Wellington St | 05 Unit Conversion

Wellington St 05 Unit Conversion

St. Thomas

Property Type: Existing 2-Storey 4-Plex

Project Overview

This project involved the conversion of a vacant 4-unit building into a fully legal 5-unit residential building in St. Thomas. The building was nearly gutted to the studs before our involvement, offering both opportunity and complexity. Our design team was brought in mid-process after the investor parted ways with their original firm.

Scope & Strategy

We redesigned the stripped-down building shell to add a new basement bachelor unit while retaining essential service room functions, and reworked the remaining floor layouts into functional bachelor-style units.

  • Converted unused basement area into a new bachelor unit while retaining essential service room functions
  • Redesigned remaining ground and second floor layouts into functional bachelor-style units, maximizing rentability and privacy
  • Created new internal layouts tailored to the stripped-down condition of the building shell
  • Ensured each unit met OBC minimums for natural light, egress, room sizing, and fire separation

Challenges Solved

  • Navigated a grey area of the OBC: extensive interior demolition risked reclassifying the existing building under stricter Part 9 new-construction rules
  • Successfully argued and applied OBC Part 11 for existing buildings, saving the investor significant time and cost
  • Took over from a prior design firm and restored project momentum with a revised design strategy and compliant permit drawings

Investor Benefits

  • Added an entirely new unit without altering the building’s exterior or gross floor area
  • Enhanced future rent potential by designing flexible bachelor units with defined bedroom spaces
  • Avoided triggering site plan approval or change-of-use zoning complications
  • Preserved existing shell to control construction cost while increasing building value

Current Status

Permit approved. Construction completed.

Multi-Unit, Legal Suite, Fourplex, Bachelor Units