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Design Catalogue / Renovation / Convert a Floor
Ideas for converting a finished space

Convert a Floor

This horizontal split case study involves creating distinct living units by subdividing the existing structure of the house in the horizontal axis, typically at each floor level. Interior walls are added to create the necessary rooms within each unit and demising walls are added between units to create necessary fire separations. The project introduces new kitchens and bathrooms for each unit. Major considerations include plumbing, fire separation, and unit access.

Design Specifications

# of Units: 1

Unit 1 – Ground Floor
3 Bed / 1.5 Bath
165.2 sqm (+ 63.4 sqm basement)

# of Units: 3

Unit 1 – Ground Floor
1 Bed / 1 Bath
51.6 sqm

Unit 2 – Second Floor
1 Bed / 1 Bath
58.4 sqm

Unit 3 – Third Floor
Studio / 1 Bath
41.8 sqm

Cost Considerations

*This sample design might cost somewhere in the range of $295,000 - $504,000

Whenever you are deciding what type of unit to add, it is important to understand what are the major cost considerations. For a basement unit these are:

  • Unit access
  • Unit egress
  • Fire and sounds separation
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