Basement Finishing Cost in Markham (2026)
Across the GTA, basement finishing is estimated at about $55 – $80 / sq ft.
Typical size At 800 sq ft: about $44,000 – $64,000
Estimated ranges from local Greater Toronto Area prices — not a quote. Price library updated 2026-10-02.
Prices by item
| Item | Range | Source |
|---|---|---|
| Basement FinishingMarket reference | $55 – $80 / sq ft | Market reference |
| Basement FramingMarket reference | $15 – $30 / linear ft | Market reference |
| Basement WaterproofingMarket reference | $50 – $300 / linear ft | Market reference |
| Separate basement entranceMarket reference | $8,000 – $25,000 / project | Market reference |
| Sump pump installationMarket reference | $1,200 – $2,500 / installation | Market reference |
What changes the price
- Adding a bathroom or kitchen
- Any water issues — waterproofing first
- A separate entrance
- Ceiling and flooring materials
Businesses for basement finishing in Markham See all ›
Recent basement finishing projects in the GTA
FAQ
Is basement finishing cheaper in Markham?
The ranges here come from BBhome's price library for the whole Greater Toronto Area — they are not split by city. Actual prices depend on the site, materials and the business, so ask two or three for an itemized quote.
What does the price include?
The per-sq-ft range usually covers framing, insulation, drywall, flooring, lighting and finishing. Bathrooms, a separate entrance and waterproofing are usually extra.
How do I get an accurate quote?
Describe your project in one sentence for a quick estimate of your own job. Then post it once — local businesses that do this work can quote you on the platform, itemized. Your phone number stays private.
Is this a quote?
No. It is an estimated range for budgeting. The final price comes from a business after they see the site.
Your phone number is never public. Businesses can only quote you on the platform first — only the one you choose can see your number.
Free one-sentence estimate