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BuildRules Directory / Mississauga

Window & door contractors in Mississauga.

Window, door and opening replacement or alteration services. Explore professionals serving Mississauga and compare their project experience.

3 published companies

Canata Construction

General contractors · Basement contractors · Window & door contractors

Licensed GTA general contractor providing kitchens, bathrooms, whole-home renovations, additions, basement apartments, commercial fit-ups, windows, doors and outdoor projects.

Mississauga
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Optima Windows & Doors

Window & door contractors

Toronto-area window manufacturer and installer providing replacement windows and entry-door installation across the GTA and other Ontario communities.

Mississauga
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Fixed Contracting Services

Roofing contractors · Window & door contractors

GTA exterior contractor providing residential and commercial roofing, windows and doors, siding, gutters, masonry, decks and related exterior work.

Mississauga
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What this Mississauga list actually covers.

3 published profiles match this page. BuildRules uses declared service areas and specialties for matching. Verification and paid placement are labelled separately.

Common project specialties
Windows & doors3 companiesDecks & porches2 companiesBasement renovations & finishing1 companyFences1 companyHome additions1 company
Check the rules first
DeckA deck less than 600 mm (2 ft) high is listed as permit-exempt. Higher or otherwise permit-triggering deck work should be checked against the City requirements before construction.Guidance reviewed Oct 1, 2026Basement renovationYes for basement finishing that creates rooms or living space, according to Mississauga’s published permit-required project list.Guidance reviewed Oct 1, 2026Home additionA residential addition uses a dedicated building permit submission package with site, architectural and supporting documentation.Guidance reviewed Oct 1, 2026Windows / doorsA new window or door, or increasing an existing opening, requires a permit. Same-size replacement is listed as permit-exempt.Guidance reviewed Oct 1, 2026