Free SF apartment background check

1143-1151 Bay St

Marina, SF 94123 0474021 5 units · 2 fl · 1950

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 Marina
At or below average
avg 1.1
0
FewerMore

This building has 0 novs (7y), at or below the Marina average of 1.1.

Rent & eviction protection

Is 1143-1151 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 1950
2 or more units
5 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
Units5
Floors2
Year built1950
Total area4,717 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0474021
Ownership

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

Owner name
Donna Wong Survivor'S Tr
Mailing address
Wong Donna Trustee 275 Marina Blvd San Francisco CA 94123
Last sale
000000

Landlord portfolio

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

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Multiple entrances & addresses

Included addresses

All street addresses sharing this blocklot that are covered by this report.

1145 Bay St, San Francisco, CA 94123
1151 Bay St, San Francisco, CA 94123
1149 Bay St, San Francisco, CA 94123
1143 Bay St, San Francisco, CA 94123
1147 Bay St, San Francisco, CA 94123
Augrented Insights
Initial analysis

The property at 1143-1151 Bay Street is a two-story, 5-unit multi-family residential building constructed in 1950, currently owned by the Donna Wong Survivor's Trust. The building underwent a significant soft-story retrofit in 2017, costing $90,000, which was completed in compliance with San Francisco earthquake safety requirements. Historical records show the building required compliance work in 1987 (completed), and had a reroofing project in 1992. Multiple routine housing inspections have been conducted over the years, with the most recent active inspection from 2016. The building has experienced several issues related to egress obstruction and gas meter instructions between 2005 and 2008, though all violations were abated, primarily around 2006-2008.

Recent concerns include a mold and mildew report filed in November 2024, which was transferred to the SF Department of Public Health's Healthy Housing Program. There have been two parking-related incidents involving blocked driveways in 2024, with citation issued in one case. Other recent complaints in the surrounding area include pavement defects reported in 2024, graffiti on a fire hydrant in 2021, and various street maintenance issues in 2019. The building has experienced three false fire alarms or malfunctioning alarm system incidents, though no civilian injuries were reported in connection with these events. The property's most recent infrastructure improvements, particularly the completed soft-story retrofit, suggest attention to structural safety, though routine inspections indicate ongoing monitoring of building conditions.

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

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Risk rating

How 1143-1151 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
40th percentile

Out of 988 buildings in this neighborhood, 593 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.

Number of units

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

NOV rate, owner's portfolio

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

DBI complaint rate, owner's portfolio

Per-building complaint rate across the owner's portfolio.

12-Month severity forecast
No violation 73.2%
Moderate concern 9.1%
Severe concern 17.6%
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

1143-1151 Bay St event timeline

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

2025
DBI Complaint Nov 03
Date last observed: 01-nov-25; exact location: main bldg; building type: residence/dwelling ; additional information: address identification is not 4 inches high and doesn’t have required stroke width that violate the code. address numbers displayed currently are too small. ;
Building Inspection Division
DBI ComplaintNov 03
Date last observed: 01-nov-25; exact location: main bldg; building type: residence/dwelling ; additional information: address identification is not 4 inches high and doesn’t have required stroke width that violate the code. it is too small. ;

See all 6 events

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

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Every record we have

Full data for 1143-1151 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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