… Drawing the Line: Why You May Need a Land Survey
Buying, selling, or upgrading a home is one of those times when small details can make or break the experience. You can renovate kitchens, paint walls, and swap out windows—but none of it matters much if you don’t actually know where your land ends and your neighbour’s begins. That’s where a land survey steps in. It’s the unsung hero of smart property ownership—a document that can quietly protect your investment, prevent disputes, and give everyone peace of mind.
In this article, I’ll walk you through:
What a land survey is and what’s involved
How much it costs and what affects the price
Doesn’t your realtor already have this information?
Who owns the survey and what you must disclose
How realtors and homeowners can use this knowledge
What Is a Land Survey Really
A land survey is more than just a fancy map—it’s a legal document created by a licensed land surveyor that defines the exact boundaries of your property. It shows where your land starts, where it ends, and what’s sitting on it: fences, sheds, driveways, easements, and sometimes even encroachments from neighbours.
Here’s what’s typically involved:
- The surveyor reviews your title documents, property description, and any previous surveys.
- They conduct on-site measurements using GPS or total station equipment, locating boundary markers or setting new ones.
- They create a Plan of Survey—a detailed drawing showing boundaries, dimensions, and any structures, features, or easements.
- They provide you with a legal record of your land’s true footprint, complete with physical markers or metal pins placed at property corners.
It’s like getting an X-ray of your property—once you’ve seen it, you can’t unsee it, and you’ll know exactly what’s going on beneath the surface.
When You Might Need a Land Survey
There are plenty of moments in homeownership where a survey becomes more than just “nice to have.” Here are some of the most common situations where you’ll want one:
- Building or replacing a fence: Ensures the fence sits squarely on your land, not your neighbour’s.
- Buying or selling a home: Confirms boundaries and prevents title issues at closing.
- Adding an extension, deck, or laneway home: Helps satisfy municipal setback and zoning requirements.
- Resolving neighbour disputes: When two homeowners disagree about where the line lies, a survey ends the argument fast.
- Refinancing or obtaining a construction mortgage: Lenders sometimes require an updated survey before approving funds.
- Purchasing vacant land or rural property: Critical for defining lot lines, easements, and rights of way.
- Before subdividing or severing land: Legally necessary to map out the new parcels.
If you’re not sure whether you need one, ask yourself: “Would I want to know, for sure, where my land starts and stops?” The answer almost always leans toward yes.
How Much It Costs (and What You’re Paying For)
Surveys vary in price because every property tells a different story. For a typical residential lot in Ontario, you’re looking at roughly $1,800 to $3,000 for a boundary survey. Larger or more complex properties can climb to $4,000–$6,000, especially if the land is irregular or heavily treed.
Here’s what goes into that cost:
- Research time: Locating old records and legal descriptions.
- Fieldwork: Physically measuring and marking property boundaries.
- Drafting: Creating the official survey plan.
- Registration: Filing the document, if required, with the land registry office.
A simple suburban lot might take a day or two, while rural or older properties can stretch to several days.
Doesn’t Your Realtor Already Have This Information?
This is one of the most common—and most misunderstood—questions homeowners ask. The short answer? Not usually.
Your realtor may have access to some property information through MLS listings or municipal records—like lot dimensions from public data or an old survey provided by a previous owner. But those documents are often outdated, approximate, or not legally reliable.
In most cases, realtors don’t keep or produce official surveys because they’re the legal property of whoever paid for them at the time. If a previous owner did a survey but never gave permission for it to be reused, your realtor can’t just hand it over or rely on it for legal purposes.
That’s why buyers, sellers, and homeowners are encouraged to commission their own surveys when accuracy matters. Realtors can certainly recommend a trusted surveyor, but it’s up to you—the property owner—to obtain and own the current, legal version.
Who Owns the Survey (and What You’re Obligated to Share)
Here’s something many homeowners don’t realize: the person who pays for the land survey owns it—not the property itself. That means if you hire a surveyor, the survey is your intellectual property. You have the right to decide who sees it and how it’s used.
That said, there are a few caveats:
- Lenders and lawyers: If you order a survey for a mortgage or sale, you’ll usually be expected to share it with your lender, lawyer, or buyer as part of the transaction.
- Disclosure obligations: If you discover something significant—like an encroachment, easement, or structural overstep—you may have a duty to disclose it if you’re selling your home. Concealing a material defect could create legal issues later.
- Neighbour disputes: You’re not required to hand over the survey, but if a dispute escalates, it may be subpoenaed or referenced legally.
Think of it this way: a survey is your asset and your evidence. Use it wisely, but don’t hide something that could come back to haunt you during a sale.
A Real-World Story: The Case of the Sideways Shed
A client of mine—let’s call her Karen—was thrilled to buy her first home. A few months after moving in, her neighbour mentioned offhand that her shed “might be on their property line.” Karen brushed it off, assuming the fence marked the boundary.
When she later applied for a refinance, the lender required a land survey. Sure enough, the shed was built two feet over the neighbour’s property line. It wasn’t malicious—just a decades-old error—but it meant she had to either move the shed or reach a legal agreement.
It cost about $2,000 for the survey and another $500 to adjust the fence line, but that little investment saved her a potential legal nightmare down the road.
How Realtors and Clients Can Use This Knowledge
For realtors, surveys are an incredible trust-building tool. Imagine showing a listing where the seller can confidently hand over a recent survey—buyers love that level of transparency. It reassures them there are no surprises hiding behind the hedge.
For homeowners, it’s about protection and planning. Whether you’re replacing a fence, applying for a permit, or refinancing, knowing your boundaries keeps projects smooth and relationships civil.
And for buyers, it’s a due diligence essential. A survey reveals hidden easements, encroachments, or odd lot lines that could affect how they use the property. It’s a small cost for a huge dose of clarity.
Allen’s Final Thoughts
A land survey may not have the glamour of a kitchen renovation, but it’s one of the smartest investments a homeowner can make. It defines ownership, protects against disputes, and gives you a blueprint for every future project.
And remember—knowledge carries responsibility. If your survey uncovers an issue, it’s better to deal with it head-on than let it surface later. Full disclosure and proper documentation always pay off in the long run.
As a mortgage agent, I help clients look beyond rates and approvals to see the bigger financial picture. Whether you’re buying, refinancing, or improving your property, I can guide you on when a survey makes sense, how it affects your financing, and where to find a trusted local surveyor. I can even help you structure your financing so you can cover these due-diligence costs comfortably.
Because sometimes, drawing the line isn’t just about boundaries—it’s about building confidence, protecting your investment, and making sure every part of your property story adds up the way it should.

