Basement Finishing in Markham
An unfinished basement is the largest unused room in most Markham homes. Finishing it adds a bedroom, an office, a playroom or a family space — without changing your home’s footprint and at a fraction of the cost of an addition.
SM Builders finishes basements across Markham, from Unionville and Thornhill to Cornell and Milliken. We take the space from bare concrete to painted, floored and move-in ready, including insulation, electrical, lighting and finishes.
Our Basement Finishing Services in Markham
A finished basement can become almost anything. The most popular uses in Markham are:
- Family rooms and recreation rooms
- Home offices and homework areas
- Guest bedrooms and in-law space
- Home gyms and playrooms
- Home theatres and wet bars
- Laundry rooms and extra storage
Finishing a Basement in Markham: The Steps That Matter
Finishing is not just drywall. The order matters: first we check moisture and fix any drainage or sealing issues, then we insulate properly for Markham winters, frame and run electrical, and only then close up the walls. Skipping the first steps is how finished basements end up with mould or cold floors.
Ceiling height and lighting make or break a finished basement. We use recessed LED lighting, light paint colours and, where possible, larger egress windows to keep the space bright. In Markham’s larger detached homes, the basement is often big enough to split into two or three zones — for example, a family room plus a bedroom plus storage — which we plan with you before framing begins.
Our Finishing Process
How Much Does Basement Finishing Cost in Markham?
Typical ranges: a basic finish (open space, flooring, lighting) $30,000 to $50,000; a full finish with bedroom and bathroom $50,000 to $80,000. Adding a bathroom or kitchenette increases cost but also increases usable value. Our basement finishing cost guide explains cost per square foot and every cost factor. Your exact price comes from a free estimate.
Why Homeowners in Markham Choose SM Builders
We finish basements that stay dry, warm and comfortable — because we fix moisture and insulation before the pretty work. See our basement renovation service for the full service, and our basement renovation cost guide for pricing detail.
Frequently Asked Questions
Typically $30,000 to $80,000 depending on size and whether you add a bathroom. Cost per square foot and a full breakdown are in our finishing cost guide; your exact price comes from a free estimate.
Most projects take 6 to 10 weeks. Adding a bathroom or custom features can extend it slightly.
A dry, well-finished basement adds usable living space that buyers value, especially with a bedroom or bathroom. It does not replace above-grade space dollar for dollar, but it is one of the best value renovations in Markham.
Finishing with electrical, plumbing or structural changes requires a permit. We advise you and handle the application if one is needed.
Turn your unfinished basement into living space. Call +1 647-331-7366 or request a free estimate and we will inspect your basement and give you a written quote.