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Building and Landlord Data Analysis Report

3646 20th St, San Francisco, CA 94110

1
Complaints
0
Fire Incidents
36
311 Calls
2
Permits

Risk Assessment

32
High Risk

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

Our AI predicts there is a 32% chance of no major maintenance issues.
Augrented Insights Report

The property at 3646 20th Street in Mission Dolores is a 2-unit, 2-story multi-family residential building constructed in 1907, currently owned by Raymond D. Trew. The building has undergone several significant improvements over the past decade, including two separate roofing projects in December 2020 (costing between $14,000-$14,500), and a substantial kitchen and bathroom remodeling project in 2013 valued at $18,000, which included comprehensive plumbing and electrical work.

While the 2013 renovations initially sparked a complaint about unpermitted construction that resulted in violation monitoring fees, proper permits were subsequently obtained and the violation was resolved. The most notable recent issue involves an active complaint filed in August 2019 regarding concerns about a possible unpermitted third unit on the lower floor, which remains unresolved as of now. The building has experienced recurrent issues with graffiti in May 2024, with at least two incidents requiring abatement.

Additionally, there have been multiple parking enforcement calls in May 2024 regarding blocked driveways, though these typically could not be validated upon officer response. The property underwent sidewalk repairs in 2004 and street space work in 2010, and while there were neighborhood concerns about short-term rentals in 2021, an investigation found no violations. The building's maintenance history shows regular upkeep, though the active complaints and recent graffiti incidents suggest ongoing challenges with property maintenance and parking management in the immediate vicinity.

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.

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Building Overview

Renter Risk Rating

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

Building Characteristics

Total units 2
Year built 1907
Total area 2860 sq ft
Floors 2
Tax Abatements Home Owners
Building Class F - Flats & Duplex
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Key Building Statistics

1
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.
36
311 Calls
Number of 311 calls for this building.
0
Fire Injuries
Number of fire injuries reported by SFFD.
2
Building Permits
Number of building permits issued by DBI.

Map and Aerial View of 3646 20th St

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3646 20th St Landlord Information

Ownership Data

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

NameAddress
Trew Raymond D2501 Mission St San Francisco CA 94110

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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3646 20th 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 3646 20th St

311 Housing Complaints

The table below shows the 311 housing complaints received regarding the conditions at 3646 20th St, as well as requests for service nearby.

OpenedCategoryResponsible AgencyRequest TypeRequest DetailsStatus
2025-07-15 12:43:22+00:00 Tree Maintenance PW - Street and Environmental Servicesdamaging_propertyhitting_window_or_building Open
2025-04-12 14:39:07+00:00 Parking Enforcement MTA - Parking Enforcement Dispatchblocking_driveway_cite_towNone Closed
2025-04-11 20:25:30+00:00 Parking Enforcement MTA - Parking Enforcement Dispatchblocking_driveway_cite_onlyNone Closed
2025-04-06 16:43:44+00:00 Parking Enforcement MTA - Parking Enforcement Dispatchblocking_driveway_cite_onlyNone Closed
2024-06-01 10:58:00+00:00 Rec and Park Requests RPD Park Service Area 6 QueuePark - Structural_MaintenanceRecreation_Equipment Closed
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DBI Complaints

Complaints received by the Department of Building Inspection.

Date FiledDate AbatedAssigned DivisionComplaint DescriptionStatusLink
2019-08-08 00:00:00+00:00NoneHousing Inspection ServicesDate last observed: 07-aug-19; exact location: main bldg; building type: residence/dwelling other housing; ; additional information: neighborhood concern over 3rd unpermitted unit on lower floor; Active View on DBI
2013-11-18 00:00:00+00:00NoneBuilding Inspection DivisionRemodeling inside the apartment and cementing the backyard w/o permits. Not Active View on DBI
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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
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Building Permits

Permit records for 3646 20th 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 3646 20th St Compares

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Showing buildings that are: within 0.5 miles , of similar age (±15 years), of similar size (±50% units)

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