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533 Masonic Ave

Lone Mountain, SF 94117 1174002 4 units · 2 fl · 1923

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 533 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 1923
2 or more units
4 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
Units4
Floors2
Year built1923
Total area3,308 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1174002
Ownership

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

Owner name
Hedda Kornfeld Family Lp Ii
Mailing address
C&d Realty Corporation 2000 Lawton St San Francisco CA 94122
Last sale
000000

Landlord portfolio

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

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Augrented Insights
Initial analysis

The 4-unit, 2-story multi-family residential building at 533 Masonic Ave in the Lone Mountain neighborhood, owned by Hedda Kornfeld Family LP II, was constructed in 1923 and has undergone several significant maintenance and safety-related interventions over its history. The property experienced a major electrical system issue in December 2014 involving a Federal Pacific electric panel and faulty outlets, which led to multiple electrical permits and repairs throughout 2015, including light and switch replacements. The building has a history of safety and maintenance concerns that required intervention, as evidenced by two routine housing inspections in 2001 and 2004, and a follow-up inspection in 2014-2016. The 2014 inspection identified several issues including electrical problems, lead paint concerns, weather-proofing deficiencies, and structural repairs needed for stairs and windows, all of which were addressed and abated by April 2016.

Earlier repairs include a sewer line repair completed in 2014 and a reroofing project from 1994. The building's maintenance history shows attention to pressing safety concerns, with all identified violations being formally abated. Recent infrastructure issues outside the building have been documented through 311 calls, including a collapsed sidewalk in 2023 and a pavement defect near the property in 2022, though these external issues don't directly pertain to the building's condition. The property has maintained an active record of addressing violations and completing necessary repairs, with no current active violations on record.

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

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Risk rating

How 533 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
20th percentile

Out of 519 buildings in this neighborhood, 415 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
69%
No DBI
violation
31%
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.

Estimated permit spend (past 7 years)

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

Building age

Older buildings tend to have more maintenance challenges; SF's pre-1906 earthquake housing stock carries distinct risk.

12-Month severity forecast
No violation 49.2%
Moderate concern 25.7%
Severe concern 25.2%
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

533 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 533 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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