So a drainage quote with no PST line is wrong?

No — that is the normal case. The contractor pays PST on the materials when they buy them, and it is part of their price rather than a line added to yours.

GST is a separate federal tax on the service and is not what this page is about. Ask your contractor to show you how their quote treats it, and compare quotes on the same basis.

Can I ask to pay the PST myself?

You can agree to it in writing, which is exactly what the exception rule is. It changes who remits the tax, not whether it is owed.

The quote has a PST line on it. Should it?

Is there PST on a perimeter drain replacement in BC?

Direct answer · reviewed 2026-10-06

Usually not, and this is one of the few things about a drainage job with a clean provincial answer. Burying a drain around a foundation is a real property contract: the pipe stops being a product and becomes part of the land. Under that rule the contractor pays the PST themselves, when they buy the pipe, the gravel and the fittings. It is a cost inside their price, not a tax added on top of it. There is a legitimate exception — the two of you can agree in writing that you will pay the PST instead — but it has to be agreed, not announced, and if it was not in the written agreement then a PST line appearing on the final invoice is worth a question. None of this touches GST, which is a separate federal tax and a separate conversation.

Conditions and exceptions

This is about PST, the provincial tax, and only about it.
If you are comparing two quotes and only one shows PST, you are probably not comparing the same thing — ask both what their price includes.
Tax questions about your own contract are for your accountant or the Ministry of Finance. This page quotes the Ministry's own notice.

Compare drainage quotes

Local evidence

Every figure below is quoted from the source shown or is our labelled estimate. Verified dates are the day we last checked the source; a figure whose check is overdue is withheld rather than shown.

Does a contractor add PST to a drainage bill?: No, as a rule. The contractor pays PST on the pipe, gravel and fittings when they buy them; it is a cost inside the price, not a line added to it; This is about PST only. It says nothing about GST, which is a separate federal tax on the service.; Province of British Columbia, Ministry of Finance · quoted · verified 2026-10-06
When can a contractor make the customer pay the PST?: Only by agreement, in writing, and only where the conditions for the exception rule are met; If it is not in the written agreement, it is not the exception rule — and a PST line that appears for the first time on the final invoice is worth asking about; Province of British Columbia, Ministry of Finance · quoted · verified 2026-10-06

Why the tax is already in the price

The rule turns on what the pipe becomes. Sold to you in a yard it is goods, and goods carry PST. Dug in around your footings and backfilled, it is part of the land, and the contract that put it there is a real property contract. No, as a rule. The contractor pays PST on the pipe, gravel and fittings when they buy them; it is a cost inside the price, not a line added to it

So the tax is paid — just upstream of you. It is inside the number on the quote in the same way the excavator rental and the gravel delivery are. This is why a drainage bill tends to look different from, say, buying an appliance, where the tax is a visible line because the appliance stays goods.

The exception, and what makes it legitimate

There is a real route by which you can end up paying the PST, and it is not a trick. Only by agreement, in writing, and only where the conditions for the exception rule are met

The Court of Appeal has made the paperwork side easier for contractors rather than harder: a written agreement does not have to cite the section of the Act, and the letters PST are enough, as long as the rest of the conditions are met. What has not changed is that there has to be an agreement. The word to hold on to is agree.

What to ask, in one sentence

If a quote or an invoice shows PST, ask: is this the exception rule, and where is it in what I signed? A contractor using it properly will answer in a sentence, because they wrote it into the agreement on purpose.

And if the answer is that it was a mistake, that is a perfectly ordinary thing to happen on a small trade invoice. It is also several hundred dollars on a job this size, which is why it is worth the sentence.

Questions homeowners ask

So a drainage quote with no PST line is wrong?: No — that is the normal case. The contractor pays PST on the materials when they buy them, and it is part of their price rather than a line added to yours.
What about GST?: GST is a separate federal tax on the service and is not what this page is about. Ask your contractor to show you how their quote treats it, and compare quotes on the same basis.
Can I ask to pay the PST myself?: You can agree to it in writing, which is exactly what the exception rule is. It changes who remits the tax, not whether it is owed.

Your next step

Two prices are not comparable until you know what each one includes, and tax is the quietest of the differences.

Put your quotes side by side

📞 Call 24/7 💬 Text

Sources

Provincial Sales Tax Notice 2022-001 — Notice to Real Property Contractors — Province of British Columbia, Ministry of Finance, accessed 2026-10-06

Code and municipal requirements are quoted from the sources above; price ranges are what named local companies publish, and the companies that publish them sell the work. Nothing here is a diagnosis of a particular house: only a camera in your own drain can tell you what is wrong with it. Report a correction.