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1529-1533 Mason St

Russian Hill, SF 94133 0149006 3 units · 3 fl · 1912

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 Russian Hill
At or below average
avg 1.9
1
FewerMore

This building has 1 novs (7y), at or below the Russian Hill average of 1.9.

Rent & eviction protection

Is 1529-1533 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 1912
2 or more units
3 units
Property type
Multi-Family Residential
Zoning
RM2
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
Units3
Floors3
Year built1912
Total area2,874 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0149006
Ownership

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

Owner name
Cheng/Wong Fmly Tr
Mailing address
Cheng Chung Hin & Wong Anit 25 Whistling Swan Irvine CA 92604
Last sale
082418

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.

1529 Mason St, San Francisco, CA 94133
1531 Mason St, San Francisco, CA 94133
1533 Mason St, San Francisco, CA 94133
Augrented Insights
Initial analysis

The three-unit, three-story multi-family residential building at 1529-1533 Mason Street in Russian Hill, owned by the Cheng/wong Family Trust, has undergone several significant renovations and maintenance activities since its construction in 1912. Most recently, in late 2024, the property has seen multiple improvements including a bathroom remodel ($28,500) and kitchen modifications involving washer/dryer hookups ($9,500, later revised to remove laundry features). These improvements follow a pattern of consistent maintenance upgrades, including a 2020 kitchen renovation and electrical panel replacement ($17,000). The building has also faced some challenges, including a notable 2022 incident involving unauthorized underground water piping installation, which was promptly addressed within nine days of the violation being filed. Previous violations from 2000 required attention to various safety and compliance issues, including fire safety concerns, security requirements, and interior surface maintenance, though all were abated by 2002. A 2018 fire incident related to exit/storage pathway obstructions was also recorded but was subsequently resolved.

The property has experienced recurring issues with driveway and bin management in recent months, with multiple parking enforcement calls and complaints about garbage toters being left out continuously. There have been several electrical and plumbing upgrades, including recent permits for bathroom and kitchen improvements in late 2024, suggesting ongoing investment in building maintenance and modernization. Historical records show regular housing inspections between 2000 and 2010, with most concerns being routine rather than severe. While the building has had its share of violations and complaints, recent records (post-2020) indicate improved maintenance and resolution of many historical issues, though the recent uptick in parking-related complaints and garbage management concerns suggests some operational challenges remain.

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

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Risk rating

How 1529-1533 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

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
38th percentile

Out of 1133 buildings in this neighborhood, 702 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
65%
No DBI
violation
35%
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.

NOV rate, owner's portfolio

Per-building NOV rate across everything this owner manages — high rates signal pattern neglect.

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 severity forecast
No violation 58.2%
Moderate concern 32.3%
Severe concern 9.5%
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

1529-1533 Mason St event timeline

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

2026
Building Permit Jun 04
Add 2 bedroom, 1 bathroom adu under state adu program at (e) ground floor.
$150,000 · Filed
Plumbing PermitApr 16
Remodel kitchen & bathroom: relocate toilet, rebuild shower pan and replace kitchen sink.

See all 23 events

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

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Every record we have

Full data for 1529-1533 Mason 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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