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1361 Mason St

Nob Hill, SF 94133 0181002 3 units · 3 fl · 1923

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 Nob Hill
At or below average
avg 2.4
0
FewerMore

This building has 0 novs (7y), at or below the Nob Hill average of 2.4.

Rent & eviction protection

Is 1361 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 1923
2 or more units
3 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
Units3
Floors3
Year built1923
Total area4,083 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0181002
Ownership

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

Owner name
Yee Jonah S
Mailing address
1319 Mason St San Francisco CA 94133
Last sale
020296

Landlord portfolio

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

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Augrented Insights
Initial analysis

The three-unit multi-family residential building at 1361 Mason Street in Nob Hill, owned by Jonah S. Yee, is a three-story structure built in 1923 that also includes commercial space. The property has a relatively simple maintenance history, with a roof replacement project initiated in October 1995, though records show this permit has since expired. The most pressing recent issues have centered around waste management and street maintenance, with multiple reports of overflowing city garbage cans in early 2024 (February and March) and a damaged fallen tree in December 2023. The building's location has experienced recurring public space maintenance challenges, evidenced by several reports of general cleaning needs between 2021 and 2024, including instances of loose garbage, litter receptacle issues, and a documented case of either human or animal waste in October 2022. While most of these issues have been resolved through DPW or Recology intervention, they suggest ongoing concerns with street-level maintenance in the immediate vicinity of the building.

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

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Risk rating

How 1361 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
65th percentile

Out of 1125 buildings in this neighborhood, 394 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
72%
No DBI
violation
28%
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.

Property class: apartment building

Apartment building — this property classification influences expected violation rates.

Building age

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

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 52.9%
Moderate concern 31.8%
Severe concern 15.3%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

1361 Mason St apartment reviews

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The story over time

1361 Mason St event timeline

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

2025
311 Request Oct 22
Parking on sidewalk
Parking Enforcement

See all 2 events

Full history back to 2024 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 1361 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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