We are a trusted deck builder in Toronto, Richmond Hill, Markham, and other nearby areas.

Building a deck can be an exciting way to upgrade your backyard, but it can quickly become stressful if you’re not sure where your property line actually sits.

In Markham, we’ve seen plenty of homeowners get halfway through their deck build, only for a neighbour to point out the structure crosses onto their land. That’s when things get messy: legal battles, forced removals, and sometimes, a neighbourly relationship that never quite recovers.

A property survey done by a licensed land surveyor before you start building pins down exactly where your property boundaries are, saving you from headaches and keeping your deck on your own land. This simple step gives you peace of mind and shows your neighbours you respect their space—a small gesture that can mean a lot.

Boundary disputes? Honestly, they’re almost always avoidable. If you take a little time to understand how surveys work and get the right info before you start, you’ll dodge a lot of stress, not to mention the cost of fixing mistakes later.

Key Takeaways

• Get a professional property survey before building to avoid disputes and protect your investment
• Licensed land surveyors give you accurate, legal documentation of your property lines
• Proactive steps—like surveying and talking with neighbours—save time, money, and neighbourhood harmony

Why Property Surveys Matter Before Building a Deck

A property survey before building a deck shields you from boundary headaches, makes it clear where you can build, and can save you a ton of money and stress.

Avoiding Encroachments and Boundary Disputes

An encroachment is when your deck crosses onto your neighbour’s property. We’ve seen homeowners forced to tear down beautiful decks just because they were a few inches over the line. A boundary survey by a licensed land surveyor shows you exactly where your land ends and your neighbour’s begins.

People often think they know their boundaries based on old fences or what someone told them years ago. Honestly, that’s risky. Fences are often in the wrong spot, and hearsay isn’t going to hold up if things go to court.

A land survey gives you documented proof of your property lines. Your neighbour can challenge any structure that crosses onto their land, even years after you build it. The survey is your evidence if things get legal.

Clarifying Property Lines for Deck Placement

Property lines aren’t always where you expect. We need solid measurements before designing your deck because Markham’s local bylaws require certain setbacks from the boundary. If you guess wrong, you could end up redesigning or moving your whole project.

A surveyor marks your property corners and creates a certified plan showing distances and angles. This way, we can place your deck in the right spot from the beginning.

Surveys also show easements—like where the city or utility companies have rights to access parts of your land. Knowing about these before you pour footings saves time and headaches.

Preventing Costly Legal Headaches

If your deck encroaches on neighbouring property, you could face lawsuits or be forced to remove the structure. We’ve seen homeowners spend thousands fighting disputes that a $1,500 survey could’ve prevented. Courts usually side with whoever owns the land that’s been encroached upon, whether you meant to or not.

A property survey protects both you and your neighbour. This documentation is also helpful if you ever sell your home—buyers and their lawyers will want proof that everything sits within legal boundaries.

Most building permits require a current survey before they’ll even look at your application. If you skip this, your permit may be denied and construction stalls before it even starts.

Understanding Property Boundaries in Markham

Property boundaries mark where your land ends and your neighbour’s begins. Knowing these lines is a must before building a deck. Survey plans, property deeds, and physical markers all help show where you can build without crossing onto someone else’s land.

Reading Survey Plans and Property Deeds

Your property deed is the legal document that spells out what land you own, using measurements and reference points. But unless you’re used to surveying terms, it can be a bit of a puzzle.

A survey plan is a detailed map from a licensed land surveyor. It shows your boundaries with precise measurements and marks things like buildings, fences, and easements. Deciphering these symbols isn’t always straightforward, but they’re crucial.

We always suggest getting a current survey plan before starting a deck. Old plans might not reflect changes over the years. Your deed and survey plan together give you the real picture of your land’s boundaries in Markham.

Identifying Boundary Markers and Survey Pegs

Boundary markers are physical objects—iron bars, wooden stakes, concrete monuments, or survey pegs—that surveyors place to show where your property lines are. They’re usually at the corners.

Survey pegs are temporary, often wood or metal with coloured tape. Sometimes, these markers get buried or lost.

If you can’t find your boundary markers, don’t just guess. Too many disputes start because someone assumed they knew where the line was. A licensed Ontario Land Surveyor can find your original markers or set new ones if needed.

What Boundary Surveys Show

A boundary survey gives you the full picture of your property’s limits and any restrictions that could affect your deck. The survey shows exactly where your property lines are, measured from fixed points. It also identifies any encroachments—structures crossing the line.

Surveys reveal easements too. These are areas where utility companies or neighbours have legal rights to access your property, which might limit where you can build. Setback requirements from zoning laws usually show up on surveys as well.

We use these documents to make sure your new deck stays clear of problems with neighbours or legal restrictions.

How Professional Land Surveyors Help Prevent Disputes

Licensed land surveyors bring technical skill and legal know-how to set exact property lines before you build. Their precise measurements and official documents create a record that protects you and your neighbours from future headaches.

Licensed Land Surveyors and Their Role

When we talk about hiring a licensed land surveyor, we mean professionals with years of training and credentials from Professional Surveyors Canada. These aren’t just folks with tape measures—licensed surveyors follow legal and ethical standards, so their work stands up in court if it comes to that.

