You need to enable JavaScript to use this site.602 Mason St, San Francisco Report | Augrented SF Apartment Ratings & Reviews
Building and Landlord Data Analysis Report

602 Mason St, San Francisco, CA 94108

4
Complaints
3
Fire Incidents
389
311 Calls
4
Permits

Risk Assessment

17
High Risk

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

Our AI predicts there is a 17% chance of no major maintenance issues.
Augrented Insights Report

The 22-unit, 5-story apartment building at 602 Mason Street, owned by Minhall Inc and built in 1919, has undergone several significant upgrades and faced various compliance issues in recent years. Most notably, there are multiple active building violations as of March 2024, including requirements to provide gas utility shutoff tools, maintain fire escape drop ladders, update fire alarm system compliance, and provide necessary compliance affidavits. The building has seen substantial safety system improvements, including a $36,000 fire alarm system upgrade in 2023 to comply with San Francisco Fire Department requirements, and a similar system modification in 2021.

Other major maintenance work includes a $60,000 reroofing project in 2022 and storefront marble repairs in 2019. The property has experienced several notable events regarding its commercial space, including an illegal change of use to general entertainment assembly in 2018, which was subsequently permitted through proper channels. There have been recurring concerns about expired permits and compliance issues, as evidenced by recent building complaints and violations.

The building's fire safety systems have required attention, with recent fire complaints in 2024 regarding extinguishers and alarm systems, though these issues were subsequently corrected. Fire incident records show no civilian injuries, with most incidents being false alarms, system activations, or other non-injury situations. The most recent activity in 2024 includes multiple 311 calls regarding street cleaning and maintenance issues around the property, though these are primarily external to the building itself.

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.

Share This Report

Download Full Report for 602 Mason St

Sign up to download the full building report in PDF or Excel format

Sign Up for Free

Building Overview

Renter Risk Rating

This building is in the riskiest 10% of buildings in Union Square.

Building Characteristics

Total units 22
Year built 1919
Total area 13499 sq ft
Floors 5
Tax Abatements None
Building Class A15 - Apartment 15 Units or more
Preview of building report data and features

Unlock Complete Building History

Get access to comprehensive violation records, court cases, landlord portfolios, and detailed maintenance history for this building and thousands of others.

Full violation history
Landlord portfolios
Court case records
PDF/Excel reports
Sign Up for Free Access
No credit card required • Instant access

Key Building Statistics

4
Building Complaints
Number of complaints filed with the Department of Building Inspection in the last 7 years.
7
Code Violations
Building code violations issued by DBI in the last 7 years.
3
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.
389
311 Calls
Number of 311 calls for this building.
0
Fire Injuries
Number of fire injuries reported by SFFD.
4
Building Permits
Number of building permits issued by DBI.

Included Addresses

  • 590 Sutter St, San Francisco CA 94108
  • 602 Mason St, San Francisco CA 94108

Map and Aerial View of 602 Mason St

Street Map View
Loading map...

Loading street map...

Satellite View
Loading satellite view...

Loading satellite view...

Reviews of 602 Mason St

See what current and past tenants have to say

No reviews yet

Be the first to share your experience living at this property. Your review helps future tenants make informed decisions.

Rate your experience Share honest feedback Help other tenants

Share Your Experience

Help future tenants by leaving an honest review of this property

Login Required

You must be logged in to leave a review. Join our community and share your experience!

Login to Continue
Don't have an account? Sign up here

602 Mason St Landlord Information

Ownership Data

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

NameAddress
Minhall IncBlatteis Realty-d Blatteis 44 Montgomery St Ste 1288 San Francisco CA 94104

Landlord Portfolio

We cross-reference landlords' property tax registrations to find the other buildings they own or manage.

AddressUnitsCode ViolationsRisk Rating
First five items shown. Sign up to see more.

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
First five items shown. Sign up to see more.

602 Mason 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 602 Mason St

311 Housing Complaints

The table below shows the 311 housing complaints received regarding the conditions at 602 Mason St, as well as requests for service nearby.

OpenedCategoryResponsible AgencyRequest TypeRequest DetailsStatus
2025-07-31 16:16:46+00:00 Graffiti Public PW - Street and Environmental Servicesnot_offensivepole Open
2025-07-30 18:46:02+00:00 Parking Enforcement MTA - Parking Enforcement Dispatchother_illegal_parkingNone Closed
2025-07-30 11:14:46+00:00 Litter Receptacle Maintenance Recology - Litterother_including_abandoned_toterNone Closed
2025-07-30 11:13:47+00:00 Street and Sidewalk Cleaning PW - Street and Environmental Servicesgarbage_and_debrishuman_waste_or_urine Closed
2025-07-30 11:13:47+00:00 Street Defect PW - Street and Sewer Repairpavement_defectNone Closed
First five items shown. Sign up to see more.

DBI Complaints

Complaints received by the Department of Building Inspection.

