Mississauga, Ontario — basement renovations by Desire Basements

BASEMENT RENOVATIONS · MISSISSAUGA, ONTARIO

Basement Renovations in Mississauga

Luxury basement finishing for Mississauga homes — free 3D design, itemized fixed pricing, lifetime warranty, and a written timeline backed by our $200-per-day on-time guarantee.

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MISSISSAUGA'S TRUSTED BASEMENT RENOVATION COMPANY

Basement renovation in Mississauga, street by street

The city's housing stock spans decades: 1970s–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 your starting point, we turn that lower level into finished, livable square footage your family uses every day — and real value added to your Mississauga home.

ERIN MILLSMEADOWVALECLARKSONCHURCHILL MEADOWSLISGARPORT CREDIT

10+YEARS

400+GTA BASEMENTS

1POINT OF CONTACT

Basement bathroom with marble vanity and gold fixtures — basement renovation in Mississauga by Desire Basements

BASEMENT RENOVATION SERVICES · MISSISSAUGA

What we build in Mississauga basements

Basement finishing

Theatres, bars, gyms and family spaces — metal studs 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 work in Mississauga — underpinning and legal second suites

Structural & legal suites

Underpinning for ceiling height, waterproofing, and permitted separate entrances for legal Mississauga second suites.

EXPLORE STRUCTURAL WORK →

PERMITS & APPROVALS · MISSISSAUGA

Basement renovation permits and second-unit registration in Mississauga, handled for you

Mississauga requires a building permit for new basement units and for finishing work, and every second unit must be registered with the city under its Second Units Registration By-law — registration itself is free once your permits are signed off. Suites must meet Ontario Building Code and Fire Code requirements: proper egress, fire separation between units, interconnected smoke and CO alarms, and minimum ceiling heights. We design to code from day one, pull the permits, pass the staged inspections, and hand you a unit that registers cleanly — no surprises at the finish line.

Drawings & permit
Prepared and filed for your Mississauga address

Code-first build
Egress, fire separation and alarms built in

Staged inspections
Framing, insulation, ESA electrical, plumbing

Free registration
Second unit registered with the city at no cost

INCLUDED WITH EVERY MISSISSAUGA ESTIMATE

A free 3D design of your finished basement

Walk through your basement room by room — move walls, try finishes, see your exact space — and approve every detail before construction begins.

★★★★★

"Kam delivered the project on time and on budget. It’s now been three years since our basement was completed, and it still looks incredible — we continue to receive so many compliments on the space."

MS FAIRBARN · GTA HOMEOWNER · ✓ GOOGLE REVIEW

THE DESIRE GUARANTEES

Built on trust, backed in writing

10+YEARS OF EXPERIENCE

A decade of basement renovations across the GTA — owner-led on every single project.

LifetimeWARRANTY COVERAGE

Every project, every material, every detail — warrantied for the life of the house.

$200/dayON-TIME GUARANTEE

Your quote includes a written timeline. If we miss it, we pay you $200 for every late day.

WHAT MISSISSAUGA HOMEOWNERS INVEST · REAL PROJECT DATA

$76,000MEDIAN PROJECT IN MISSISSAUGA

$55/sq ftPROJECTS START FROM

$60–150KMOST GTA PROJECTS FALL WITHIN

From our 2026 GTA Basement Cost Report — built from the signed contract values of our completed projects.

See the full report → Estimate my basement

MISSISSAUGA BASEMENT QUESTIONS

Answers for Mississauga homeowners

Do I need a permit for a basement apartment in Mississauga?

Yes — new second units in Mississauga require a building permit, and the finished unit must be registered with the city under the Second Units Registration By-law. Registration is free once inspections are signed off. Desire Basements handles permits, inspections and registration end to end.

What are the requirements for a legal basement apartment in Mississauga?

A legal Mississauga second unit needs its own cooking, sleeping and bathroom facilities, a safe egress window or door, fire separation from the main home, interconnected smoke and CO alarms, and Building Code minimums for room sizes and ceiling height. We build all of it to code as standard.

How much does basement finishing cost in Mississauga?

Most professional basement renovations in Mississauga start around $55 per square foot and up — a 1,000 sq ft project starts in the $55,000 range with standard finishes. Across our completed Mississauga projects, the median total investment is about $76,000. Every Desire quote is itemized and locked before you sign, with a free 3D design included.

Ready for your Mississauga basement renovation?

Book a free in-home consultation — we'll measure your space, talk through your vision, and bring a 3D design with your itemized basement renovation quote.

Get a Free Quote in Mississauga →

FREE 3D DESIGN · LIFETIME WARRANTY · $200/DAY ON-TIME GUARANTEE

KEEP EXPLORING · MISSISSAUGA

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