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241 Shipley St

South of Market, SF 94107 3753093 2 units · 1 fl · 1908

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 South of Market
At or below average
avg 3.3
0
FewerMore

This building has 0 novs (7y), at or below the South of Market average of 3.3.

Rent & eviction protection

Is 241 Shipley 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 1908
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RSD
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
Floors1
Year built1908
Total area1,500 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot3753093
Ownership

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

Owner name
Mark Kertz & Minnie Loo Rev
Mailing address
Minnie Loo Trustee Po Box 591302 San Francisco CA 94159
Last sale
050500

Landlord portfolio

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

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Augrented Insights
Initial analysis

The property at 241 Shipley Street is a two-unit, one-story multi-family residential building located in San Francisco's South of Market neighborhood. Built in 1908 and currently owned by Mark Kertz and Minnie Loo Rev, this flats and duplex structure has experienced several significant safety and maintenance issues over the past two decades. Most notably, 2024 has seen multiple fire safety violations including issues with extinguishers, alarm systems, and standpipe systems, with some violations being marked as having no merit while others were issued citations. A concerning pattern of fire safety non-compliance emerged in mid-2024, with violations related to sleeping area requirements and sprinkler systems, though many of these issues were subsequently abated.

The building's maintenance history includes a major complaint filed in 1994 regarding substandard conditions, which took until 1997 to resolve, involving problems with handrails, gates, and unauthorized vehicle repairs. More recently, between 2024 and October 2024, there have been numerous reports of waste and debris on and around the property, including multiple instances of liquid spills requiring attention from various city departments. While there have been some fire-related incidents this year, such as an alarm malfunction and a water or steam leak, fortunately there were no civilian injuries reported. The building's fire safety certification history shows while some violations have been abated, including a 2007 requirement for fire system certification, others remain open or were referred to hearings, though as of the most recent data in October 2023, there appear to be no active major violations. The property has also experienced several environmental challenges this year, including flooding on the property in October 2024 and issues with street cleaning.

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

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Risk rating

How 241 Shipley 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
85th percentile

Out of 430 buildings in this neighborhood, 64 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
83%
No DBI
violation
17%
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 permits, owner's portfolio

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

Estimated permit spend (past 7 years)

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

Number of floors

Building height affects maintenance complexity and is one of the size signals the model uses.

12-Month severity forecast
No violation 83.8%
Moderate concern 12.6%
Severe concern 3.6%
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

241 Shipley St event timeline

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

2024
311 Request Jun 23
311 service request
Encampment

See all 2 events

Full history back to 2023 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 241 Shipley 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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