Roughly what does poly-B replacement cost in a Calgary home?

Poly-B replacement in a Calgary home typically runs $4,000–$15,000+, depending on the size of the home and complexity of the job. Most average-sized Calgary homes (1,200–1,800 sq ft with a developed basement) fall in the $6,000–$10,000 range for a full repipe.

Here's how the pricing breaks down in the Greater Calgary market:

• Small home / condo / townhouse (under 1,200 sq ft): $3,500–$6,000
• Mid-size home (1,200–2,000 sq ft): $6,000–$10,000
• Large home (2,000+ sq ft, multi-bathroom, developed basement): $10,000–$15,000+

The biggest cost driver is access — how much drywall needs to be opened up to reach the existing poly-B. Some plumbers can snake new PEX tubing through walls with minimal demolition, which keeps costs down. Others require significant drywall removal, which adds both labour and patching/painting costs on top of the plumbing bill. Make sure you clarify upfront what's included in the quote — drywall repair and painting are often excluded.

What's typically included in a full repipe quote: removal of all poly-B supply lines, installation of new PEX-A or PEX-B piping, new fittings and shutoffs, and a final inspection. What's often excluded: drywall patching, painting, restoring tile or cabinetry disturbed during access, and permit fees.

Calgary-Specific Considerations

Poly-B (polybutylene) was installed widely in Calgary homes built between roughly 1978 and 1995 — so if you're in communities like Dalhousie, Edgemont, Woodbine, Shawnessy, Lakeview, or similar suburbs from that era, there's a good chance it's in your home. Calgary's water chemistry and chlorine levels have been particularly hard on poly-B fittings over the decades, accelerating the degradation that makes this pipe notorious for leaks and failures.

A building permit is required for a full repipe in Calgary — this is not optional. The City of Calgary issues plumbing permits, and a licensed plumber must pull the permit and have the work inspected by a Safety Codes Officer. Budget roughly $200–$500 for permit fees on top of the labour and materials quote. Any plumber who suggests skipping the permit is a red flag.

From an insurance standpoint, many Calgary home insurers are now surcharging or refusing to insure homes with poly-B still in place. Getting it replaced can actually lower your premiums or restore full coverage — worth a call to your broker once the work is done.

This is firmly a licensed-plumber job — not a DIY project. Beyond the permit requirement, the liability exposure from a failed connection in a pressurized supply line (think flooded basement, damaged finishes, mould) makes professional installation non-negotiable. Get at least two or three quotes, ask each plumber specifically about their access strategy and what's included in the price, and verify they carry WCB Alberta coverage and liability insurance.

You can find licensed plumbers serving Greater Calgary in the Calgary Construction Network directory — a good starting point for getting competitive quotes on your repipe.