Free SF apartment background check

50-54 Castle St

Telegraph Hill, SF 94133 0114050 3 units · 3 fl · 1906

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 Telegraph Hill
At or below average
avg 1.2
0
FewerMore

This building has 0 novs (7y), at or below the Telegraph Hill average of 1.2.

Rent & eviction protection

Is 50-54 Castle 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 1906
2 or more units
3 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
Units3
Floors3
Year built1906
Total area3,252 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0114050
Ownership

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

Owner name
Jonathan Dreyer Revoc Tr
Mailing address
Thomas Dreyer Po Box 1986 Sausalito CA 94966
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.

52 Castle St, San Francisco, CA 94133
54 Castle St, San Francisco, CA 94133
50 Castle St, San Francisco, CA 94133
Augrented Insights
Initial analysis

The three-unit multi-family residential building at 50-54 Castle Street in Telegraph Hill, owned by the Jonathan Dreyer Revocable Trust, has a documented history dating back to its 1906 construction. The most recent significant maintenance work was completed in 2018 with the issuance of a $5,900 reroofing project. The building underwent routine housing inspections in 2001, 2005, and 2009, all of which were resolved and marked as not active. While no serious violations or safety concerns were noted in these inspections, they indicate regular oversight of the property.

The building has experienced some infrastructure challenges over the past decade, particularly with wastewater systems, as evidenced by two sewage backup incidents in October 2016 involving a 4-inch vent, both of which were resolved through the PUC Sewer Operations. A more recent incident occurred in October 2022 involving human or animal waste, though this was street-related rather than building-specific. The property's exterior areas have required attention based on 311 calls, including a general cleaning request in January 2014, which was resolved with the determination that the reported waste was not found. An older building permit from 1988 records work on kitchen cabinets, sheetrock, window sashes, and carpeting, though this permit is listed as expired and its completion status is unknown.

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

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Risk rating

How 50-54 Castle 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
54th percentile

Out of 684 buildings in this neighborhood, 315 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
87%
No DBI
violation
13%
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.

Building age

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

Estimated permit spend (past 7 years)

Dollar value of permits pulled at this address — large recent spend can signal deferred-maintenance catch-up.

Building permits, owner's portfolio

Permits pulled across all of this owner's buildings over 7 years.

12-Month severity forecast
No violation 74.1%
Moderate concern 15.7%
Severe concern 10.2%
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

50-54 Castle St event timeline

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

No dated public records on file yet.
Every record we have

Full data for 50-54 Castle 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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