How much does a three-piece basement bathroom cost in Calgary?

A three-piece basement bathroom in Calgary — consisting of a toilet, sink, and shower — typically costs between $8,000 and $18,000 if your home has an existing plumbing rough-in, or $12,000 to $22,000 without one. The wide range reflects significant differences in finishes, fixtures, and the condition of your existing basement infrastructure.

The biggest cost variable is whether plumbing rough-in exists beneath your concrete slab. Many Calgary homes built from the early 1990s onward include capped drain lines positioned for a future basement bathroom. If yours has this rough-in, the plumber connects to existing pipes with minimal concrete work — a straightforward job that keeps plumbing costs in the $2,500-$5,000 range. Without a rough-in, the plumber must break up the concrete floor, trench new drain lines to connect to the main stack, pour new concrete, and potentially install a backwater valve. This concrete breaking and new plumbing work alone adds $3,000-$6,000 to the project.

Cost Breakdown for a Typical Calgary Three-Piece Bathroom

Plumbing runs $2,500-$6,000 depending on rough-in status. This covers toilet supply and drain, sink supply and drain, shower drain and mixing valve, and connections to your home's existing water supply and drainage. A separate plumbing permit is required and must pass inspection by a Safety Codes Officer.

Electrical costs $800-$2,000 for a dedicated 20-amp GFCI circuit, vanity lighting, overhead or recessed lighting, exhaust fan wiring, and potentially heated floor wiring. A separate electrical permit is required. The exhaust fan must be vented directly to the exterior per the Alberta Building Code — budget for rigid ductwork through the rim joist.

Framing and drywall for a typical 40-60 square foot bathroom run $1,500-$3,500. Use mould-resistant purple board drywall ($22-$30 per 4x8 sheet) on all walls. Cement board or waterproof backer board is required behind the shower surround.

Shower installation varies dramatically by style. A basic acrylic shower stall costs $500-$1,200 installed — functional and leak-proof. A tiled shower with waterproof membrane, custom tile work, and glass door runs $3,000-$7,000. For a budget-conscious three-piece bathroom, the acrylic stall is the practical choice.

Fixtures and finishes including toilet ($250-$600), vanity with sink ($300-$1,200), mirror, lighting, faucets, and accessories add $1,000-$3,500 depending on quality. Mid-range fixtures from brands available at Calgary retailers offer the best balance of quality and value.

Flooring in a small bathroom is typically porcelain or ceramic tile at $8-$15 per square foot installed. For a 40-60 square foot space, that's $320-$900. Tile is the best choice for a basement bathroom because it's waterproof, durable, and works well with heated floor systems if you choose to add one.

Permit fees from the City of Calgary for a basement bathroom project typically run $500-$1,500 covering building, plumbing, and electrical permits. Never skip permits — unpermitted bathroom work creates serious problems when selling and can void your home insurance.

The most cost-effective approach is to install the bathroom during a larger basement development project, where the contractor is already on-site with trades scheduled. A standalone bathroom addition in an otherwise unfinished basement costs more per square foot because you're mobilizing multiple trades for a small space. Browse basement contractors through the Calgary Construction Network directory at calgaryconstructionnetwork.com to get competitive quotes for your project.