Building and Landlord Data Analysis Report

1623-1625 20th Ave, San Francisco, CA 94122

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 37% chance of no major maintenance issues.

Augrented Insights Report

The two-unit, two-story multi-family residential building at 1623-1625 20th Avenue in the Central Sunset neighborhood, owned by the Tang Family Trust, was constructed in 1945 and has undergone several significant maintenance and infrastructure updates over the years. The property has received consistent roofing maintenance, with major re-roofing work performed in 2015 (at a cost of $11,400) and 2004 (at a cost of $3,900), as well as an electrical upgrade in 2002 that included a 200-amp, 120/240 three-meter service installation.

Recent records show a concerning trend in parking violations near the property, particularly during 2024, with multiple reports of illegal parking, including vehicles blocking sidewalks and driveways. Between April and August 2024, there were at least ten documented parking enforcement incidents, with some resulting in citations.

The building has experienced two fire-related complaints in recent years: one in 2023 reporting blocked exits (which was determined to have no merit) and another in 2017 regarding electrical systems that was promptly corrected. The property has maintained regular street cleaning and waste management services, with one documented case of loose garbage in 2022 that was resolved by Recology.

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.

1623-1625 20th Ave Report Contents

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Building Overview

Renter Risk Rating

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

37% chance of no major maintenance issues.

Building Characteristics

Total units	2
Year built	1945
Total area	2250 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.

Included Addresses

1623 20th Ave, San Francisco CA 94122
1625 20th Ave, San Francisco CA 94122

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1623-1625 20th Ave Landlord Information

Ownership Data

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

Name	Address
Tang Family Trust	Tang Kit Yee Surviving Trus 635 21St 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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1623-1625 20th 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 1623-1625 20th Ave

311 Housing Complaints

The table below shows the 311 housing complaints received regarding the conditions at 1623-1625 20th Ave, as well as requests for service nearby.

Opened	Category	Responsible Agency	Request Type	Request Details	Status
2025-07-15 08:25:26+00:00	Street and Sidewalk Cleaning	PW - Street and Environmental Services	garbage_and_debris	other_loose_garbage_debris_yard_waste	Closed
2025-06-07 20:16:06+00:00	Street and Sidewalk Cleaning	Recology - Abandoned	garbage_and_debris	furniture	Closed
2024-12-06 19:53:52+00:00	Parking Enforcement	MTA - Parking Enforcement Dispatch	blocking_driveway_cite_tow	None	Closed
2024-10-22 15:13:05+00:00	Parking Enforcement	MTA - Abandoned Vehicles Work	abandoned_vehicle	None	Closed
2024-07-29 18:42:20+00:00	Parking Enforcement	MTA - Parking Enforcement Dispatch	other_illegal_parking	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 1623-1625 20th 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

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How 1623-1625 20th Ave Compares

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1623-1625 20th Ave, San Francisco, CA 94122

Risk Assessment

1623-1625 20th Ave 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 1623-1625 20th Ave

Street Map View

Satellite View

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Reviews of 1623-1625 20th Ave

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1623-1625 20th Ave Landlord Information

Contact Details

Ownership Data

Property Portfolio

Landlord Portfolio

Court Cases

Landlord Court Records

1623-1625 20th Ave Rent Control Status

Year Built

Units

Rent Board Registration

Additional Info

Full Building Data for 1623-1625 20th 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 1623-1625 20th Ave Compares

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