Real cost ranges for Montreal, QC, priced in CAD. Every row is what homeowners actually spend across the scope spectrum — the low end is a pull-and-replace on the existing footprint, the high end is a full custom build with premium finishes.
~1 min readUpdated 19 Apr 2026
Cabinets, counters, appliances, and plumbing/electrical updates drive the range. The top of the band reflects full layout changes and premium finishes; the bottom holds for pull-and-replace scopes on the existing footprint.
Scope yours with Baily in MontrealTile, fixtures, and waterproofing are the big drivers. Primary and ensuite bathrooms with walk-in showers or freestanding tubs sit near the top of the band; hall baths come in closer to the bottom.
Scope yours with Baily in MontrealDetached units and garage conversions vary most by square footage, foundation type, and utility runs. Where local law does not recognize ADUs, this row maps to the nearest annex / granny-flat / laneway equivalent.
Scope yours with Baily in MontrealWhole-home scope covers all trades plus permitting, structural, MEP, and finishes. Historic properties, listed buildings, and seismic-retrofit markets sit well above the median.
Scope yours with Baily in MontrealMaterial choice (asphalt shingle, tile, standing-seam metal, membrane) dominates the range. Pitch, access, and city-specific wind/fire codes add the rest.
Scope yours with Baily in MontrealComposite decking, hardwood, pavers, and concrete slab are the main price bands. Elevated decks and outdoor-kitchen integrations push the high end.
Scope yours with Baily in MontrealFraming, insulation, egress windows, and waterproofing move together. Adding a bathroom or full kitchen pushes the cost well above the base finish scope.
Scope yours with Baily in MontrealGunite, vinyl-liner, and fiberglass each have distinct price bands. Spa integration, water features, and decking lift the top of the range.
Scope yours with Baily in MontrealPrep work (siding repair, pressure wash, priming) is the hidden driver. Coastal and high-UV markets use specialty coatings that cost more but last longer.
Scope yours with Baily in MontrealHardwood, LVP, tile, and stone span a wide range. Subfloor repair and leveling for old construction add meaningful cost on top of the finish material.
Scope yours with Baily in MontrealDemande à Baily pour ta rénovation à Montréal et tu ne seras pas baladée de sous-traitant en sous-traitant. Montréal est le marché de rénovation francophone le plus actif en Amérique du Nord, et le modèle de RenoAssistance qui envoie une seule demande à une douzaine d'entrepreneurs fonctionne mal ici pour des raisons précises. Le cadre de la Régie du bâtiment du Québec (RBQ) impose une licence d'entrepreneur général spécifique (1.1.1 ou 1.1.2) avec cautionnement et examen — une vérification qu'un comparateur en ligne fait rarement sérieusement. Le patrimoine de Vieux-Montréal, du Plateau Mont-Royal et d'Outremont exige une connaissance fine des règlements d'urbanisme d'arrondissement. La Loi 101 impose le français par défaut dans les contrats et la documentation commerciale. Et les cycles de gel-dégel extrêmes du Québec punissent sans pitié une fondation ou une intempérisation mal détaillées. Baily détient ce contexte et te met en lien avec un seul entrepreneur RBQ montréalais qui correspond à ta propriété, ton arrondissement et ta portée. Un pro par propriétaire, pas douze inconnus.
Read the full Montreal guideCost ranges are only half the picture. See how one-builder scoping compares to a bid fan-out before you talk to either.
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