Building and Landlord Data Analysis Report

147-149 Mason St, San Francisco, CA 94102

38
Complaints
0
Fire Incidents
504
311 Calls
0
Permits

Risk Assessment

5
High Risk

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

Our AI predicts there is a 5% chance of no major maintenance issues.
Augrented Insights Report

The 57-unit, 8-story multi-family residential building at 147-149 Mason Street, owned by Mason Street Housing Association, has experienced several significant maintenance and safety issues in recent years. Most notably, from July 2022 to February 2023, there were multiple violations related to boiler permit compliance, with five separate notices of violation (NOV) issued for various boiler units (serial numbers K20061492, K20061495, and 18261108660555). The building has also faced recurring fire safety concerns, with violations in 2023-2024 related to alarm systems, sleeping area requirements, and blocked exits.

Recent complaints filed in 2024 include two incidents regarding broken windows (July 2024), black water from taps (April 2024), and construction noise (March 2024). The building's accessibility features have also been a concern, with multiple complaints in late 2023 regarding broken ADA doors and intercom systems. The property's maintenance history shows ongoing infrastructure work, including a hot water boiler replacement in 2019, though more recent issues suggest some maintenance challenges.

Between 2011-2013, various improvements were made, including subway retail space build-outs and fire safety system upgrades. The building has undergone multiple plumbing and electrical system installations since its 2009 construction, including a complete sprinkler system, underground plumbing work, and extensive electrical system installations. Recent 311 calls from January 2025 indicate issues with garbage collection services outside the building, though these appear to be municipal service matters rather than building-specific issues. The clustering of recent complaints from late 2023 to early 2024 suggests some ongoing challenges with building maintenance and system reliability, particularly regarding safety systems and accessibility features.

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.

147-149 Mason St Report Contents

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Building Overview

Renter Risk Rating

This building is in the safest 20% of buildings in Union Square.

Building Characteristics

Total units 57
Year built 2009
Total area 36804 sq ft
Floors 8
Tax Abatements Welfare
Building Class A15 - Apartment 15 Units or more
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Key Building Statistics

38
Building Complaints
Number of complaints filed with the Department of Building Inspection in the last 7 years.
28
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.
504
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

  • 149 Mason St, San Francisco CA 94102
  • 147 Mason St, San Francisco CA 94102

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147-149 Mason St Landlord Information

Ownership Data

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

NameAddress
Mason Street Housing AssocJohn Stewart Co 333 Taylor St San Francisco CA 94102

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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147-149 Mason St Rent Control Status

Year Built
Built after 1979
Units
More than 1 unit
Rent Board Registration
Not applicable
Additional Info
N/A
Year BuiltUnitsRent Board RegistrationAdditional Info
After 1979 >1 unit N/A N/A

Full Building Data for 147-149 Mason St

311 Housing Complaints

The table below shows the 311 housing complaints received regarding the conditions at 147-149 Mason St, as well as requests for service nearby.

OpenedCategoryResponsible AgencyRequest TypeRequest DetailsStatus
2025-07-24 08:44:12+00:00 Sidewalk and Curb PW - Street Use and Mappingmissing_side_sewer_vent_coverNone Closed
2025-07-20 09:34:48+00:00 Street and Sidewalk Cleaning Recology - Overflowinggarbage_and_debriscity_garbage_can_overflowing Closed
2025-07-20 08:26:45+00:00 Street and Sidewalk Cleaning Recology - Abandonedgarbage_and_debrisother_bagged_boxed_contained_garbage Closed
2025-07-10 07:01:59+00:00 Street and Sidewalk Cleaning CBD - Tenderloingarbage_and_debrishuman_waste_or_urine Closed
2025-07-08 11:20:38+00:00 Street and Sidewalk Cleaning Recology - Abandonedgarbage_and_debrisfurniture Closed
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DBI Complaints

Complaints received by the Department of Building Inspection.

