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Building and Landlord Data Analysis Report

3807-3809 18th St, San Francisco, CA 94114

10
Complaints
1
Fire Incidents
54
311 Calls
0
Permits

Risk Assessment

26
High Risk

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

Our AI predicts there is a 26% chance of no major maintenance issues.
Augrented Insights Report

Located in the Eureka Valley/Dolores Heights neighborhood, this 2-story multi-family residential building was constructed in 1926 and contains three units, with a commercial space on the ground floor. The property has undergone several significant modifications over the years, including a 2013 conversion of ground floor retail space to a limited restaurant with accessible improvements costing $24,000, and a 2017 re-roofing project valued at $11,000.

More recently, in 2024, there were plumbing improvements including the installation of a sink and toilet, and the building underwent sewer and house trap replacement work in 2022. The property has experienced multiple maintenance and safety issues that have required attention over the years, with the most concerning being active complaints from 2018 related to building safety, including issues with handrails, steps, appliances, and lighting that remain unresolved. There have been several instances of unauthorized work, including multiple complaints in 2019-2024 regarding unpermitted heater installations and other modifications.

The building has a documented history of plumbing issues, including sewer blockages in 2016 and multiple plumbing violations in 2017-2018. Recent activity in 2023-2024 has shown ongoing maintenance needs, with multiple reports of graffiti, health-related inspections, and various public health concerns. The property's inspection history suggests a pattern of both routine maintenance and more serious safety issues that require ongoing monitoring.

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 3
Year built 1926
Total area 0 sq ft
Floors 2
Tax Abatements Home Owners
Building Class FS - Flat & Store 4 units or less
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Key Building Statistics

10
Building Complaints
Number of complaints filed with the Department of Building Inspection in the last 7 years.
13
Code Violations
Building code violations issued by DBI in the last 7 years.
1
Fire Incidents
Total number of fire incidents reported at this building.
1
DBI Director Hearings
Number of Director's Hearings held by DBI in the last 7 years.
54
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

  • 3807 18th St, San Francisco CA 94114
  • 3809 18th St, San Francisco CA 94114

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Reviews of 3807-3809 18th St

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3807-3809 18th St Landlord Information

Ownership Data

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

NameAddress
Louie Koon Koon Rev TrustKoon Koon Louie 3807 18Th 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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3807-3809 18th 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 3807-3809 18th St

311 Housing Complaints

The table below shows the 311 housing complaints received regarding the conditions at 3807-3809 18th St, as well as requests for service nearby.

OpenedCategoryResponsible AgencyRequest TypeRequest DetailsStatus
2025-07-21 16:16:47+00:00 MTA Parking Traffic Signs Normal Priority MTA - Sign Shopother_parking_typedefaced ok Closed
2025-05-13 10:32:18+00:00 General Request MTA - Parking Enforcementmunicipal_transportation_agencyparking_enforcement complaint Open
2025-04-21 08:25:45+00:00 Street and Sidewalk Cleaning PW - Street and Environmental Servicesgarbage_and_debrisother_loose_garbage_debris_yard_waste Closed
2025-04-07 18:40:01+00:00 Sewer PUC - Sewer Opssewage_back-up_dischargefrom_side_sewer_vent Closed
2025-04-06 07:52:20+00:00 Sewer PUC - Sewer Opssewage_back-up_dischargefrom_side_sewer_vent Closed
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DBI Complaints

Complaints received by the Department of Building Inspection.

Date FiledDate AbatedAssigned DivisionComplaint DescriptionStatusLink
2024-01-17 00:00:00+00:00NonePlumbing Inspection DivisionWork without permit Not Active View on DBI
2019-12-27 00:00:00+00:00NoneHousing Inspection ServicesInstall heater without permit by tenant. Not Active View on DBI
2019-11-13 00:00:00+00:00NonePlumbing Inspection DivisionHeater installed without a permit Not Active View on DBI
2019-08-07 00:00:00+00:002019-08-09 00:00:00+00:00Plumbing Inspection DivisionDate last observed: 06-aug-19; time last observed: today; identity of person performing the work: commercial tenant; floor: ground; unit: commercial; exact location: main bldg; building type: residence/dwelling work w/o permit; electrical work previously installed w/o permit; other plumbing; ; additional information: commercial space installed heater without permit. may be hazzardous.; Not Active View on DBI
2019-06-05 00:00:00+00:002019-06-18 00:00:00+00:00Plumbing Inspection DivisionIllegal installation of heater in the hallway (about 5 years ago). not code-compliant. fire hazard. 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
2019-12-14 00:00:00+00:00600 Good intent call, otherNone0
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Building Permits

Permit records for 3807-3809 18th 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 3807-3809 18th St Compares

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