Free SF apartment background check

28-30 Bonita St

Russian Hill, SF 94109 0550034 4 units · 2 fl · 1908

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 Russian Hill
At or below average
avg 1.9
0
FewerMore

This building has 0 novs (7y), at or below the Russian Hill average of 1.9.

Rent & eviction protection

Is 28-30 Bonita 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 1908
2 or more units
4 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
Units4
Floors2
Year built1908
Total area4,060 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0550034
Ownership

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

Owner name
H Louis Detjen Jr Living Tr
Mailing address
C/o George Goodwin Realty, 1901 Lawton St San Francisco CA 94122
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.

1427 Green St, San Francisco, CA 94109
1429 Green St, San Francisco, CA 94109
30 Bonita St, San Francisco, CA 94109
28 Bonita St, San Francisco, CA 94109
Augrented Insights
Initial analysis

The property at 28-30 Bonita Street is a two-story, four-unit multi-family residential building located in San Francisco's Russian Hill neighborhood, built in 1908 and currently owned by the H Louis Detjen Jr Living Trust. The building has undergone several significant maintenance and upgrade projects over the past two decades, including a complete reroofing in 2004 ($8,500), an electrical service upgrade in 2005-2006, and a furnace replacement with associated ductwork and electrical work in 2016 (totaling over $8,300). In 2011, important safety improvements were made to the rear building stairs, including the installation of new pickets with appropriate spacing and a concrete bottom step.

The property has experienced recurring issues with street-level garbage and debris, particularly in 2024, with multiple reports of abandoned furniture and other materials requiring municipal intervention. There were also some recent municipal service requests for garbage can repair and street cleaning in mid-2024. A historical fire safety complaint regarding hazardous materials was filed in October 2012, but was determined to have "No Merit." The building's recent maintenance record shows regular upkeep of essential systems, though the frequency of street cleaning interventions suggests ongoing challenges with waste management in the immediate vicinity.

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

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Risk rating

How 28-30 Bonita 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
60th percentile

Out of 1133 buildings in this neighborhood, 453 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
79%
No DBI
violation
21%
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.

Neighborhood (ZIP code)

The ZIP code captures local housing market and enforcement patterns that affect all buildings in the area.

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 53.4%
Moderate concern 18.5%
Severe concern 28.2%
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

28-30 Bonita St event timeline

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

2026
Building Permit Mar 23
Repair work on exterior staircase to be less than 50%, not visible from street.
$5,000 · Complete

See all 2 events

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

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Every record we have

Full data for 28-30 Bonita 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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