How Much Does Poly-B Replacement Cost in Calgary? (2026 Guide)

Short answer: Most whole-home Poly-B replacements in Calgary cost between $8,000 and $15,000. Where your house lands depends on its size and layout, how easy the pipe runs are to reach, and how finished you want the walls afterward. Pipe only sits at the low end. Pipe, drywall and paint back to original sits at the top.

The only way to get a real number is for someone to walk the house. But the factors are not a mystery, and knowing them helps you read any quote you get.

Diagram of what moves Poly-B replacement cost: size and layout, access to the pipe runs, wall finish afterward and what else is replaced, with most whole-home replacements between $8,000 and $15,000. — Four things move the price of a whole-home Poly-B replacement: size and layout, access to the pipe runs, the wall finish afterward, and what else is replaced. Most land between $8,000 and $15,000.

What moves the price?

Factor	Toward the low end	Toward the high end
Size and layout	Smaller home, one or two bathrooms, bathrooms stacked above each other	Larger home, more bathrooms, fixtures spread across several floors
Access to the runs	Unfinished basement ceiling, open mechanical room	Finished ceilings, tiled walls, built-ins in the way
Wall finish afterward	Repipe only, you handle patching	Repipe, drywall and paint back to original
What else is replaced	Pipe and shut-off valves	Plus fixtures, a water heater or other upgrades done at the same time

Why are the walls half the job?

Pulling the Poly-B out and running new PEX is the straightforward part. Quotes vary so much because of the restoration: every access cut has to be patched, taped, sanded and painted. A lot of plumbers leave that to you, so their number looks lower but you still have to hire a drywaller and a painter. We handle pipes, drywall and paint with one crew, so the price you are quoted is the finished job.

What should a Poly-B replacement quote include?

Removal of the Poly-B supply lines and fittings
New PEX to every fixture, plus new shut-off valves
The City plumbing permit and inspection
A pressure test before anything is closed up
Drywall repair and paint, if you choose restoration
Written documentation of the replacement for your insurer

If a quote leaves any of these out, ask why. Comparing a pipe-only price against a finished-job price is how people end up surprised.

Why PEX keeps the cost down

PEX bends through walls and ceilings in long runs, so there are fewer access cuts to open and patch than with rigid pipe. Fewer cuts means less labour and less drywall work, which is where most of the cost sits.

What does it cost to leave it?

Poly-B can hold for years and then fail without warning. The repipe is a known cost. A failed fitting behind a finished wall adds water damage, mould remediation and a claim to the bill, and insurers are increasingly charging more or declining homes that still have it. Here is how Poly-B affects your home insurance.

How to get an accurate number

Book a free assessment. We confirm it is Poly-B and trace how the runs are laid out.
Decide on the finish level: repipe only, repipe and drywall, or full restoration with paint.
Get the price and timeline in writing before anything starts. The quote is the price.

Common questions

How much does it cost to replace Poly-B in a Calgary house?

Most whole-home replacements land between $8,000 and $15,000, depending on size, access and how finished you want the walls.

Can I replace only part of the Poly-B?

Sometimes, for example a section exposed during a renovation. Insurers generally want to know the house is fully clear of Poly-B, so a whole-home replacement is what most people end up doing.

How long does Poly-B replacement take?

Most homes are repiped in a few days, with a few more for drywall and paint. Most families stay in the house, and the water is back on most evenings.

Does replacing Poly-B lower my insurance?

It removes the risk insurers are worried about and makes the home straightforward to insure again. Every policy is different, so confirm with your insurer or broker.