Date FiledDate AbatedAssigned DivisionComplaint DescriptionStatusLink
2024-03-18 00:00:00+00:00NoneHousing Inspection ServicesCommon areas Active View on DBI
2024-02-26 00:00:00+00:00NoneBuilding Inspection DivisionDate last observed: 23-feb-24; exact location: main bldg; building type: commercial/business expired permits; ; additional information: 201909050779; Not Active View on DBI
2024-02-26 00:00:00+00:002024-03-28 00:00:00+00:00Building Inspection DivisionDate last observed: 23-feb-24; exact location: main bldg; building type: commercial/business expired permits; ; additional information: 201909050779; Not Active View on DBI
2023-01-13 00:00:00+00:002023-05-09 00:00:00+00:00Code Enforcement SectionDate last observed: 12-jan-23; exact location: main bldg; building type: commercial/business vacant structure; ; additional information: vacant office on ground floor; Not Active View on DBI
2018-07-05 00:00:00+00:002018-10-23 00:00:00+00:00Building Inspection DivisionDate last observed: 04-jul-18; time last observed: 12:00 pm; floor: 1; exact location: main bldg; building type: commercial/business illegal change of use; disabled acc: entrance; disabled acc: path of travel; disabled acc: doors; ; additional information: change of use from dress shop to meeting space. handicap access ; Not Active View on DBI
First five items shown. Sign up to see more.

DBI Violations

Building code violations records.

Date FiledDate AbatedItemViolation DescriptionStatus
2024-03-18T00:00:00.000Z provide for compliance affidavit (sfhc 420.4, 907.211 and 340.1.6.1 ) complete the 420 affidavit provided for self certification for smoke detectors and carbon monoxide alarms. provide to inspector at the time of reinspection, send to inspector yee at 49 south van ness avenue, san francisco, ca 94103, fax to (628) 652-3709 or email the forms to dennis.yee@sfgov.org. building sectionactive
2024-03-18T00:00:00.000Z provide for compliance affidavit (sfhc 604 ) complete the 604 affidavit provided for certification for structural maintenance by a licensed contractor/engineer. provide to inspector at the time of reinspection, send to inspector yee at 49 south van ness avenue, san francisco, ca 94103, fax to (628) 652-3709 or email the forms to dennis.yee@sfgov.org. building sectionactive
2024-03-18T00:00:00.000Z this notice includes violations for the areas noted. inspector yee performed a routine safety inspection of public and common areas. chapters 1, 2, & 3 of the san francisco housing code require that the department of building inspection perform periodic health & safety inspections of residential property. this routine inspection was conducted to assure that all requirements have been met per attached routine inspection checklist. please email all photos and documents if you cannot meet in person. 602 mason building sectionactive
2024-03-18T00:00:00.000Z provide shutoff tool for gas utility shutoff (712 hc) post enclosed gas meter instructional diagram in a public area. (712 hc) located at gas meter of the property. building sectionactive
2024-03-18T00:00:00.000Z maintain fire escape drop ladder in working condition (sec 908 hc) on reinspection day, property manager, owner or the owner's agent needs to demonstrate the workability of the fire escape ladders. or provide a written and signed report from a qualified service company or contractor stating that all parts and cables have been tested and are functional or you are required to lower the ladder on re-inspection day to verify its proper full release. all fire escape drop ladders must be maintained and serviced annually, particularly the cable and all moving parts. lubricate and drop the ladder at least once a year. building sectionactive
First five items shown. Sign up to see more.

Fire Violations

Fire code violations recorded by the San Francisco Fire Department.

Violation DateDisposition DateAddressViolation DescriptionStatus
First five items shown. Sign up to see more.

Fire Incidents

Historical fire incident records for the property.

Incident DatePrimary SituationIgnition CauseCivilian Injuries
2024-05-23 00:00:00+00:00550 Public service assistance, otherNone0
First five items shown. Sign up to see more.

Building Permits

Permit records for 602 Mason St.

Permit Creation DateEstimated CostDescriptionStatusPermit Number
First five items shown. Sign up to see more.

Electrical Permits

Electrical system permits for the building.

Application DateDescriptionStatusPermit Number
First five items shown. Sign up to see more.

Plumbing Permits

Plumbing system permits for the building.

Application DateDescriptionStatusPermit Number
First five items shown. Sign up to see more.

Planning Records

Planning records for the property.

DateProject AddressDescriptionApplicant
First five items shown. Sign up to see more.

Tenant Buyouts

Tenant buyout records for the property.

BlocklotAddressAgreement DateAmountTenants
First five items shown. Sign up to see more.

How 602 Mason St Compares

Loading...

Loading comparison data...

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

0

Comparable Buildings

0

Better Rated

0

Worse Rated

Comparison with Similar Buildings
Hover over metrics for details
BuildingYear BuiltUnits Violations Complaints Fire Incidents Risk Rating
Loading...---000-
This BuildingBetterWorse
Upgrade to view more metrics

Get access to all building comparison metrics and insights with a premium account.

Upgrade Now

Unlock Complete Building History

Get access to comprehensive violation records, court cases, landlord portfolios, and detailed maintenance history for this building and thousands of others.

Full violation history
Landlord portfolios
Court case records
PDF/Excel reports
Sign Up for Free Access
No credit card required • Instant access
Preview of building report data and features

Nearby Buildings