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Building and Landlord Data Analysis Report

4345-4347 20th St, San Francisco, CA 94114

1
Complaints
0
Fire Incidents
1
311 Calls
0
Permits

Risk Assessment

62
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 property at 4345-4347 20th Street is a four-story, three-unit multi-family residential building constructed in 1910, currently owned by Gercek Karakus and A Melis Ok. The building's maintenance history shows regular upkeep, with recent improvements including the installation of retrofit vinyl windows in 2024 and previous termite treatment completed in 2003. However, significant concerns have emerged regarding an unauthorized basement unit, as evidenced by a February 2024 complaint that documented numerous code violations, including improper ceiling height, unauthorized construction, and safety equipment deficiencies.

This basement unit allegedly features its own kitchen, bathroom, and sleeping area, despite the building's legal classification as an R-3 two-family dwelling. The property has experienced recurring maintenance issues, with an active complaint from 2014-2015 regarding broken light fixtures, weather-proofing problems, and other electrical concerns. A notable incident occurred in January 2016, when unauthorized structural work was reported, though this complaint is now inactive.

Historical improvements include a kitchen remodel in 1984, window replacements in 1991, and various plumbing and roofing work completed in the early 2000s. Recent exterior improvements include the replacement of three windows in 2024 with energy-efficient retrofit vinyl windows. The building has also undergone some infrastructure updates, including waterline replacement in 2007. The property has generated several service requests, including a sidewalk parking complaint in 2022 and two public works complaints in 2018, all of which were resolved.

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 Eureka Valley/Dolores Heights.

Building Characteristics

Total units 2
Year built 1910
Total area 3000 sq ft
Floors 3
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.
1
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

  • 4347 20th St, San Francisco CA 94114
  • 4345 20th St, San Francisco CA 94114

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4345-4347 20th St Landlord Information

Ownership Data

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

NameAddress
Karakus Gercek & A Melis Ok4347 20th St San Francisco CA 94114

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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4345-4347 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 4345-4347 20th St

311 Housing Complaints

The table below shows the 311 housing complaints received regarding the conditions at 4345-4347 20th St, as well as requests for service nearby.

OpenedCategoryResponsible AgencyRequest TypeRequest DetailsStatus
2022-03-10 21:08:00+00:00 Parking Enforcement Parking Enforcement Dispatch QueueParking_on_SidewalkGrey/Silver - Tesla - 8VIZ341 Closed
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DBI Complaints

Complaints received by the Department of Building Inspection.

Date FiledDate AbatedAssigned DivisionComplaint DescriptionStatusLink
2024-05-02 00:00:00+00:00NoneHousing Inspection ServicesDate last observed: 29-apr-24; time last observed: 10 am; floor: ground flo; unit: ground flo; exact location: main bldg; building type: residence/dwelling illegal unit; ; additional information: 4347a illegal unit - the illegal unit in the lower level has been rented out for rental income for years; Not Active View on DBI
2024-02-20 00:00:00+00:00NoneHousing Inspection Services4347a illegal unit; improper ceiling height 1.95 meters, bathroom ceiling height is 1.85 meters, rat infestation Active View on DBI
2016-01-13 00:00:00+00:00NoneBuilding Inspection DivisionDate last observed: 12-jan-16; time last observed: 830am; identity of person performing the work: foreman would not reveal ident; floor: 2nd and 3r; exact location: main bldg; building type: residence/dwelling work w/o permit; structural problems; ; additional information: major structural work is being down on building w/out permit issued. scaffolding is installed all around house. construction crew would not show job card. claiming that it is painting only but there is structural work being done in the house as well as demolition work as well as multiple contractors at the house. permit search shows no permit has been filed or issued.; Not Active View on DBI
2014-12-24 00:00:00+00:002015-02-04 00:00:00+00:00Housing Inspection ServicesMultiple broken lights in hallway & big closet at top of stairs. Active View on DBI
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DBI Violations

Building code violations records.

Date FiledDate AbatedItemViolation DescriptionStatus
2024-02-20T00:00:00.000Z No description entered Noneactive
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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 4345-4347 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
4345 20TH ST 94114Addition of 2 (N) Dwelling Units to (E) 2 Dwelling Unit building. At basement, excavate (E) slab and add (N) slab at lower elevation, convert non-habitable space to habitable as (N) Accessory Dwelling Unit (Unit# ADU1). At first floor, remove floor framing, excavate (E) slab and add (N) floor at lower elevation, convert non-habitable space to habitable, as (N) Density Unit (Unit# Den1). Modify front and side elevations, modify access stair and add (N) landscaping to encroach into PROW. Partially infill (E) light well at 1st floor, (N) heating equipment, (N) laundry in (E) Unit#4345 and Unit#4347.Barker, James
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Tenant Buyouts

Tenant buyout records for the property.

BlocklotAddressAgreement DateAmountTenants
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How 4345-4347 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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