Free SF apartment background check

1250 48Th Ave

Outer Sunset, SF 94122 1703035 12 units · 2 fl · 1962

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 1250 48Th 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 1962
2 or more units
12 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
Units12
Floors2
Year built1962
Total area6,450 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1703035
Ownership

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

Owner name
Tung Kon Cheung Trust
Mailing address
Tung Kon Cheung Trustee 2335 Lincoln Way San Francisco CA 94122
Last sale
031898

Landlord portfolio

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

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Augrented Insights
Initial analysis

The 12-unit, 2-story multi-family residential building at 1250 48th Avenue in the Outer Sunset, currently owned by the Tung Kon Cheung Trust, has undergone several significant safety and structural improvements since its construction in 1962. Most notably, the building completed its mandatory soft-story seismic retrofit work as a Tier 4 property in 2018, securing a Certificate of Final Completion (CFC). Recent fire safety upgrades include a 2023 fire alarm system enhancement with 12 horn/strobe installations to meet San Francisco Fire Code requirements, following multiple documented fire alarm system inspections and violations between 2018 and 2024, demonstrating ongoing attention to life safety systems.

The building has had several substantial maintenance and repair projects, including the 2018 replacement of damaged stairs in the lightwell ($25,000) and joist repairs due to dry rot in 2021 ($3,000). Historical issues included a significant cluster of interior violations documented in 2000 related to water damage, mold, and various structural concerns, all of which were abated by June 2000. The property has addressed various infrastructure upgrades over the years, including a complete unit renovation in 2010 (kitchen and bath remodel) and window replacements in 2005. An illegal unit was removed in 2011, returning the building to its proper configuration. Recent building history shows regular maintenance and compliance with safety requirements, though there have been recurring issues with fire alarm systems requiring attention and verification between 2018 and 2024, with the most recent complaint from August 2024 being marked as "Condition Corrected" in October 2024.

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

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Risk rating

How 1250 48Th 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
4th percentile

Out of 632 buildings in this neighborhood, 607 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
24%
No DBI
violation
76%
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.

Number of units

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

Building size

Total floor area — a proxy for building scale and the number of systems (plumbing, electrical, HVAC) that can fail.

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 11.1%
Moderate concern 27.6%
Severe concern 61.3%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

1250 48Th Ave apartment reviews

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The story over time

1250 48Th Ave event timeline

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

2024
Fire Complaint Aug 15
Alarm Systems
Condition Corrected

See all 7 events

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

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Every record we have

Full data for 1250 48Th 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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