Drywall, Taping and Painting in Ontario: Costs, Finish Levels, Repairs, New-Home Packages and How to Hire the Trades, From a Builder

RenovationsDrywall, Taping & Painting

Drywall, Taping and Painting in Ontario: What the Three Trades Cost, What “Finished” Means, and Who Is Responsible When the Seams Show

Written by a builder who has hired boarders, tapers and painters for 300-plus houses and settled the argument between them more times than he can count. Prices are Ontario rates checked October 2026, per square foot of wall and ceiling, which is the only honest way to price this work.

Drywall is the trade everyone thinks they understand and nobody prices right. The number you need is not the floor area of the house; it is every wall from both sides plus every ceiling, which is about three times as much. The word you need is not “finished”; it is a finish level from a published standard. And the person you need is not the drywaller or the painter; it is whoever you have put in charge of saying the walls are ready for paint, because if nobody is, you will pay both of them and get neither. These pages cover the costs, the levels, the materials, the repairs, the new-house package, and how to hire people who leave walls you can light from the side.

Price the whole interior Read the cost guide Review my quotes, $99

The numbers

Southern Ontario, per square foot of wall and ceiling surface, before HST. Checked October 2026.

$3.45drywall supplied, hung, taped, sanded
$1.50taping and sanding only, Level 4
$2.50primer and two coats, new walls
$300the smallest drywall repair

A 2,000 sq ft house has about 6,500 sq ft of drywall. Boarded, taped and painted at a mid grade it lands at $36,000 to $48,000 before HST, or $18 to $24 per square foot of floor. A 1,000 sq ft basement is $20,000 to $28,000. Those are the figures to hold up against a builder’s allowance.

Start here

Drywall installation: costs, board, sheets

What drywall costs per square foot, how many sheets, 1/2 vs 5/8, Type X, moisture-resistant, soundproofing, ceilings, and board on ICF walls.

Taping and finishing: levels, seams, inspection

Level 3, 4 and 5 explained, what taping costs, paper vs mesh, corners, why seams show after paint, and the inspection checklist.

Interior painting: costs, primer, paint, trim

What painting costs by surface, priming new drywall, sheen, builder vs premium paint, doors and trim, flashing and roller marks, hiring a painter.

Repairs, ceilings and old houses

Holes, cracks, pops, water damage, popcorn ceilings, skim coating, plaster, and the asbestos rule for anything built before 1990.

New homes, basements and contractors

Whole-house cost by grade, takeoffs from plans, comparing quotes, the contract, who is responsible for what, the sequence, allowances.

The calculators

Five of them, on one set of rates, all measuring walls and ceilings properly. Use the one that matches the job.

Complete interior finishing calculator

Drywall, taping, primer, paint, trim and doors for a whole house or basement, room by room, at three grades. One number, nothing counted twice. Start here for a new build.

Drywall installation cost calculator

Sheets, board type, Type X, moisture-resistant, hang only or hung and finished, tall and cathedral ceilings, delivery.

Drywall taping cost calculator

Board already hung: Level 3, 4 or 5 on walls and ceilings separately, corners, the state of the hanging, dust control.

Interior painting cost calculator

Walls, ceilings, baseboard, casing and doors as four numbers; new drywall or repaint; paint grade; dark colours; stairwells; occupied house.

Drywall repair cost calculator

Patches, cracks, pops, water-damaged ceilings, popcorn removal and skim coating, with minimum charges and the pre-1990 test.

Paint and primer calculator

Already on the site: how many gallons for a do-it-yourself job, by room, with the door and window deductions.

Six things I tell every customer about drywall and paint

  1. Price the walls, not the house. A 12 by 12 room with an 8-ft ceiling has 144 sq ft of floor and about 500 sq ft of drywall. Any quote “per square foot” has to say per square foot of what. The cost guide.
  2. Name the finish level. Level 4 for painted walls, Level 5 for ceilings and anywhere the light rakes. “Paint-ready” is not a specification; it is an opinion. The levels.
  3. Prime new drywall with a drywall primer. The board and the compound drink paint differently. Skip the primer and every joint shows through the finish like a stripe. Why.
  4. Check the walls with a light held flat against them before the painter starts. Not at noon with the lights off. That inspection is the only thing that stops the drywaller and the painter blaming each other. The checklist.
  5. Test before you sand anything built before 1990. Joint compound and ceiling texture from those years can contain asbestos, Ontario’s regulation says so, and the test is $150. Read this before the popcorn comes down.
  6. A $300 repair for a $3 hole is three visits, not a rip-off. Patch, dry, coat, dry, sand, prime. Price the visits. Repair costs.

Have quotes or plans in hand? Let a builder read them first

For $99, I put your drywall, taping or painting quotes on one grid, check the square footage against your rooms, name the finish level and the coats each one actually promised, and tell you what is missing and which one to sign. For a new build or a basement, $249 turns your plans into a room-by-room takeoff of board, finish levels, primer, paint and trim, with a budget by grade, that three contractors can price the same way.

Drywall and painting quote review, $99 Interior finishing takeoff, $249 Check the quotes yourself first

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