18 THOMAS ST was designated as a heritage property. The property was described as this large double georgian house has a simple symmetrical layout and elegant detailing. Holly Koponen Consulting Inc. was federally incorporated in 2025, at 18 Thomas St directed by HOLLY KOPONEN. A 311 request about trees & woodlands (forestry) was created in 2020. A residential - alteration/repair or alteration/finish to an existing building permit was filed in 2025 interior alteration on main floor of a house to add two windows in living room and an additional window on second floor bedroom facing front street in a heritage building, house, no interior room layout changes are proposed, all other existing floors to remain as existing, for a value of $30,000. An excavation permit was issue in 2023 region of halton, emergency road cut, waste wate, initiated by Halton Region. 18 Thomas Street locates in Oakville.
| Full Address | 18 Thomas Street, Oakville, ON |
| Street Number | 18 |
| Street Name | THOMAS Street |
| Street Type | Street |
| Street Number Range | From 18 To 139 (Totally 33) |
| Locality | Oakville |
| Administrative Area | Halton Regional Municipality Ontario |