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Building and Landlord Data Analysis Report

40-42 Norton St, San Francisco, CA 94112

3
Complaints
0
Fire Incidents
33
311 Calls
0
Permits

Risk Assessment

29
High Risk

This building is in the riskiest 10% of buildings in Presidio Heights with significant maintenance issues.

Our AI predicts there is a 29% chance of no major maintenance issues.
Augrented Insights Report

The three-unit multi-family residential building at 40-42 Norton Street in Mission Terrace, owned by Yee Ken Han, is a two-story flats & duplex structure dating back to 1907. The property has experienced recurring maintenance and habitability issues, with the most recent tenant complaint in 2024 regarding bathroom plumbing problems, an inoperable refrigerator, and ongoing pest control needs.

In 2017, the building faced multiple violations including mold/mildew on interior surfaces, smoke detector issues, stairs and handrail repairs, and a cockroach infestation, all of which were abated by October 2017. The building has undergone several permitted improvements, including rear yard storage legalization attempts in 2017, rear stairway replacement for second exit access in 2000, and the addition of a bar sink in 2001.

More recent infrastructure concerns include several open requests for tree maintenance and sidewalk defects reported in 2023-2024, indicating possible ongoing property maintenance challenges. The building's history shows a pattern of both structural and maintenance issues that have required intervention from various city departments, including plumbing, housing inspection, and street services.

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.

40-42 Norton St Report Contents

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Building Overview

Renter Risk Rating

This building is in the riskiest 10% of buildings in Mission Terrace.

Building Characteristics

Total units 3
Year built 1907
Total area 3135 sq ft
Floors 2
Tax Abatements Home Owners
Building Class F - Flats & Duplex
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Key Building Statistics

3
Building Complaints
Number of complaints filed with the Department of Building Inspection in the last 7 years.
10
Code Violations
Building code violations issued by DBI in the last 7 years.
0
Fire Incidents
Total number of fire incidents reported at this building.
0
DBI Director Hearings
Number of Director's Hearings held by DBI in the last 7 years.
33
311 Calls
Number of 311 calls for this building.
0
Fire Injuries
Number of fire injuries reported by SFFD.
0
Building Permits
Number of building permits issued by DBI.

Included Addresses

  • 42 Norton St, San Francisco CA 94112
  • 40 Norton St, San Francisco CA 94112

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40-42 Norton St Landlord Information

Ownership Data

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

NameAddress
Yee Ken Han40 Norton St San Francisco CA 94112

Landlord Portfolio

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

AddressUnitsCode ViolationsRisk 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 FiledCase TitleCourtLink
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40-42 Norton St Rent Control Status

Year Built
Built before 1979
Units
More than 1 unit
Rent Board Registration
Not applicable
Additional Info
N/A
Year BuiltUnitsRent Board RegistrationAdditional Info
Before 1979 >1 unit N/A N/A

Full Building Data for 40-42 Norton St

311 Housing Complaints

The table below shows the 311 housing complaints received regarding the conditions at 40-42 Norton St, as well as requests for service nearby.

OpenedCategoryResponsible AgencyRequest TypeRequest DetailsStatus
2025-07-18 12:25:13+00:00 Tree Maintenance PW - Urban Forestrydamaging_propertyhitting_window_or_building Open
2025-06-07 11:25:47+00:00 Street and Sidewalk Cleaning Recology - Abandonedgarbage_and_debrisfurniture Closed
2025-06-07 11:25:45+00:00 Street and Sidewalk Cleaning PW - Street and Environmental Servicesgarbage_and_debrisother_loose_garbage_debris_yard_waste Closed
2025-03-13 19:23:30+00:00 Tree Maintenance PW - Urban Forestryovergrown_treeblocking_sidewalk Open
2024-12-24 11:42:52+00:00 Parking Enforcement MTA - Parking Enforcement Dispatchblocking_driveway_cite_onlyNone Closed
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DBI Complaints

Complaints received by the Department of Building Inspection.

Date FiledDate AbatedAssigned DivisionComplaint DescriptionStatusLink
2025-06-03 00:00:00+00:00NoneHousing Inspection ServicesNo heat Active View on DBI
2024-05-01 00:00:00+00:002024-08-23 00:00:00+00:00Housing Inspection ServicesHaving issue in the bathroom with the toilet not working and issue with her refrigerator also having roach issue. Not Active View on DBI
2017-08-16 00:00:00+00:002017-08-24 00:00:00+00:00Housing Inspection ServicesNo heat Not Active View on DBI
2017-08-16 00:00:00+00:002017-10-19 00:00:00+00:00Housing Inspection ServicesTenant said his landlord hasn't cleaned the bathroom and kitchen for years. it is filthy and unsanitized. tenant said he had requested lanlord to make regular cleaning but landlord has told tenants to do it on their own. Not Active View on DBI
2017-08-16 00:00:00+00:002017-10-19 00:00:00+00:00Housing Inspection ServicesRoutine inspection Not Active View on DBI
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DBI Violations

Building code violations records.

Date FiledDate AbatedItemViolation DescriptionStatus
2024-05-01T00:00:00.000Z repair damaged ceilings (1001b,h,o hc) the rear bathroom had a damaged ceiling. repair the ceiling using approved methods and materials. interior surfaces sectionnot active
2024-05-01T00:00:00.000Z inspector comments violations cited herein constitute a nuisance pursuant to sections 401 and 1001(d) of the san francisco housing code. it is the property owner¿s responsibility to be present or direct his/her representative to attend the reinspection as scheduled on this notice of violation for the purpose of providing entry to the inspector of those areas not accessed during the initial inspection as specified, and/or to provide access to all areas cited within this notice. if the property owner cannot attend the scheduled reinspection (as specified on this notice) it is his/her responsibility to secure a different inspection time/date with the inspector, and provide all tenants with notification as required by california civil code section 1954 (san francisco housing code section 303(b)), if any dwellings, apartment units or guest rooms are to be accessed during the reinspection. other sectionnot active
2024-05-01T00:00:00.000Z remove rubbish or trash (1306,1307 hc) at the time of inspection there was accumulated trash/rubbish in the rear yard. remove the trash/rubbish. sanitation sectionnot active
2024-05-01T00:00:00.000Z this notice includes violations for the areas noted. 42 n norton st. building sectionnot active
2024-05-01T00:00:00.000Z eliminate cockroach infestation (1001b, 1306 hc) there were cockroaches noted behind the stove. provide regular pest control by an industry professional. provide a maintenance schedule at reinspection. sanitation sectionnot active
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Fire Violations

Fire code violations recorded by the San Francisco Fire Department.

Violation DateDisposition DateAddressViolation DescriptionStatus
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Fire Incidents

Historical fire incident records for the property.

Incident DatePrimary SituationIgnition CauseCivilian Injuries
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Building Permits

Permit records for 40-42 Norton St.

Permit Creation DateEstimated CostDescriptionStatusPermit Number
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Electrical Permits

Electrical system permits for the building.

Application DateDescriptionStatusPermit Number
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Plumbing Permits

Plumbing system permits for the building.

Application DateDescriptionStatusPermit Number
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Planning Records

Planning records for the property.

DateProject AddressDescriptionApplicant
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Tenant Buyouts

Tenant buyout records for the property.

BlocklotAddressAgreement DateAmountTenants
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How 40-42 Norton St Compares

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