues was documented in December 2021, which was subsequently resolved. The building's permit history reveals a pattern of unit conversions and safety system upgrades, with the most recent inspection-related violations suggesting potential compliance issues with previously approved work. The property's age (built in 1905) and history of renovations suggest ongoing maintenance and monitoring of building systems and compliance requirements will be necessary, particularly in light of the recent active building violations.

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

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Risk rating

How 439-443 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
16th percentile

Out of 1493 buildings in this neighborhood, 1254 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
62%
No DBI
violation
38%
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.

DBI complaint rate, owner's portfolio

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

Building age

Older buildings tend to have more maintenance challenges; SF's pre-1906 earthquake housing stock carries distinct risk.

12-Month severity forecast
No violation 52.9%
Moderate concern 35.8%
Severe concern 11.3%
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

439-443 Judah St event timeline

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

2025
Building Permit Mar 14
Proposed permeable area at front yard of the house and partially comply nov (additioanl work - permit required per sfbc106.4.7) #202425751. 60 square feet of landscaping, 81 square feet of permeable driveway pavers.
$10,000 · Issued
Planning RecordMar 14
To comply with NOV 202425751, landscaping and permeable surface was not installed under completed P.A. 201502067730. This permit will install landscaping (approximately 31 square feet at east; 29 square feet at west) and a permeable driveway (approximately 81 square feet); 23% will be landscaped and 55% of the front setback area will be permeable. No work to building proposed.

See all 6 events

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

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Every record we have

Full data for 439-443 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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