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229-231 Masonic Ave

Lone Mountain, SF 94118 1109003A 2 units · 2 fl · 1940

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 Lone Mountain
At or below average
avg 0.9
0
FewerMore

This building has 0 novs (7y), at or below the Lone Mountain average of 0.9.

Rent & eviction protection

Is 229-231 Masonic 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 1940
2 or more units
2 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
Units2
Floors2
Year built1940
Total area2,850 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1109003A
Ownership

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

Owner name
Skm Sf2 Llc
Mailing address
405 Sotuh Airport Blvd South San Francisco CA 94080
Last sale
090915

Landlord portfolio

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

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Multiple entrances & addresses

Included addresses

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

229 Masonic Ave, San Francisco, CA 94118
231 Masonic Ave, San Francisco, CA 94118
Augrented Insights
Initial analysis

The property at 229-231 Masonic Avenue is a two-unit, two-story multi-family residential building constructed in 1940, currently owned by Skm Sf2 Llc. The building has undergone several significant renovations over the past two decades, including a basement conversion in 2003 that added two bedrooms, a half bath, and laundry facilities at a cost of $20,000. A kitchen remodel was attempted in 2004-2005, though the initial permit expired, despite subsequent renewals. Important infrastructure updates include furnace and flue pipe installations in 2015, sewer repairs in 2012, and electrical upgrades in 2004-2006. However, the building has experienced multiple concerning issues in recent years, including a complaint in September 2023 about loose tiles in the kitchen posing safety concerns with a child present, and past allegations in 2014 about unauthorized garage conversions and basement living quarters with inadequate safety features. The property has also had some maintenance needs addressed, such as stucco and dry rot repairs in 1998.

Recent activity around the property has been focused on graffiti removal, with multiple incidents reported between July and November 2024, though these were primarily affecting public infrastructure rather than the building itself. Two recent 311 calls for service regarding the building were logged in January 2025. While many historical permits suggest ongoing maintenance and upgrading of building systems, the presence of multiple complaints regarding unauthorized modifications and safety concerns raises questions about the thoroughness of renovation oversight. The most recent building complaint from September 2023 is particularly notable due to its recent nature and safety implications, though its current status is listed as "Not Active."

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

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Risk rating

How 229-231 Masonic 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
25th percentile

Out of 519 buildings in this neighborhood, 389 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
73%
No DBI
violation
27%
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.

DBI tenant complaints (past 7 years)

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

Permit rate, owner's portfolio

Per-building permit rate across the owner's portfolio.

Construction spend, owner's portfolio

Estimated permit value across all of this owner's buildings.

12-Month severity forecast
No violation 69.3%
Moderate concern 24.7%
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

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The story over time

229-231 Masonic Ave event timeline

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

2026
311 Request Jan 31
Not offensive
fire police callbox

See all 3 events

Full history back to 2023 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 229-231 Masonic 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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