What's the cost breakdown between plumbing, electrical, tile, and fixtures in a typical bathroom reno?

In a typical GTA bathroom renovation in the $25,000–$35,000 mid-range, plumbing accounts for roughly 15%–20% of the total cost, electrical 8%–12%, tile and waterproofing 20%–30%, fixtures and materials 25%–35%, and general labour (demolition, carpentry, drywall, paint) covers the remaining 15%–20%. These percentages shift depending on your choices, but they provide a useful framework for budgeting.

Let's break down a $30,000 mid-range bathroom renovation in Toronto as a concrete example.

Plumbing — $4,500–$6,000 (15%–20%)

This covers your licensed plumber's work: disconnecting and capping old plumbing during demo, installing new shut-off valves and supply lines, setting the toilet with a new wax ring and supply ($300–$600 for the toilet itself plus $200–$400 installation), installing the shower valve and trim ($400–$1,200 for the valve assembly), connecting the vanity faucet and drain, and final testing. If you're keeping plumbing in the same locations, you're at the lower end. Relocating a toilet or shower drain adds $500–$2,000 per fixture due to the drain work and potential permit requirements. Licensed plumber rates in the GTA run $85–$150 per hour, though most bathroom plumbing is quoted as a flat rate.

Electrical — $2,500–$3,500 (8%–12%)

Your licensed electrician handles GFCI outlet installation or upgrades (mandatory under the Ontario Electrical Safety Code for all bathroom receptacles), exhaust fan wiring and installation, vanity light fixture wiring, heated floor circuit (dedicated 15A or 20A GFCI-protected circuit), and any pot light or recessed lighting additions. ESA inspection is included in this scope — all electrical work in Ontario must be inspected before walls are closed. GTA electrician rates run $75–$120 per hour. The heated floor circuit and thermostat alone typically add $500–$800 to the electrical scope.

Tile and Waterproofing — $6,000–$9,000 (20%–30%)

This is often the largest single cost category because it includes both materials and significant labour. The breakdown includes cement board or backer board installation on shower walls ($300–$600 in materials), waterproof membrane application — Schluter Kerdi, RedGard, or equivalent — covering the entire shower area ($400–$800 in materials plus labour), floor tile installation ($8–$25 per square foot installed depending on tile choice), shower wall tile ($10–$25 per square foot installed), shower floor tile (often mosaic for drainage slope, $15–$35 per square foot installed), thinset, grout, and sealant ($200–$400 in materials), and a shower niche if included ($200–$500 for materials and additional labour).

The waterproofing stage is the most critical investment in your entire bathroom — a failed membrane leads to water infiltration, mould, and structural damage that can cost more to repair than the original renovation.

Fixtures and Materials — $7,500–$10,500 (25%–35%)

This category covers everything you see and touch: the vanity and countertop (semi-custom with quartz, $1,200–$2,500), toilet ($300–$800), shower valve and trim package ($400–$1,200), shower head and hand shower ($100–$500), faucet ($150–$500), mirror or medicine cabinet ($100–$600), exhaust fan unit ($100–$350), heated floor mat ($400–$1,200 depending on bathroom size), shower glass enclosure ($800–$2,500 for semi-frameless), towel bars, robe hooks, toilet paper holder, and other hardware ($150–$400), and paint ($50–$100 for quality mould-resistant bathroom paint).

General Labour — $4,500–$6,000 (15%–20%)

This covers demolition and disposal (including bin rental at $300–$600 in Toronto), subfloor inspection and repair if needed, drywall installation and finishing (moisture-resistant greenboard or DensShield in wet areas), door and trim carpentry, painting, cleanup, and project management by your general contractor. GTA general contractor rates run $65–$100 per hour, though bathroom renovations are almost always quoted as fixed-price contracts.

Budget Tip

If you need to trim costs, the highest-impact savings come from tile selection (choosing $5 per square foot porcelain instead of $15 natural stone can save $1,500–$3,000) and vanity choice (a quality stock vanity at $400–$800 versus semi-custom at $1,200–$2,500). Never cut the waterproofing, plumbing, or electrical budgets — these are the systems that protect your home and keep your family safe. Toronto Bath Remodeling can help you find contractors who provide detailed, transparent quotes through the Toronto Construction Network.