Free SF apartment background check

2005-2011 Mason St

Russian Hill, SF 94133 0074003C 4 units · 3 fl · 1929

Nothing on record for this building in the last seven years, and our model puts it at a low risk of maintenance problems over the next 12 months. No public enforcement record to go on. Walk the building, ask the current tenants how repairs get handled, and get any promises in writing.

NOVs (7y) vs. neighborhood
Records already on file, against a typical building in Russian Hill — not a forecast
At or below average
avg 1.9
0
FewerMore

This building has 0 novs (7y), at or below the Russian Hill average of 1.9.

Rent & eviction protection

Is 2005-2011 Mason 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 1929
2 or more units
4 units
Property type
Multi-Family Residential
Zoning
NBEACH
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.

Statewide backstop · AB 1482

California Tenant Protection Act of 2019

Even when a building isn't covered by local rent stabilization, the statewide Tenant Protection Act (AB 1482) may still apply. It caps annual rent increases and requires the landlord to state a legal reason to end most tenancies.

15+ years since occupancy
Built 1929
Annual rent increase cap
5% + CPI, max 10%
Just-cause eviction
After 12 months
Local rent control likely takes priority. This building appears to fall under the local ordinance above, which is stronger than AB 1482. Where a local just-cause ordinance applies, its rules govern instead of the state cap.

AB 1482 does not apply to single-family homes and condos unless owned by a corporation, REIT, or an LLC with a corporate member; to owner-occupied duplexes; or to deed-restricted affordable housing. The Act is in effect until January 1, 2030. Not legal advice — see the California landlord–tenant guide.

Building characteristics
Units4
Floors3
Year built1929
Total area4,084 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0074003C
Ownership

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

Mailing address
Lam Danny N K & Fok-tang Ni 567 Pine St Ste 201 San Francisco CA 94108
Last sale
July 02, 2001

Landlord portfolio

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

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Multiple entrances & addresses

Included addresses

All street addresses sharing this blocklot that are covered by this report.

2011 Mason St, San Francisco, CA 94133
2009 Mason St, San Francisco, CA 94133
2007 Mason St, San Francisco, CA 94133
2005 Mason St, San Francisco, CA 94133
Augrented Insights
Initial analysis

The property at 2005-2011 Mason Street is a 3-story, 4-unit multi-family residential building constructed in 1929, currently owned by the Lam/Fok-Tang Family Trust. The building has undergone several significant improvements in recent years, with the most notable being a comprehensive fire alarm system upgrade completed in November 2023 that included the installation of addressable smoke detectors, pull stations, and low-frequency horns in sleeping areas to comply with San Francisco Fire Code requirements. Other recent improvements include window replacements in 2015 (with Milgard double-hung wood windows) and 2015-2016 (vinyl windows), reroofing in 2017, and electrical upgrades including a new sub-panel installation in 2012.

The building has experienced some compliance issues in the past, most notably in 2006-2014 when multiple fire safety violations were recorded, including problems with the fire escape system, smoke detection system, and a period of vacancy for which notices were issued. These violations were ultimately abated between 2014 and 2016. The property has maintained an active record of fire safety inspections and corrections over the years, with the most recent fire alarm system violation being issued in October 2023, which appears to have been promptly addressed. Recent 311 calls from 2024 primarily relate to external issues such as sidewalk blockages and garbage concerns, which are not directly related to building safety or habitability. The building's recent maintenance record suggests active management of major systems, particularly with regard to fire safety compliance.

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

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Risk rating

How 2005-2011 Mason 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

Lower risk — safer than most nearby

DBI rarely finds violations here. Strong maintenance history and a clean complaint record.

Typical — about average for the neighborhood

Some past violations or complaints on record. Worth asking the landlord about any open issues before signing.

Higher risk — riskier than most nearby

Elevated violation and complaint history. DBI has found issues here before and is statistically likely to again.

Neighborhood percentile
57thpercentile

Out of 1133 buildings in this neighborhood, 487 are predicted to be safer. The band is relative to this neighborhood, so a share of every neighborhood falls in each colour.

RiskiestSafest
Predicted 12-month outcome
78%
No DBI
violation
22%
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.

Neighborhood location

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

Estimated permit spend (past 7 years)

Dollar value of permits pulled at this address — large recent spend can signal deferred-maintenance catch-up.

12-Month risk forecast
Low failure risk 22%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

2005-2011 Mason St apartment reviews

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On the map

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Buildings nearby
8 found
The story over time

2005-2011 Mason St event timeline

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

2026
311 Request Feb 24
Garbage and debris
human waste or urine
311 RequestJan 28
Garbage and debris

See all 9 events

Full history back to 2020 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 2005-2011 Mason St apartments

13 SF public datasets for this parcel — permits, violations, complaints, fire records, 311 calls, planning records, and buyouts.

Side by side

How 2005-2011 Mason St compares to the neighborhood

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Cancel anytime · Data sourced from SF Open Data, DBI, SFFD, SF Rent Board & Planning

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