Free SF apartment background check

3130 Broderick St

Marina, SF 94123 0935006B 8 units · 3 fl · 1928

This building has more problems than most buildings in this neighborhood. 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
1
FewerMore

This building has 1 novs (7y), at or below the Marina average of 1.1.

Rent & eviction protection

Is 3130 Broderick 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 1928
2 or more units
8 units
Property type
Multi-Family Residential
Zoning
RH3
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
Units8
Floors3
Year built1928
Total area5,625 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0935006B
Ownership

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

Owner name
H Louis Detjen Jr Living Tr
Mailing address
Heidi Detjen Trustee 25 Midway Ave Mill Valley CA 94941
Last sale
030921

Landlord portfolio

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

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Augrented Insights
Initial analysis

The 8-unit multi-family residential building at 3130 Broderick Street, located in San Francisco's Marina neighborhood, is a 3-story structure built in 1928, currently owned by the H Louis Detjen Jr Living Trust. The building has undergone several significant improvements in recent years, most notably the addition of an accessory dwelling unit (ADU) in 2017-2020, which included comprehensive renovations of the first floor with new kitchen, bathroom, and living spaces, along with the installation of new fire sprinklers ($140,000). The property completed its mandatory soft-story retrofit in 2017-2020, addressing seismic safety requirements, and has maintained active fire safety upgrades including a new fire alarm system in 2021 ($13,000). Recent maintenance includes a complete reroofing project in 2023 ($21,820). While there were several building complaints filed in 2019 regarding heating issues, hot water disruptions, and soft-story compliance, these were all resolved by 2020. The property has a history of infrastructure maintenance dating back to the 1980s, including various plumbing and structural upgrades, with the most recent plumbing work focusing on boiler replacement in 2020.

Recent 311 calls primarily relate to parking enforcement and street cleaning issues outside the building, which are not directly related to the building's habitability or maintenance. Two planning records indicate previous enforcement actions regarding illegal short-term rentals, though these have been marked as abated. The building's housing and fire safety records show regular inspections and compliance with safety requirements, including the installation of fire sprinklers and a new fire alarm system, demonstrating ongoing commitment to resident safety. The soft-story retrofit status is marked as complete with a Certificate of Final Completion (CFC) issued.

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

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Risk rating

How 3130 Broderick 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
20th percentile

Out of 988 buildings in this neighborhood, 790 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
50%
No DBI
violation
50%
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 40.8%
Moderate concern 34.4%
Severe concern 24.8%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
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The story over time

3130 Broderick St event timeline

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

2025
311 Request Dec 19
Garbage and debris
human waste or urine
311 RequestDec 19
Garbage and debris

See all 19 events

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

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Every record we have

Full data for 3130 Broderick 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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