Building and Landlord Data Analysis Report

455 28th Ave, San Francisco, CA 94121

Complaints

Fire Incidents

311 Calls

Permits

Risk Assessment

Moderate Risk

This building shows some maintenance concerns that warrant attention.

Our AI predicts there is a 62% chance of no major maintenance issues.

Augrented Insights Report

The two-unit residential building at 455 28th Avenue, located in San Francisco's Central Richmond neighborhood, is a two-story flats and duplex structure built in 1919 and owned by Gigi Z Chen. Over the past few years, the property has experienced recurring issues with driveway blocking, with seven documented incidents between 2020 and 2025, including three instances in 2024 alone.

Most recently, a citation was issued in January 2025 for blocked driveway access. There have also been two significant sewer-related incidents: one in July 2022 involving flooding that was investigated by both DPW and PUC Sewer Operations, and another in September 2023 where odor issues were reported but no harmful substances were detected.

The building's only documented permit activity was in 2018 for street space use, though this involved only a nominal cost of $1. The property has a known tenant buyout history, with two tenants receiving $21,000 in compensation in October 2017, though this occurred at the adjacent address of 457 28th Avenue.

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.

455 28th Ave Report Contents

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Building Overview

Renter Risk Rating

This building is in the riskiest 10% of buildings in Central Richmond.

62% chance of no major maintenance issues.

Building Characteristics

Total units	2
Year built	1919
Total area	2600 sq ft
Floors	2
Tax Abatements	None
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.

Map and Aerial View of 455 28th Ave

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Reviews of 455 28th Ave

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455 28th Ave Landlord Information

Ownership Data

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

Name	Address
Chen Gigi Z	455 28th Ave San Francisco CA 94121

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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455 28th Ave 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 455 28th Ave

311 Housing Complaints

The table below shows the 311 housing complaints received regarding the conditions at 455 28th Ave, as well as requests for service nearby.

Opened	Category	Responsible Agency	Request Type	Request Details	Status
2025-05-20 19:10:02+00:00	Parking Enforcement	MTA - Parking Enforcement Dispatch	blocking_driveway_cite_only	None	Closed
2025-05-18 16:34:14+00:00	Parking Enforcement	MTA - Parking Enforcement Dispatch	blocking_driveway_cite_only	None	Closed
2025-02-27 11:39:45+00:00	Sewer	PUC - Sewer Ops	sewage_back-up_discharge	from_side_sewer_vent	Closed
2025-02-21 14:20:35+00:00	Parking Enforcement	MTA - Parking Enforcement Dispatch	blocking_driveway_cite_only	None	Closed
2025-01-14 19:12:43+00:00	Parking Enforcement	MTA - Parking Enforcement Dispatch	blocking_driveway_cite_only	None	Closed

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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 455 28th Ave.

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
1460001J	457 28th Avenue	2017-10-10 00:00:00+00:00	21000.0	2

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How 455 28th Ave Compares

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455 28th Ave, San Francisco, CA 94121

Risk Assessment

455 28th Ave Report Contents

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Building Overview

Renter Risk Rating

Building Characteristics

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Key Building Statistics

Map and Aerial View of 455 28th Ave

Street Map View

Satellite View

Reviews of 455 28th Ave

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455 28th Ave Landlord Information

Contact Details

Ownership Data

Property Portfolio

Landlord Portfolio

Court Cases

Landlord Court Records

455 28th Ave Rent Control Status

Year Built

Units

Rent Board Registration

Additional Info

Full Building Data for 455 28th Ave

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 455 28th Ave Compares

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