Date FiledDate AbatedAssigned DivisionComplaint DescriptionStatusLink
2024-07-16 00:00:00+00:00NoneHousing Inspection ServicesWindow is hanging for street side Not Active View on DBI
2024-07-15 00:00:00+00:002024-09-23 00:00:00+00:00Housing Inspection ServicesCaller reports that a very heavy glass panned window in their unit broke. the wind caught it and caller tried to roll it in but it wouldn't. caller noticed that the window hinge is broken, grabbed window and held on to it for 15 minutes. it appeared to hold so caller notified management at 2:30 am. the maintenance guy came and tied a rope around it to secure it until they can work on monday. however, caller's concerned it could still blow off in the wind Not Active View on DBI
2024-04-04 00:00:00+00:00NoneHousing Inspection ServicesCustomer called in to report that there is black water coming from his tap in the bathroom. the customer let us know that there has been work done on the building in the area. please follow up with the customer as soon as possible Not Active View on DBI
2024-03-01 00:00:00+00:002024-03-14 00:00:00+00:00Building Inspection DivisionLoud construction (311 sr 17951432)ground floor --- early morning on 3/01/24 630am i was woken up to power drills and jack hammering. (311 sr 17954173) Not Active View on DBI
2024-02-20 00:00:00+00:002024-05-06 00:00:00+00:00Housing Inspection ServicesDate last observed: 19-feb-24; time last observed: 8:12 am; floor: 2; unit: 203; exact location: main bldg; building type: residence/dwelling plumbing leak; insects/rodents; mold; leaky fixtures; ; additional information: odor off cat urine coming through the walls from #205, shower leaks floods the kitchen area and bathroom; Not Active View on DBI
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DBI Violations

Building code violations records.

Date FiledDate AbatedItemViolation DescriptionStatus
2024-07-15T00:00:00.000Z inspector comments it is the property owner's responsibility to be present or direct his/her representative to attend the re-inspection as scheduled on this notice of violation for the purpose of providing entry to the inspector of those areas not accessed during the initial inspection as specified, and/or to access to all areas cited within this notice. if the property owner cannot attend the scheduled re-inspection (as specified on this notice) it is his/her responsibility to secure a different inspection date and time with the inspector, and provide all tenants with notification as required by california civil code section 1954 (san francisco housing code section 303(b), if any dwellings, apartment units or guest rooms are to be accessed during the re-inspection. ***correction of violations cited in this notice may require building, plumbing and/or electrical permits. it is the responsibility of the owner to obtain (or have others obtain) any required permits before beginning work that requires permit(s). when applying for a permit, reference the complaint number from this notice of violation. you must have the proper permit signed-off and finalized before the housing insp. returns in order for this violation to be abated.*** other sectionnot active
2024-07-15T00:00:00.000Z repair sink faucet (1001(f) hc) repair/ replace loose faucet/ handle to proper working condition. location: bathroom ---------- plumbing and electrical sectionnot active
2024-07-15T00:00:00.000Z this notice includes violations for the areas noted. subject property located at 149 mason st. unit #308. building sectionnot active
2024-07-15T00:00:00.000Z thermostat (701(e) hc) verify thermostat and heat source in said unit is in working order. location: unit #308 ---------- plumbing and electrical sectionnot active
2024-07-15T00:00:00.000Z kitchen cabinetry (1001(b)(13) hc) replace missing cabinet door to working condition so it may fully operate. location: kitchen (adjacent to refrigerator) ---------- interior surfaces sectionnot active
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Fire Violations

Fire code violations recorded by the San Francisco Fire Department.

Violation DateDisposition DateAddressViolation DescriptionStatus
2024-05-04T00:00:00.000Z201 - 229 Ellis Stsleeping area requirements referred to hearing
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Fire Incidents

Historical fire incident records for the property.

Incident DatePrimary SituationIgnition CauseCivilian Injuries
2025-06-03 00:00:00+00:00711 Municipal alarm system, malicious false alarmNone0
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Building Permits

Permit records for 147-149 Mason 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 147-149 Mason St Compares

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