The drain service of Pure Mechanical GroupMetro Vancouver + Fraser Valley
No. 61 · Done by Pure Mechanical Group

Rough-in plumbing: what it involves and what it costs

The drains, vents and water lines that go in before the walls close on a new build, an addition or a suite. Installed to code, pressure tested and inspected.

Typical cost$3,989–$6,989 a bathroom
How it starts$269 on-site estimate
If you go aheadThe $269 comes off the price
Who does itPure Mechanical Group, the company behind Unclog.it
WhereMetro Vancouver + Fraser Valley
A house cut away to show hot and cold water lines and drains running to every fixture
Fig. 61: rough-in plumbing

What rough-in plumbing typically costs

One bathroom$3,989–$6,989Drains, vents and water lines before the walls close.
A whole houseQuoted from the drawingsPriced on the fixture count and the layout.

Typical prices in Metro Vancouver and the Fraser Valley in 2026, before tax. They are a guide, not our quote. Too much depends on your home to price these jobs unseen, so your price is set on site, in writing, before any work starts.

When you need it

  • You are building a house, laneway home or addition
  • A basement is being turned into a suite
  • Your builder needs a plumbing contractor on the permit

What changes the price

Number of fixturesPriced largely by the fixture count and the number of floors.
Below-slab workDrains under a basement floor go in before the concrete is poured.
Permits and inspectionsEach stage is inspected before it can be covered.

What the job involves

  1. Review the drawings and coordinate with the builder and the other trades.
  2. Install the below-slab drains before the concrete is poured.
  3. Run drains, vents and water lines through the framing.
  4. Pressure test and pass the rough-in inspection.
  5. Return at the end of the build to set the fixtures.
Time on site
Days to weeks, depending on the build
Permits
A plumbing permit and staged inspections are required.

How pricing works for this job

There is no one price for rough-in plumbing, because the factors above change it from one home to the next. It starts with an on-site estimate for $269. A Pure Mechanical Group plumber looks at the job and gives you a price in writing, good for 30 days. Approve it and the $269 comes off the price. If you do not go ahead, the fee covers the visit. Anything found once work has started is priced and approved before it is done.

Call 1-800-604-0631.

Questions people ask

How much does rough-in plumbing cost in Metro Vancouver?

One bathroom: $3,989–$6,989. A whole house: quoted from the drawings. Typical prices in Metro Vancouver and the Fraser Valley in 2026, before tax. They are a guide, not our quote. Too much depends on your home to price these jobs unseen, so your price is set on site, in writing, before any work starts.

When does the plumber come in on a new build?

Twice early on: before the slab is poured, and again once the framing is up and before insulation.

Can you work from our drawings?

Yes. Send the plans when you ask for the estimate.

Do you handle the permit?

The plumbing permit is taken out by the plumbing contractor, and we book the inspections.

Is the estimate free?

No. A Pure Mechanical Group plumber comes out, looks at the job and gives you a written estimate. Approve it and the $269 comes off the price. If you do not go ahead, the fee covers the visit.

What if you find something unexpected once work starts?

The estimate is based on what can be seen. Anything found once a wall, floor or the ground is open is shown to you, priced and approved before it is done.