Basement Renovations in Mississauga
Luxury basement finishing for Mississauga homes. Free 3D design, an itemized price that locks before you sign, a lifetime workmanship warranty and a written finish date that pays you $200 for every late day.
Get a Free EstimateSee our projectsBasement renovation in Mississauga, street by street
The city's housing stock spans decades: 1970s to 80s homes in Meadowvale, Erin Mills and Clarkson often need moisture correction and ceiling solutions handled before the pretty work starts, while newer builds in Churchill Meadows and Lisgar come with tall, dry basements ready for theatres, gyms and bars.
Close to Square One and the transitway, registered second units rent quickly and Mississauga's registration is free, making a legal basement suite one of the city's smartest investments. Whatever you start with, you end with finished square footage your family uses every week, and a number your Mississauga house carries at resale.
What we build in Mississauga basements
Basement finishing
Theatres, bars, gyms and family spaces. Wood studs with metal tracks and moisture-resistant drywall as standard, finished to match the rest of your home.
EXPLORE BASEMENT FINISHING →
Home renovations
Kitchens, bathrooms and whole-home updates for Mississauga families, built with the same crew and warranty as our basements.
EXPLORE HOME RENOVATIONS →
Structural & legal suites
Underpinning for ceiling height, waterproofing, and permitted separate entrances for legal Mississauga second suites.
EXPLORE STRUCTURAL WORK →Poured concrete, seven-foot ceilings and a 40-minute drive from our shop
Most of the Mississauga basements we open up were built between the 1970s and the 1990s, when Erin Mills, Meadowvale and Lisgar went up one subdivision at a time. That era gave the city poured-concrete foundations and ceilings of seven feet or more, so underpinning rarely enters the conversation here. We go straight to layout: where the theatre wall goes, whether the bathroom can sit under the existing plumbing stack, how much of the mechanical room can be reclaimed.
The trade-off with that vintage is moisture. Forty-year-old weeping tile and original window wells show up often enough that we check both before quoting, and a DRICORE R+ insulated subfloor is usually part of the plan. The older streets of Clarkson and Port Credit, with their 1950s and 1960s bungalows, sit lower and wetter than the newer stock and get a closer look.
Permits go through the City of Mississauga Building Division. A finished basement with a new bathroom or bedroom needs one, and our licensed structural engineer prepares and stamps the drawings while we file the application as part of the job.
Our most recent Mississauga project, on Gulfstream Way, finished 689 square feet for $70,000 to $80,000, a useful marker for a mid-size family space with a bathroom. Richmond Hill to Mississauga is about 40 minutes down the 407, close enough for Kam to run the site directly rather than through a foreman you never meet.
Every basement is priced from the same quote sheet, line by line. Permit drawings, 3D design and the lifetime workmanship warranty are included.
A 689 sq ft basement on Gulfstream Way
- Completed 2023
- 689 sq ft
- About 11 weeks
- $70,000 to $80,000
Proof that a smaller footprint can still carry the full package: a bathroom with a custom tiled shower and niche, a bar with three custom cabinets, a mirrored gym wall, nine doors and 32 pot lights on an insulated DRICORE R+ subfloor, with the staircase refinished to match.
What a basement in Mississauga costs, by scope
The same quote sheet we use everywhere in the GTA, line by line. Permit drawings, 3D design and the lifetime workmanship warranty are included.
| Scope | Price before HST |
|---|---|
| 600 sq ft with a three-piece bathroom | $56,000 |
| 800 sq ft with a three-piece bathroom | $62,000 |
| 1,000 sq ft with a three-piece bathroom | $67,800 |
| 1,200 sq ft with a three-piece bathroom and two bedrooms | $75,200 |
| 1,500 sq ft with a three-piece bathroom and two bedrooms | $83,700 |
| The family basement: media wall, full bathroom, laundry, around 1,000 sq ft | $60,000 to $85,000 |
| The entertainment build: theatre or media room, bar, gym, spa bathroom, 1,000 to 1,300 sq ft | $95,000 to $130,000 |
| Three-piece bathroom, added to a basement without one | $11,700 |
| Custom wet bar | +$15,000 |
| Home theatre setup | +$20,000 |
| Walkout entrance, permits included | $15,000 to $25,000 |
| Full-perimeter underpinning for low ceilings | $60,000 to $120,000 |
| Legal basement apartment, purpose-built | $75,000 to $110,000 or more |
Every basement is priced from the same quote sheet, line by line: a 1,000 sq ft basement with a three-piece bathroom comes to about $67,800 before HST, and the price per square foot falls as the basement grows because the permit, bin, breakers, stairs and bathroom cost the same at any size. Use the calculator to price yours. Cost guides: bathroom, walkout and underpinning.