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329-331 Masonic Ave

Lone Mountain, SF 94118 1163003 2 units · 2 fl · 1941

This building has a higher-than-average number of open problems nearby. 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 329-331 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 1941
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 built1941
Total area2,450 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot1163003
Ownership

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

Owner name
Lee Family Trust 2018
Mailing address
Ronald Scott & Cynthia Lee 225 19Th Ave Apt 3 San Francisco CA 94121
Last sale
042399

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.

331 Masonic Ave, San Francisco, CA 94118
329 Masonic Ave, San Francisco, CA 94118
Augrented Insights
Initial analysis

The two-unit residential building at 329-331 Masonic Avenue, owned by the Lee Family Trust 2018, is a two-story flats and duplex structure constructed in 1941 in the Lone Mountain neighborhood. The building's maintenance history includes a completed reroofing project from 2005 costing $7,780, and a sewer repair completed in 2010, suggesting attention to basic infrastructure needs. The property has experienced recurring issues with sidewalk parking violations, particularly noticeable between June and October 2023, with three cases of officers being unable to locate the offending vehicles and one resulting in a citation. There were also several instances of graffiti in 2023-2024, including both offensive and non-offensive tags on various surfaces such as poles and the building itself, all of which have been addressed as evidenced by case resolutions.

Recent municipal service interactions indicate ongoing challenges with waste management and street maintenance in the vicinity, with multiple reports in 2024 regarding garbage issues and toter placement, though inspections found no evidence of persistent problems. A fire alarm system issue was reported and resolved in November 2011, with the condition corrected the same day. While the building has had its share of minor maintenance and neighborhood challenges, records show that most reported issues have been addressed promptly through appropriate channels, with building permits demonstrating basic upkeep of essential systems.

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

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Risk rating

How 329-331 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
62th percentile

Out of 519 buildings in this neighborhood, 197 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
87%
No DBI
violation
13%
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.

Construction spend, owner's portfolio

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

DBI complaint rate, owner's portfolio

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

Building permits, owner's portfolio

Permits pulled across all of this owner's buildings over 7 years.

12-Month severity forecast
No violation 83.4%
Moderate concern 12.3%
Severe concern 4.4%
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

329-331 Masonic Ave event timeline

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

No dated public records on file yet.
Every record we have

Full data for 329-331 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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