Free SF apartment background check

501 Lake St

Lake Street, SF 94118 1366048 8 units · 3 fl · 1963

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 Lake Street
At or below average
avg 0.6
0
FewerMore

This building has 0 novs (7y), at or below the Lake Street average of 0.6.

Rent & eviction protection

Is 501 Lake 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 1963
2 or more units
8 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
Units8
Floors3
Year built1963
Total area7,764 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1366048
Ownership

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

Owner name
Patrick J & Deirdre F Stack
Mailing address
Stack Patrick J & Deirdre F 116 18Th Ave San Francisco CA 94121
Last sale
060602

Landlord portfolio

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

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Augrented Insights
Initial analysis

501 Lake Street is a 3-story, 8-unit multi-family residential building constructed in 1963, currently owned by Patrick J & Deirdre F Stack. The building has undergone significant improvements in recent years, including a completed $26,000 residing project along the north wall in 2023 and a major fire alarm system upgrade in June 2023 to meet current safety standards. The property completed its mandatory soft-story retrofit in 2017 (Tier 3) at a cost of $75,000, enhancing seismic safety. Individual unit improvements have been substantial, with Unit 201 receiving a comprehensive renovation in 2019 including bathroom retile, kitchen updates, and electrical rewiring, while Units 101 and 201 underwent bathroom improvements in 2015 with new extractor fan installations.

The building's maintenance history shows attention to both structural and safety concerns, including plumbing improvements such as a new house trap installation in 2012, and various bathroom remodels across multiple units between 2003-2004. While there were several housing complaints filed in 2003 regarding mold, plumbing, and fire safety issues, all these complaints were resolved, with the most recent routine apartment inspection occurring in 2008. A 2020 complaint about the building's exterior facade maintenance was filed, but this was prior to the recent siding repairs completed in 2023. Recent 311 calls (2021-2024) primarily relate to external issues such as garbage collection noise and sidewalk conditions, which have been addressed through normal city processes.

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

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Risk rating

How 501 Lake 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
22th percentile

Out of 660 buildings in this neighborhood, 515 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
72%
No DBI
violation
28%
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.

DBI tenant complaints (past 7 years)

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

12-Month severity forecast
No violation 52.1%
Moderate concern 41.8%
Severe concern 6.1%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

501 Lake St apartment reviews

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The story over time

501 Lake St event timeline

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

2026
311 Request Feb 23
Garbage and debris
other loose garbage debris yard waste
Electrical PermitJan 31
Ref: witness test fee for ew202306302251

See all 12 events

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

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Every record we have

Full data for 501 Lake 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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