Building permit intelligence · St. Catharines, ON
31 Thompson Avenue has 7 municipal building permits on file. The latest recorded activity was a residential permit dated Jul 13, 2026. PropertyLabs also identified 10 mapped permits within 500 m of this address.
Alter Interior of Attached Garage to Create an Accessory Dwelling Unit (Three Units Total)
Alter Interior of Attached Garage to Create an Accessory Dwelling Unit (Three Units Total)
Alter Interior of Attached Garage to Create an Accessory Dwelling Unit (Three Units Total)
Alter Interior of Attached Garage to Create an Accessory Dwelling Unit (Three Units Total)
Alter Interior of Attached Garage to Create an Accessory Dwelling Unit (Three Units Total)
10 mapped permits within 500 m, shown on the intelligence map above.
This address has 7 permit records in PropertyLabs' public history. The city figures below provide context without changing the focus of this exact-address record.
City coverage counts address-linked rows and does not add overlapping canonical tables. Rolling windows are inclusive, use UTC boundaries, and end Jul 31, 2026.
PropertyLabs compiled this permit history from municipal public records for St. Catharines, ON. The latest recorded permit activity at 31 Thompson Avenue is dated Jul 13, 2026. Municipal records can be corrected or updated after publication.
See the contractors, applicants, permit holders, permit numbers, and project documents associated with 31 Thompson Avenue in the PropertyLabs platform, along with alerts when new permits are filed at this address.
Private side water service upgrade from 1/2' to 3/4'.
To construct an Acessory Dwelling Unit in the Basement.
Business & Personal Services · Jul 29, 2026