Free SF apartment background check

1541 48Th Ave

Outer Sunset, SF 94122 1894009 2 units · 2 fl · 1903

This building has more problems than most buildings in this neighborhood. 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
0
FewerMore

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

Rent & eviction protection

Is 1541 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 1903
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RM1
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 built1903
Total area1,714 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1894009
Ownership

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

Owner name
Kent & Minling Ruan Trust
Mailing address
Kent & Minling Ruan Trustee 2110 22Nd Ave San Francisco CA 94116
Last sale
051298

Landlord portfolio

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

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Augrented Insights
Initial analysis

The two-unit residential building at 1541 48th Avenue in San Francisco's Outer Sunset neighborhood, owned by the Kent & Minling Ruan Trust, was constructed in 1903 and is classified as a Flats & Duplex. The property has a history of both maintenance and compliance issues, dating back to 1984 when multiple repairs were completed, including bathroom dry rot remediation and window replacements. A significant permit application from 1998 for a two-story rear addition was ultimately cancelled. More recent concerns include an active building complaint from July 2022 regarding an allegedly unauthorized shed construction on the property line, possibly related to an illegal unit conversion.

The property and its immediate vicinity have experienced multiple parking enforcement issues over the past few years, with several cases of sidewalk parking and illegal parking documented between 2023 and 2024, resulting in at least two citations. Street and sidewalk maintenance records show recurring hazardous materials (glass) cleaning needs in 2019 and 2022, as well as pavement defects addressed in 2021. A hoarding-related fire complaint was investigated and resolved in 2017. While these issues represent various resident experience concerns, it's worth noting that many of the complaints and violations appear to be primarily related to external factors such as street maintenance and parking challenges rather than structural or safety issues directly related to the building itself.

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

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Risk rating

How 1541 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
28th percentile

Out of 632 buildings in this neighborhood, 455 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
60%
No DBI
violation
40%
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.

Neighborhood location

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

Building age

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

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 48.6%
Moderate concern 40.4%
Severe concern 10.9%
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

1541 48Th Ave event timeline

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

2022
DBI Complaint Jul 22
Date last observed: 21-jul-22; time last observed: 4:00; identity of person performing the work: unknown; floor: back yard; exact location: shed; building type: residence/dwelling illegal unit; work w/o permit; other building; ; additional information: shed built on proprty line;
Code Enforcement Section

See all 1 events

Full history back to 2022 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 1541 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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