Do You Need a Utility Locate to Grind a Stump in Ottawa?

Every stump we grind in Ottawa has a utility locate called in before the machine moves, it costs you nothing, and in Ontario it is required for any project that breaks ground — however small the hole. The organisation that handles those requests changed its name on 1 October 2026: Ontario One Call is now Ontario Dig Authority. Nothing about what you have to do changed with it.

That is the part that moves your date. A locate takes days, not minutes, and those days sit between your phone call and the grind. Here is how it works, what it does to your booking, and what we will not do to get around it.

What a utility locate actually is

A locate is a single request that goes out to every utility with buried infrastructure under the ground you are about to disturb. Each of them is responsible for marking where their own lines run — paint on driveways and sidewalks, flags in lawn and garden beds — or for telling you they have nothing there.

What comes back is a set of markings and a set of documents, and together they tell the person running the machine where the gas, the hydro, the water and sewer, and the telecom lines sit. Ontario Dig Authority puts it plainly on its own front page: it’s free, it’s easy, it’s the law.

It costs you nothing. Infrastructure owners in Ontario are prohibited from charging for the locates they provide. We put the request in on every job, and on commercial work the ticket goes into the client’s file.

Why grinding a stump counts as digging

This is the part people argue with, so it is worth being plain. Ontario Dig Authority states it without a qualifier: locates are required for any project that breaks ground, no matter the size or depth of the excavation.

A stump grind breaks ground. The cutter wheel works below grade across the whole root flare, and the flare on a mature tree is wider than the trunk that stood on it. So the disturbed area is not the size of the stump you can see. It is the size of the root plate underneath it.

And the front yard is where the services are. Gas, hydro, water and telecom all have to cross the yard to reach the house. A stump between the street and the front wall is over that corridor by definition. Same for one beside a meter or a pedestal.

A grinder wheel into a gas line is not a bad afternoon. It is an evacuated street, a utility crew and a report with your address on it. That is the whole reason this step is not optional and not negotiable.

Ontario One Call is now Ontario Dig Authority

As of 1 October 2026 the organisation operates under a new name. Its own announcement, published 29 June 2026, is unusually clear about how far the change goes: “This is a brand change only. Existing services, processes, compliance requirements, and stakeholder responsibilities remain unchanged.”

So if you know the name Ontario One Call, it is the same body and the same process. Branded material is being swapped over between November 2026 and March 2027, so both names will be in circulation for a while. If anyone tells you the rules changed in October, they did not.

The five business days are the real constraint

Ontario Dig Authority’s instruction to anyone planning to dig is to submit the request at least five business days before the work. Five business days is a week on a calendar, longer if a holiday lands in it.

Two things follow, and both are about your date rather than your price.

• We cannot grind tomorrow. If somebody offers you same-day stump grinding on a yard that has never had a locate called, either the locate is not being called or it was called for something else. Worth asking which.
• Booking early is worth more than it sounds. The ticket has to clear before the machine arrives, and in the back half of the season there is a hard end to the working window.

There is a limit at the other end too. Under Ontario’s locate rules an excavator cannot put a request in unless work is expected to begin within thirty days, so we cannot bank tickets months ahead. The request goes in when the job is real.

Markings do not last forever either. A locate is valid for at least sixty days, and each infrastructure owner sets its own period, some of them longer than that minimum. If your job slips well past it, the request gets made again.

The paint and the flags are the job plan

When the markings turn up in your yard, leave them where they are. Ontario Dig Authority asks property owners not to remove paint or flags, because they carry the safety information for work that has not happened yet.

And if the job changes after the request went in — a second stump, or a different spot for the chips — tell us before the day. Ontario Dig Authority is explicit that a changed project needs a new request: a locate covers the excavation it was asked about, not whatever the yard turns into.

What a locate does not cover

Here is the gap that catches people, and it is the one thing on this page we need from you. A locate covers infrastructure owned by the utilities. It does not cover what you or a previous owner buried.

• Irrigation and sprinkler lines. Shallow, unmarked, and routed right where a stump tends to be.
• Invisible pet fence. Usually a loop around the whole property, barely under the sod.
• Low-voltage landscape lighting. Same depth, same problem.
• Private septic components, wells and cisterns. Normal on the rural properties we work in Carp, Navan and Greely.
• Pool plumbing, hot tub feeds, and anything run out to a shed or garage.

If any of that is down there, you are the only person who knows. Tell us at quote time and we will either work around it or tell you straight that we cannot.

What we would not do

We would not grind a stump on an unlocated yard because the customer says it is fine. Not for a rush, not for a tree company with a crew standing around, not for a stump in the middle of an empty-looking lawn. The person behind that machine is the one who wears it.

We would not tell you a locate is a formality we file to cover ourselves. It is a legal requirement before ground disturbance in Ontario, and it is the reason a stump job has a lead time at all.

We would not give you a date before the ticket is in. Promising a day we cannot hold only moves the bad news later.

And we would not use the visit to sell you something else. We grind stumps. If the tree is still standing, that is a Max Trees job — same owner, different company — and we hand it across by name instead of quoting it ourselves. It is also why tree companies put us on their jobs: we are not going to turn up at their client’s house and price the rest of the yard.

Getting a stump quote in Ottawa

Send a photo and a rough measurement taken across the root flare at grade, not across the cut face, and you will get a written number back without anyone driving out. Measuring the flare rather than the trunk is the single thing that stops a quote moving on the day, and it works just as well on somebody else’s quote as ours.

Our minimum charge is $160 + HST, and on a small job that covers everything: the grind, the locate and the cleanup. Larger stumps are priced by diameter, never by the hour. The machine fits through a 36-inch gate, and if your access will not work we will say so before you commit rather than after. What goes in the hole afterwards is your call, and we have written up the options for backfill, settling and seeding separately.

Call (613) 715-0103 or use the quote form. Photos are welcome and they usually save a site visit. We cover Kanata, Orleans, Barrhaven, Carp, Manotick, Navan and Greely — have a look at stump grinding in Kanata, what is involved in residential stump grinding, or how we work as a subcontractor for tree companies.

Quick answers

Do I have to call the locate in myself?

No. We submit the request as part of the job and there is no charge to you for it. If a locate has already been called on the same yard for other work, tell us — we still need the excavation to match what was requested, because a changed project needs a new request.

How long before you can grind my stump?

Plan on at least five business days from the request going in, which is Ontario Dig Authority’s own guidance to anyone about to dig. A week is a fair expectation and a statutory holiday stretches it. The quote itself comes back long before that.

Is Ontario One Call gone?

Same organisation, new name since 1 October 2026 — Ontario Dig Authority. Its own notice calls it a brand change only, with services, processes and compliance requirements unchanged. Neither name means anything different for your job.

What about my sprinkler lines and invisible fence?

Those belong to you rather than to a utility, so a locate will not mark them. Tell us roughly where they run at quote time. If we cannot work around them we will say so, rather than guessing and handing you a repair bill.

Photo: our own work, Ottawa. Sources, all read 27 October 2026 — Ontario Dig Authority: home page (five business days; locates required for any project that breaks ground, whatever its size or depth; free), rebrand notice dated 29 June 2026 (name change effective 1 October 2026, brand change only), locates FAQ (validity at least 60 days, set by each infrastructure owner; paint and flags), and the overview of legislative and regulatory changes dated 1 May 2024 (no charge for locates; the thirty-day rule).