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1451-1453 Thomas Ave

Bayview, SF 94124 4809022A 2 units · 2 fl · 1910

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 Bayview
At or below average
avg 4.5
0
FewerMore

This building has 0 novs (7y), at or below the Bayview average of 4.5.

Rent & eviction protection

Is 1451-1453 Thomas Ave 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 1910
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RH1
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
Floors2
Year built1910
Total area2,800 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot4809022A
Ownership

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

Owner name
Est Of Micheal L Brown
Mailing address
Meli T Brown Administratrix 2275 Dover Ave Fairfield CA 94533
Last sale
021799

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.

1451 Thomas Ave, San Francisco, CA 94124
1453 Thomas Ave, San Francisco, CA 94124
Augrented Insights
Initial analysis

The property at 1451-1453 Thomas Ave in the Bayview neighborhood is a two-unit, two-story multi-family residential building constructed in 1910 and currently owned by the Estate of Michael L Brown. The building has experienced several significant issues over the past two decades, with the most concerning recent incidents occurring in 2017, when there were complaints of extensive mold, flooding, and possible illegal unit modifications. These issues follow a pattern of violations and repairs dating back to 2001, when the property faced multiple violations regarding an unauthorized habitable shed unit, which was subsequently reverted to storage use. The building underwent some improvements in 2015, including electrical system upgrades with the installation of 2 - 100a meter main services, and repairs to dry rot on the back deck. However, there have been persistent maintenance and safety concerns, including multiple building violations in 2015 regarding water damage, damaged interior surfaces, mold, and electrical issues. The property has also had various infrastructure matters recently, with multiple 311 calls in late 2024 regarding tree maintenance issues, garbage concerns, and sidewalk defects, indicating ongoing maintenance needs. A fire incident regarding electrical wiring was recorded, though no civilian injuries were reported.

While the building has undergone some repairs and improvements over the years, the persistent pattern of violations and maintenance issues, particularly regarding moisture damage and unauthorized modifications, suggests ongoing challenges with building upkeep and regulatory compliance. Recent 311 calls indicate continued attention needed for property maintenance, particularly regarding exterior and infrastructure elements. The most recent building permits show some structural upkeep continues to be addressed, though the pattern of past violations suggests careful monitoring of building conditions would be prudent.

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

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Risk rating

How 1451-1453 Thomas Ave'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
47th percentile

Out of 382 buildings in this neighborhood, 202 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
53%
No DBI
violation
47%
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.

Neighborhood location

Precise location is a proxy for neighborhood-level risk — some SF blocks have systematically higher DBI activity.

Neighborhood location

Precise location is a proxy for neighborhood-level risk — some SF blocks have systematically higher DBI activity.

Building age

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

12-Month severity forecast
No violation 53.1%
Moderate concern 34.1%
Severe concern 12.8%
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

1451-1453 Thomas Ave event timeline

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

2026
DBI Complaint May 12
Caller reporting possible illegal 3rd unit below, and caller is concerned he is paying electrical for extra usage
Housing Inspection Services
DBI ComplaintApr 16
Date last observed: 01-apr-26; time last observed: 10am; unit: basement ; exact location: main bldg; building type: residence/dwelling illegal unit; no power to an outlet; electrical work previously installed w/o permit; other electrical; ; additional information: the unit downstairs in the basement is connect to my meter without my knowledge or agreement ;

See all 2 events

Full history back to 2026 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 1451-1453 Thomas Ave 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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