Your grandparents are already in the family grave, and your mother always said she wanted to be with them. Now you're wondering whether that's still possible after a cremation, and who you even call to ask.
Yes, in most cases you can bury ashes in an existing family plot. Most cemeteries in Ontario and Quebec allow one or more urns in a grave the family already holds, often above an existing casket burial. You'll need written permission from whoever holds the plot's rights today, the certificate of cremation, and payment of the cemetery's interment fee, which runs several hundred dollars at many cemeteries in 2026.
The rules come from each cemetery's by-laws, so the details change from one cemetery to the next. Here's what's the same everywhere, what differs between Ontario and Quebec, and what it costs.
Thinking of your own land rather than a cemetery? Different rules apply. See our guide to burying ashes on your own property in Ontario.
At a glance: adding an urn to a family grave
| Question | Ontario | Quebec |
|---|---|---|
| Who gives permission? | The interment rights holder named on the cemetery's records | The concession holder (titulaire de la concession) |
| If that person has passed away | The estate trustee or authorized next of kin, in writing | The heirs, usually through one representative they name |
| What you bring | Written authorization + certificate of cremation | Authorization + the documents the cemetery asks for |
| What it costs | Interment fee, about $700 to $800 at two Toronto cemeteries | Opening and closing, often $500 to $1,500 in Montréal |
| What to check first | How many urns the grave's certificate allows | How many years are left on the concession |
How many urns fit when you bury ashes in an existing family plot?
Cemeteries treat an urn as a second (or third, or fourth) interment in a grave the family already holds, so you don't need to buy a new plot.
Each cemetery sets how many burials one grave can take, and that number is written on the grave's certificate or contract. Two Toronto examples show the range:
- Mount Pleasant Cemetery allows up to six interments per grave, with no more than two casket burials.
- St. James Cemetery allows up to two caskets and four sets of ashes per grave.
Want the exact, all-inclusive price for your situation? Get my price →
Can ashes go above a casket, or before one?
Yes, at cemeteries whose by-laws allow it. In Ontario, the Bereavement Authority of Ontario's sample cemetery by-laws say that where ashes may go above casket burials, the cemetery can't refuse to bury the ashes first. It should warn you, though, that the urn may have to be lifted out later when a casket is buried below it. That's why the by-laws recommend a sturdy, non-biodegradable urn when a casket burial could still come later.
Who has to give permission in Ontario?
Sorting out who's allowed to sign is often the hardest part, especially when the plot was bought decades ago. In Ontario, you don't own the ground in a cemetery. You hold interment rights: the right to decide who is buried in that grave.
- The interment rights holder signs. That's the person named on the cemetery's records. If several people are listed, every one of them has to agree.
- If the rights holder has passed away, the rights become part of their estate. Written authorization then comes from the estate trustee or the authorized next of kin.
- Update the cemetery's records. Rights passed down through an estate have to be formally transferred. Mount Pleasant, for example, charges $185 to transfer interment rights.
You'll also need to give the cemetery the certificate of cremation before the interment, and pay the fees in full.
Who has to give permission in Quebec?
Quebec uses different words for the same idea, and the question is every bit as personal: who gets to say yes. You don't buy the land; you hold a concession, a right to use the plot for a set number of years. The concession holder decides who is buried there.
At Notre-Dame-des-Neiges, the largest cemetery in Montréal, the cemetery's rules say the concession holder may authorize the burial of anyone they choose. People outside the family need the cemetery's consent, though brothers and sisters don't. When the concession holder passes away, the heirs must tell the cemetery in writing within 90 days and name one person to act for all of them. Burials need three business days' notice.
Other Quebec cemeteries have their own rules, so ask for a copy of the regulations when you call.
Check the concession before you book
This is the question most families don't know to ask. Quebec concessions often run 25, 50, 75, or 99 years. At Notre-Dame-des-Neiges, a concession can't exceed 100 years. When the term ends, the family has to renew it on the cemetery's current terms. If the family plot was bought long ago, ask how many years are left and whether adding an urn means renewing first. Our guide to burial plot costs in Montréal explains how concession lengths work.
How much does it cost to bury ashes in an existing grave?
It's a fair thing to ask, and it's usually far less than buying a new plot. You're paying the cemetery to open the grave, place the urn, and close it again. Here's what published price lists show:
| Fee | Mount Pleasant (Toronto, April 2026) | St. James (Toronto, March 2025) | Montréal cemeteries |
|---|---|---|---|
| Burying the ashes | $710 | $775 (in a family plot) | Opening and closing often $500 to $1,500 |
| A second urn at the same time | Ask | $275 | Ask |
| Transferring the rights | $185 | Ask | Ask |
| Saturday interment | Ask | Surcharge | Many don't open graves on Sundays or holidays |
Taxes are extra on these prices. Adding a name to the headstone, a new marker, or the marker's care-and-maintenance contribution is also extra everywhere. Mount Pleasant publishes its current price lists, and any Ontario cemetery can give you its current price list when you call.
If you're comparing against a new plot, our guides to burial plot prices in Toronto and in Montréal show what a new grave costs by cemetery.
The cremation itself is a separate bill. With Cleo, it's a fixed, all-inclusive price covering transportation, the cremation, death certificates, and delivery of the ashes to your home. The final bill matches the quote you get on the first call. The cemetery sets its own interment fee, so ask them for a written quote too.
How to add an urn to a family plot, step by step
None of this has to happen this week. Here's the order most families follow when they're ready:
- Find the paperwork. Look for the interment rights certificate (Ontario) or concession contract (Quebec). If you can't find it, the cemetery office can look up the grave by name.
- Call the cemetery. Ask how many urns the grave can still take, whether they require a particular urn or vault, what the fee is, and how much notice they need.
- Get the right signatures. That's the rights holder or concession holder, or the estate trustee or heirs' representative if that person has passed away.
- Bring the certificate of cremation. Ontario cemeteries need it before the interment.
- Book the date. Ask about winter: some cemeteries hold interments until the ground thaws.
- Plan the inscription. Adding a name to the existing headstone goes through a monument company and needs the cemetery's approval.
Questions families ask
Frequently asked questions
Is it illegal to bury ashes in a cemetery without permission?
Asking is exactly the right step. Yes, the cemetery and whoever holds the grave's rights both have to agree before an urn goes in. In Ontario, the Bereavement Authority's sample by-laws also require both approvals before ashes are scattered on a grave.
Do I need an urn vault?
It depends on the cemetery. Some require one, some don't, and some only ask for a sturdy container. Ask before you buy anything: you may not need a vault at all.
Can we add Mom's name to the headstone that's already there?
Usually, yes. Most families add a line to the existing monument. The engraving is done by a monument company, the cemetery approves it, and both charge for it separately from the interment.
How long can we wait before burying the ashes?
No rule in Ontario or Quebec sets a deadline for burying ashes you've received. Many families keep them at home until spring, a family gathering, or until the plot's paperwork is sorted. Our guide to keeping ashes at home covers the practical side of that wait.
Whenever you're ready
Choosing to bury ashes in an existing family plot keeps generations together, and there's no rush to get every signature this week. Start with a call to the cemetery office; they handle these requests all the time.
If the cremation hasn't been arranged yet, a real person at Cleo answers 24/7, in English or French, and can walk you through it. We personally deliver the ashes to your home, and we stay on for months after to help with the paperwork and government death benefits.
(438) 817-1770