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800 48Th Ave

Outer Richmond, SF 94121 1690037 7 units · 2 fl · 1961

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 Richmond
Above average
avg 0.7
17
FewerMore

This building has 17 novs (7y), above the Outer Richmond average of 0.7.

Rent & eviction protection

Is 800 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 1961
2 or more units
7 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
Units7
Floors2
Year built1961
Total area4,956 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1690037
Ownership

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

Owner name
Warren Lee Trust
Mailing address
Warren Lee, Ttee 1311 29Th Ave San Francisco CA 94122
Last sale
052815

Landlord portfolio

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

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Augrented Insights
Initial analysis

The 7-unit, 2-story multi-family residential building at 800 48th Avenue in the Outer Richmond, owned by Warren Lee Trust, has experienced several significant events since its construction in 1961. Most notably, the building suffered a structural fire in Unit #4 on August 31, 2018, which caused moderate damage to the unit and smoke/water damage to hallways. This incident required substantial repairs, including electrical work, window replacement, and interior remodeling, completed at a cost of $120,000 in 2019. The building is currently non-compliant with San Francisco's Mandatory Soft Story Retrofit Program (Tier 3), with an active violation filed in November 2022 regarding failure to complete required seismic safety work and associated monitoring fees. Recent maintenance issues have emerged, including water damage and mold/mildew problems reported in April 2023, and concerns about stuck windows affecting ventilation.

The property has undergone several important improvements, including a soft-story retrofit permit issued in 2017 (though not completed), reroofing in 2012, and electrical system upgrades. Multiple building violations from 2004-2007 were resolved, including issues with the central alarm system, rear garage door lock, and fire escape ladder maintenance. The building has experienced recurring fire alarm system malfunctions, as documented in fire incidents, though no civilian injuries have been reported in these cases. Recent 311 calls from late 2024 indicate various maintenance issues, including sewer problems and noise complaints, while multiple reports of garbage and debris issues have been documented, suggesting ongoing maintenance challenges. The property's historical records show a mix of resolved and active violations, particularly regarding seismic retrofitting requirements and water damage remediation.

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

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Risk rating

How 800 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
0th percentile

Out of 1040 buildings in this neighborhood, 1040 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
17%
No DBI
violation
83%
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.

DBI tenant complaints (past 7 years)

Formal complaints tenants filed with DBI about this building over 7 years.

Building size

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

12-Month severity forecast
No violation 10.4%
Moderate concern 16.5%
Severe concern 73.1%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

800 48Th Ave apartment reviews

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The story over time

800 48Th Ave event timeline

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

2026
Building Violation (NOV) May 22 Serious
Building violation
Provide a minimum of one fire extinguisher for each 3000 sq. ft. (type 2a-10bc). travel distance shall not exceed 75 feet and readily acces…
Building Violation (NOV)May 22
Building violation

See all 15 events

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

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Every record we have

Full data for 800 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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