Free SF apartment background check

1135 Bay St

Marina, SF 94123 0474022A 12 units · 3 fl · 1924

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
10
FewerMore

This building has 10 novs (7y), above the Marina average of 1.1.

Rent & eviction protection

Is 1135 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 1924
2 or more units
12 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
Units12
Floors3
Year built1924
Total area9,219 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0474022A
Ownership

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

Owner name
Bay Street Investors Llc
Mailing address
9 Woodside Way San Rafael CA 94901
Last sale
052898

Landlord portfolio

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

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Augrented Insights
Initial analysis

The 12-unit, 3-story apartment building at 1135 Bay Street is a 1924 multi-family residential structure owned by Bay Street Investors LLC that has undergone several significant improvements and faced various maintenance challenges over the years. Most notably, the building completed a mandatory soft-story retrofit in 2017 at a cost of $90,000 to improve seismic safety. Recent issues related to the building's mechanical systems have been of particular concern, with multiple boiler permit violations between 2020 and 2023, including a citation in October 2023 for the alarm system maintenance. The building has experienced multiple fire safety-related incidents and violations, including blocked exits, sprinkler system issues, and multiple alarm system problems between 2017 and 2023, though most were marked as "Condition Corrected."

The property has faced several maintenance challenges in recent years, particularly during late 2021 through 2022, when multiple complaints were filed regarding unsafe work practices involving lead paint removal and inconsistent heating systems. Numerous building and fire safety violations were identified between 2006 and 2020, including issues with fire escape ladders, smoke enclosure doors, handrails, means of egress, and various fire protection systems. Historical maintenance work includes reroofing (1990), water heater replacement (2013), and installation of LED flood lights (2016). Recent activity in early 2025 has shown multiple reports of sidewalk blockage, garbage issues, and graffiti in the vicinity of the building, while internal building systems appear to receive regular attention from inspection services. The building's owners have generally addressed violations and completed required safety improvements, as evidenced by the issuance of Certificates of Completion for multiple work items, though there have been recurring issues with timely permit renewals for critical systems like the boiler.

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

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Risk rating

How 1135 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
0th percentile

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

RiskiestSafest
Predicted 12-month outcome
14%
No DBI
violation
86%
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.

DBI tenant complaints (past 7 years)

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

Building size

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

12-Month severity forecast
No violation 12.2%
Moderate concern 37.1%
Severe concern 50.7%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

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On the map

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The story over time

1135 Bay St event timeline

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

2026
Electrical Permit Jun 16
Ref: witness test fee for e202603139621
Issued
Electrical PermitMar 13
Online electrical permit: 120 of buildings of 7-12 dwelling units. modification of an existing fire alarm system by upgrading the fire panel, update all existing devices to be compatible with new facp and provide low frequency sounders in all sleeping areas to meet 75db

See all 17 events

Full history back to 2021 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 1135 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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