Jane’s Basement Conversion

This basement renovation case study involves creating a distinct living unit by separating the existing stairwell and side entrance from the main floor unit. Existing windows are retained, with the addition of window wells for emergency exiting from bedrooms. The project introduces a new kitchen and non-load-bearing partition walls to create bedrooms. Plumbing is optimized by retaining existing infrastructure, making only the necessary additions.

Design Specifications

# of Units: 1

Unit 1 – Existing House
4 Bed / 2 Bath
117.9 sqm (+ 117.1 sqm Basement)

# of Units: 2

Unit 1 – Ground Floor
3 Bed / 1 Bath
112.4 sqm

Unit 2 – Basement
3 Bed / 1 Bath
115.0 sqm

Cost Considerations

*This sample design might cost somewhere in the range of $303,000 - $392,000

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:

Underpinning
Unit access
Fire and sounds separation
Adding plumbing (trenching new lines is expensive!)