Building and Landlord Data Analysis Report

26-28 Castle St, San Francisco, CA 94133

Complaints

Fire Incidents

311 Calls

Permits

Risk Assessment

Low Risk

This building shows minimal signs of maintenance issues based on our analysis.

Our AI predicts there is a 70% chance of no major maintenance issues.

Augrented Insights Report

The two-unit residential building at 26-28 Castle Street in Telegraph Hill, owned by the David Sing Ngung Lum Trust, is a two-story flats and duplex structure built in 1907.

The building's documented permit history is minimal, with only one recorded permit dating back to 2011 for street space use, with an associated cost of $1.00. The only recorded 311 call regarding the property was made in August 2015, which was a general public works request that was investigated by the Department of Public Works' Bureau of Street Use and Mapping.

This inquiry was ultimately resolved with no conditions found that required further action. The limited number of permits and complaints on record over this extended period could suggest either careful management of the property or perhaps the limitations of available public records, though no recent issues or concerns have been documented through these channels.

Last updated: January 17, 2025

This report is created with AI and based on the most recent 10 data items in each category. Full reports with 50+ data points are available to subscribers.

26-28 Castle St Report Contents

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Building Overview

Renter Risk Rating

This building is in the riskiest 10% of buildings in Telegraph Hill.

70% chance of no major maintenance issues.

Building Characteristics

Total units	2
Year built	1907
Total area	1584 sq ft
Floors	2
Tax Abatements	Home Owners
Building Class	F - Flats & Duplex

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Key Building Statistics

Building Complaints

Number of complaints filed with the Department of Building Inspection in the last 7 years.

Code Violations

Building code violations issued by DBI in the last 7 years.

Fire Incidents

Total number of fire incidents reported at this building.

DBI Director Hearings

Number of Director's Hearings held by DBI in the last 7 years.

311 Calls

Number of 311 calls for this building.

Fire Injuries

Number of fire injuries reported by SFFD.

Building Permits

Number of building permits issued by DBI.

Included Addresses

26 Castle St, San Francisco CA 94133
28 Castle St, San Francisco CA 94133

Map and Aerial View of 26-28 Castle St

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Reviews of 26-28 Castle St

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26-28 Castle St Landlord Information

Ownership Data

Ownership data from the Secured Roll (property tax) provided by the SF Assessor-Recorder.

Name	Address
David Sing Ngung Lum Trust	David Sing Ngung Lum Truste 26 Castle St San Francisco CA 94133

Landlord Portfolio

We cross-reference landlords' property tax registrations to find the other buildings they own or manage.

Address	Units	Code Violations	Risk Rating

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Landlord Court Records

From CA Court Service & DocketAlarm. Note: name matching only, verify parties are actually the owners by reviewing the case files!

Date Filed	Case Title	Court	Link

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26-28 Castle St Rent Control Status

Year Built

Built before 1979

Units

More than 1 unit

Rent Board Registration

Not applicable

Additional Info

N/A

Year Built	Units	Rent Board Registration	Additional Info
Before 1979	>1 unit	N/A	N/A

Rent Controlled. Units should be rent controlled and subject to eviction protection under San Francisco's Rent Ordinance.

Full Building Data for 26-28 Castle St

311 Housing Complaints

The table below shows the 311 housing complaints received regarding the conditions at 26-28 Castle St, as well as requests for service nearby.

Opened	Category	Responsible Agency	Request Type	Request Details	Status

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DBI Complaints

Complaints received by the Department of Building Inspection.

Date Filed	Date Abated	Assigned Division	Complaint Description	Status	Link

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DBI Violations

Building code violations records.

Date Filed	Date Abated	Item	Violation Description	Status

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Fire Violations

Fire code violations recorded by the San Francisco Fire Department.

Violation Date	Disposition Date	Address	Violation Description	Status

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Fire Incidents

Historical fire incident records for the property.

Incident Date	Primary Situation	Ignition Cause	Civilian Injuries

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Building Permits

Permit records for 26-28 Castle St.

Permit Creation Date	Estimated Cost	Description	Status	Permit Number

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Electrical Permits

Electrical system permits for the building.

Application Date	Description	Status	Permit Number

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Plumbing Permits

Plumbing system permits for the building.

Application Date	Description	Status	Permit Number

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Planning Records

Planning records for the property.

Date	Project Address	Description	Applicant

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Tenant Buyouts

Tenant buyout records for the property.

Blocklot	Address	Agreement Date	Amount	Tenants

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How 26-28 Castle St Compares

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26-28 Castle St, San Francisco, CA 94133

Risk Assessment

26-28 Castle St Report Contents

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Building Overview

Renter Risk Rating

Building Characteristics

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Key Building Statistics

Included Addresses

Map and Aerial View of 26-28 Castle St

Street Map View

Satellite View

Reviews of 26-28 Castle St

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26-28 Castle St Landlord Information

Contact Details

Ownership Data

Property Portfolio

Landlord Portfolio

Court Cases

Landlord Court Records

26-28 Castle St Rent Control Status

Year Built

Units

Rent Board Registration

Additional Info

Full Building Data for 26-28 Castle St

Complaints

311 Housing Complaints

DBI Complaints

Building Code Violations

DBI Violations

Fire Records

Fire Violations

Fire Incidents

Permits

Building Permits

Electrical Permits

Plumbing Permits

Planning Records

Planning Records

Tenant Buyouts

Tenant Buyouts

How 26-28 Castle St Compares

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