Interior painting is the most accessible renovation a Canadian homeowner can undertake — and one of the most underestimated in scope and cost when done professionally. A whole-home professional paint job on a 1,500 sq ft house runs $3,500–$7,500 including materials, which surprises many homeowners who anchor on DIY paint-and-roller costs. The gap is explained by surface preparation: professional painters budget as much time for patching, sanding, taping, and priming as they do for applying paint. Toronto and Vancouver rates run 15–20% above Calgary or Halifax.
This calculator estimates professional interior painting costs based on your home's square footage, number of rooms, ceiling height, and the scope of work. Configure whether the project includes ceilings and trim in addition to walls, how many accent or feature walls, the number of coats required (relevant for drastic colour changes), and paint quality tier — from builder-grade to premium lines like Benjamin Moore Aura or Sherwin-Williams Emerald. The breakdown shows labour versus materials separately so you can evaluate DIY substitution for specific scopes.
The highest-leverage decision is paint quality, not number of coats. Premium paints ($80–$120/gallon) have better coverage, hide imperfections, and hold colour longer than budget options — one coat of premium often outperforms two coats of contractor-grade. For trim and doors, always use a semi-gloss or gloss finish regardless of quality tier: it holds up to washing and scuff-resistance where flat paints fail.