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1351 Mason St

Nob Hill, SF 94133 0181004 13 units · 3 fl · 1911

This building has far more open problems than almost any other in the neighborhood. Renters here report frequent, slow-to-fix problems. Get repair promises in writing and check the unit before signing.

NOVs (7y) vs. neighborhood
Compared to a typical building in Nob Hill
Above average
avg 2.4
6
FewerMore

This building has 6 novs (7y), above the Nob Hill average of 2.4.

Rent & eviction protection

Is 1351 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 1911
2 or more units
13 units
Property type
Multi-Family Residential
Zoning
RC3
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
Units13
Floors3
Year built1911
Total area10,743 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0181004
Ownership

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

Owner name
Michael Gong & Amy Lui Revo
Mailing address
Michael Gong & Amy Lui, Tru 1325 Howard Ave #221 Burlingame CA 94010
Last sale
102915

Landlord portfolio

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

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Augrented Insights
Initial analysis

The 13-unit, 3-story apartment building at 1351 Mason Street in Nob Hill, owned by Michael Gong & Amy Lui Revo, has undergone significant recent improvements totaling over $500,000 in permitted work since 2022. The property, built in 1911, successfully completed its Mandatory Soft Story Retrofit Program requirements as a Tier 3 building, achieving Certificate of Final Completion and Fire Code compliance. Recent major projects include the installation of three ADUs in 2024, comprehensive renovations of multiple units (2, 3, and 4) in 2023-2024 involving kitchen and bathroom remodels, window replacements, and associated mechanical systems upgrades. The building has maintained active fire safety compliance, with recent permits for upgrading the fire alarm system and installing a new fire sprinkler system. Historical fire safety issues were addressed promptly, with confirmed corrections in 2018, 2019, and 2023, though a recent fire alarm system upgrade permit was issued in November 2024.

The building's maintenance record shows consistent attention to infrastructure improvements, including a complete reroofing in 2022 and significant plumbing and electrical upgrades throughout. While there have been several building violations and complaints over the years, including issues with fire extinguisher maintenance and heating system requirements in 2000-2008, these were typically resolved promptly. A notice of violation for illegal short-term rentals was issued in 2021, but this was subsequently abated. Recent complaints in 2024 regarding fire extinguisher tagging and system compliance were also promptly addressed and abated. The property has experienced some construction-related disruption as evidenced by noise complaints in 2017 and 2020, but these issues appear to have been temporary. The building's ongoing maintenance and improvement history, particularly the recent focus on fire safety upgrades and compliance with soft-story retrofit requirements, demonstrates active management of the property's structural and safety systems.

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

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Risk rating

How 1351 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
9th percentile

Out of 1125 buildings in this neighborhood, 1024 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
19%
No DBI
violation
81%
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.

Building size

Total floor area — a proxy for building scale and the number of systems (plumbing, electrical, HVAC) that can fail.

Number of units

The number of units affects how the model reads complaint and violation totals — more units means more potential sources.

DBI tenant complaints (past 7 years)

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

12-Month severity forecast
No violation 9.8%
Moderate concern 66.3%
Severe concern 23.9%
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

1351 Mason St event timeline

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

2026
Fire Complaint May 08
Extinguishers
Violation Issued
Fire ComplaintMay 08
Alarm Systems

See all 26 events

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

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Every record we have

Full data for 1351 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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