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1235 Bay St

Marina, SF 94123 0473019 13 units · 3 fl · 1923

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 Marina
Above average
avg 1.1
24
FewerMore

This building has 24 novs (7y), above the Marina average of 1.1.

Rent & eviction protection

Is 1235 Bay 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
13 units
Property type
Multi-Family Residential
Zoning
RM1
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 built1923
Total area12,840 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0473019
Ownership

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

Owner name
Square Assets Llc
Mailing address
2269 Chestnut St # 111 San Francisco CA 94123
Last sale
031521

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 multi-family residential building at 1235 Bay Street in the Marina neighborhood, owned by Square Assets LLC, has undergone significant improvements since its construction in 1923, with recent major works including the addition of one unit (Unit 14) in 2016-2018, mandatory soft-story retrofit completion, and comprehensive fire safety system upgrades. The building received mandatory soft-story seismic improvements in 2016-2018 at a cost of $160,000, followed by the installation of new fire safety systems including alarms in 2020 ($39,000) and sprinklers to protect newly added units and garage spaces in 2018 ($17,790). Recent maintenance includes a bathroom remodel in Unit 2 in 2022 ($22,000) and ongoing attention to fire safety equipment, with the most recent fire inspection noting an extinguisher violation in September 2023 that was subsequently abated.

The property has experienced several maintenance and habitability issues over the years, including a significant complaint in 2023 regarding mold in Unit 10 (last observed January 2023, abated July 2023), and a 2022 complaint about insect/rodent issues related to pigeon droppings affecting multiple units. There were also building system concerns documented in 2020 regarding weatherproofing, windows, mold, and water intrusion, though these violations were abated in October 2022. Earlier issues included alleged sewage problems in 2018 and construction-related noise complaints in 2017. The building's maintenance history shows regular unit renovations, including kitchen and bathroom upgrades in Units 1, 2, 11, 13, and 14, as well as infrastructure improvements such as boiler replacement and plumbing system upgrades. Although there have been multiple fire safety complaints recorded between 2007 and 2023, including issues with alarms, sprinklers, and fire escapes, most violations were promptly addressed and corrected, with the 2023 extinguisher violation being the most recent fire safety concern.

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

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Risk rating

How 1235 Bay 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
1th percentile

Out of 988 buildings in this neighborhood, 978 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
16%
No DBI
violation
84%
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.

Building size

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

NOV rate, owner's portfolio

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

12-Month severity forecast
No violation 7.8%
Moderate concern 36.5%
Severe concern 55.7%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

1235 Bay St apartment reviews

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The story over time

1235 Bay St event timeline

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

2026
311 Request Feb 15
311 service request
Encampment

See all 24 events

Full history back to 2019 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 1235 Bay 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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