Finishing a basement is worth it for most Ontario homeowners. It returns about 70% of its cost in added resale value, and it is the lowest cost per square foot of any way to add living space, because the foundation, walls, and roof already exist. The catch is moisture and ceiling height: fix those first or the return drops.
The math
Cost, value added, and recoup
Basement finishing runs roughly $60 to $205 per square foot in Ontario depending on region and finish. A 1,000 square foot basement at a premium finish costs about $100,000 in Listowel and about $125,000 in the GTA. At a 70% recoup, that adds roughly $70,000 to $87,500 in resale value.
| Service area | standard | premium | luxury |
|---|---|---|---|
| Toronto & GTA | $75/ft² | $125/ft² | $205/ft² |
| Hamilton & Niagara | $70/ft² | $120/ft² | $195/ft² |
| Kitchener-Waterloo, Cambridge & Guelph | $70/ft² | $115/ft² | $185/ft² |
| Listowel & Perth County | $60/ft² | $100/ft² | $165/ft² |
| Other Southwestern Ontario | $65/ft² | $105/ft² | $175/ft² |
Rates match the figures behind our calculators.
When it is not worth it
Three things to fix first
- Water. Any history of seepage has to be solved before you frame. Finishing over a moisture problem destroys the work and the return.
- Ceiling height. Below about 7 feet, the space reads as a crawlspace to buyers and appraisers. Underpinning to gain height is expensive.
- Egress. A legal bedroom or secondary suite needs a code-compliant egress window. Skipping it caps the value you can claim.
Your basement
Run your own numbers
Enter your basement square footage and finish level for a cost range and the resale value finishing adds.
Open the basement finishing calculatorRelated
Keep reading
See how to increase your home price for where a basement ranks against other projects.