Fence Survey Ontario: When You Need One Before Building a Fence

So you’re finally putting up that fence. Maybe your dog keeps escaping, maybe the neighbours just moved in and things feel a little too open, or maybe you’re just tired of staring at an unfinished backyard. Whatever the reason, before you call a contractor or start digging post holes, there’s one step a lot of homeowners in the GTA skip and it’s the one that ends up saving them the most headaches: a fence survey.

If you’ve never heard of one, don’t worry. It’s simpler than it sounds, and once you understand why it matters, you’ll probably want one before your neighbour even notices the new posts going in.

What Is a Fence Survey?

A fence survey is exactly what it sounds like a licensed surveyor comes out to your property and marks the exact legal boundary lines, usually with stakes or pins, so you know precisely where your property ends and your neighbour’s begins. It’s different from just eyeballing where the old fence used to be or trusting whatever the previous owner told you.

In Ontario, property lines aren’t always where people assume they are. Old fences shift over decades, landscaping changes, and sometimes a fence that’s stood for 20 years was never actually on the correct line to begin with.

Why You’d Need One Before Building a Fence

Here’s where it actually matters in real life, not just on paper:

You avoid boundary disputes. This is the big one. If you build a fence a foot or two onto your neighbour’s property even by accident  you could be asked to move it, or worse, end up in a legal dispute over it. A survey settles the question before it becomes a problem.

Many municipalities require it. Several cities and townships across the GTA ask for proof of property lines before approving a fence permit, especially for taller fences or ones near shared lot lines.

It protects your investment. Fencing isn’t cheap. The last thing you want is to pay for materials and labour, only to find out later you need to tear it down and move it because it wasn’t on your property.

It prevents “who owns this strip of land” arguments. These disputes happen more often than people expect, especially in older neighbourhoods where fences have been replaced multiple times without anyone re-checking the actual boundary.

What Happens During a Fence Survey

A licensed surveyor will typically:

1. Research the legal property boundaries using existing survey records and land registry documents
2. Visit the property and locate or re-establish the boundary corners
3. Mark the property line clearly, often with stakes, pins, or paint
4. Provide documentation you can keep on file or show a contractor, permit office, or neighbour if needed

The process is usually quicker than people expect, and it removes all the guesswork before construction starts.

Do You Always Need One?

Not necessarily for every fence  a small decorative fence well within your own yard might not require a formal survey. But if you’re:

• Building along a shared property line
• Replacing an old fence and unsure of its original placement
• Dealing with a disagreement (or potential disagreement) with a neighbour
• Required by your municipality to show proof of boundary
• Building a fence for a newly purchased property with no recent survey on file

it’s worth getting one done before the first post goes in the ground.

Getting a Fence Survey Done in the GTA

At AKM Surveys, we handle fence surveys across the Greater Toronto Area, working with homeowners, contractors, and property owners who want to build with confidence instead of guessing where the line actually is. Our team locates and marks your property boundaries clearly, so your fence goes up in the right place the first time — no disputes, no re-dos, no awkward conversations with the neighbours.

If your property hasn’t been surveyed recently, or you’re not sure where your last survey is, it’s also worth reading our guide on how to find an existing survey for your property in Ontario sometimes the boundary information already exists and just needs to be located.

A fence is supposed to bring peace of mind, not start a dispute with the people next door. If you’re not sure where your property line actually falls, it’s worth having it confirmed before the first post goes in the ground rather than after. If you’d like a licensed surveyor to take a look at your property, you can reach out to AKM Surveys or call 647-914-3361 to ask a few questions first.