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Building and Landlord Data Analysis Report

4520-4522 California St, San Francisco, CA 94118

0
Complaints
0
Fire Incidents
4
311 Calls
0
Permits

Risk Assessment

69
Low Risk

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

Our AI predicts there is a 69% chance of no major maintenance issues.
Augrented Insights Report

The two-unit residential building at 4520-4522 California St, owned by Calvin L K Pon, has undergone several significant improvements since its 1921 construction. Most notably, in December 2023-January 2024, all eight front-facing windows were replaced with aluminum clad sliders, following previous window upgrades between 2017-2024 including both visible and non-visible windows.

The building has seen notable interior improvements, including a bathroom renovation in 2017 converting a tub to a shower on the top level, though this project required subsequent revisions to address vent installation issues. The property's maintenance history shows regular upkeep, including a significant facade repair in 2008 costing $20,000.

While there have been multiple fire department responses, these were primarily for non-injury incidents such as false alarms, a cooking fire contained to a container, and electrical equipment issues. The building's exterior area has experienced periodic cleaning challenges, with several reports of waste on public property between 2019-2021, and multiple cases of graffiti on nearby poles reported between 2009-2011. A street space permit was obtained and renewed in 2017, indicating some form of temporary use of public space adjacent to the property.

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.

4520-4522 California St Report Contents

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Building Overview

Renter Risk Rating

This building is in the riskiest 10% of buildings in Lake Street.

Building Characteristics

Total units 2
Year built 1921
Total area 2630 sq ft
Floors 2
Tax Abatements Home Owners
Building Class F - Flats & Duplex
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Key Building Statistics

0
Building Complaints
Number of complaints filed with the Department of Building Inspection in the last 7 years.
0
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.
4
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

  • 4522 California St, San Francisco CA 94118
  • 4520 California St, San Francisco CA 94118

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4520-4522 California St Landlord Information

Ownership Data

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

NameAddress
Pon Calvin L K4520 California St San Francisco CA 94118

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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4520-4522 California 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 4520-4522 California St

311 Housing Complaints

The table below shows the 311 housing complaints received regarding the conditions at 4520-4522 California St, as well as requests for service nearby.

OpenedCategoryResponsible AgencyRequest TypeRequest DetailsStatus
2025-07-27 10:23:47+00:00 Street and Sidewalk Cleaning Recology - Abandonedgarbage_and_debrisfurniture Closed
2021-10-08 11:09:00+00:00 Street and Sidewalk Cleaning DPW Ops QueueGeneral CleaningOther Loose Garbage Closed
2020-06-06 06:56:11+00:00 Street and Sidewalk Cleaning DPW Ops QueueHuman or Animal WasteHuman or Animal Waste Closed
2019-08-05 16:45:00+00:00 Street and Sidewalk Cleaning DPW Ops QueueHuman or Animal WasteHuman or Animal Waste Closed
2019-02-24 17:35:00+00:00 Parking Enforcement Parking Enforcement Dispatch QueueOther_Illegal_ParkingSilver - Toyota Prius - 7LRT650 Closed
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DBI Complaints

Complaints received by the Department of Building Inspection.

Date FiledDate AbatedAssigned DivisionComplaint DescriptionStatusLink
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DBI Violations

Building code violations records.

Date FiledDate AbatedItemViolation DescriptionStatus
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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
2025-06-23 00:00:00+00:00744 Detector activation, no fire - unintentionalNone0
2024-09-06 00:00:00+00:00440 Electrical wiring/equipment problem, otherNone0
2023-09-27 00:00:00+00:00113 Cooking fire, confined to containerNone0
2021-11-08 00:00:00+00:00700 False alarm or false call, otherNone0
2021-11-07 00:00:00+00:00700 False alarm or false call, otherNone0
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Building Permits

Permit records for 4520-4522 California 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 4520-4522 California St Compares

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