A surveyor researches your property’s legal description, checks old surveys, and reviews municipal records. They dig into historical deeds and land grants to figure out how your property lines were set. This matters, especially in older Markham neighbourhoods where records might not agree.

Surveyors work as neutral third parties. They’re not on your side or your neighbour’s—they’re on the side of accuracy. That helps if anyone questions your deck’s placement later.

Surveying Techniques and Tools

Surveyors use equipment that’s way more advanced than a basic tape measure. The total station is their main tool—it combines electronic distance and angle measurements to find property corners with impressive precision.

They also use GPS and laser scanners for larger spaces. These tools gather data that surveyors process with special software to make accurate site maps. Then they place or check property markers—usually iron bars or concrete monuments—at the corners.

Depending on your lot and how clear the markers are, the process can take a few hours or a whole day. Surveyors measure from known points and double-check their work against your deed.

Survey Reports and Documentation

The survey report you get is a legal document showing exactly where your property lines fall. It includes a detailed map, measurements, existing structures, and marked boundaries. We always ask clients to get this before we finalize deck placement.

Your survey report will show:

• Property dimensions and area
• Location of boundary markers
• Setback requirements
• Existing structures and distances from boundaries
• Easements or rights-of-way

If your neighbour ever questions your deck’s location, the survey provides proof you built within your legal boundaries. Keep the original report with your property records; you’ll need it for insurance, selling, or permits.

Common Causes of Deck-Related Boundary Issues

Deck projects can stir up trouble when they cross property lines or affect shared access. Most disputes start with decks built too close to boundaries, old encroachments that complicate things, or forgotten easements that limit where you can build.

Fences, Sheds, and Illegal Extensions

Decks often hit snags because homeowners don’t consider existing structures near the property line. If you build a deck that stretches past your boundary—even a few inches—that’s an encroachment.

Fences are tricky; they’re not always on the true property line. Many people assume the fence is the line, but it might be a foot or two off. Building up to a fence without checking the survey could mean you’re actually on your neighbour’s land.

Sheds and other outbuildings cause similar headaches. If there’s already a shed near the line, your new deck might break setback rules or cross over. We always check every structure’s location before locking in deck plans.

Common encroachments:

• Deck footings crossing the line
• Overhanging railings or privacy screens
• Stairs extending into the neighbour’s yard
• Built-in planters or benches over boundaries

Adverse Possession and Prescriptive Easements

Adverse possession is when someone can claim land they’ve used openly for years. In Ontario, that’s usually 10 years of continuous, obvious use without permission.

Say your neighbour built a deck that extends two feet onto your property 12 years ago. If they’ve maintained it and acted like it was theirs, they might have a claim to that strip through adverse possession.

Prescriptive easements are similar but grant usage rights, not ownership. If your neighbour’s always walked across a corner of your yard to reach their backyard, they might have a right of way now. This matters when planning a deck—you can’t block an established path.

We always suggest getting a current survey before building. It helps you avoid making claims you shouldn’t and protects land you didn’t know was at risk.

Rights of Way and Easement Surprises

Easements are legal rights that let someone use part of your property for a specific purpose. They don’t transfer ownership but do limit what you can build. Rights of way are a type of easement for passage across your land.

Your property might have utility easements for hydro lines, water pipes, or sewer access. Building a deck over these can violate the terms and force you to move or remove the structure. We’ve seen people spend thousands on a deck, only to tear it down when the utility company needs access.

Shared driveways and walkway easements are common in Markham. Your neighbour might have a right to cross your property to get to their garage or backyard. Blocking this with a deck creates instant legal trouble.

Key easement types affecting decks:

• Utility access (hydro, gas, water)
• Drainage easements
• Pedestrian rights of way
• Shared access agreements

Check your property’s title documents before you start building. They’ll list any registered easements and restrictions.

Steps to Take Before Building Your Deck

Building a deck without prep can lead to costly mistakes and neighbour disputes. Before you get started, confirm your boundaries with a survey, secure permits, and talk to your neighbours about your plans.

Confirming Boundaries With a Survey

Before you even think about breaking ground on a deck, get a current survey plan. It’s the only way to truly know where your property lines are, and it saves you from accidentally building on your neighbour’s land or running afoul of setback rules.

The survey plan lays out exact measurements from your property lines to any structures already in place. You’ll need this to figure out where you can legally put your deck. In Markham, setback requirements shift depending on your lot size and zoning, so there’s no universal answer.

Honestly, skipping the survey can be a pricey mistake. If you build too close to a property line, you might have to tear down or move part of your deck. We’ve seen folks have to shell out thousands for corrections just because they tried to save on that initial step.

Your survey should include:

• Exact property line locations
• Distances from buildings to boundaries
• Easements or right-of-ways
• Utility locations

Getting the Right Permits

You’ll need a building permit from the City of Markham before you start construction. Permits make sure your deck follows local codes and zoning laws, keeping you out of trouble and your project above board.

When you apply, you have to submit a site plan showing where you want the deck in relation to your house and property lines. That survey plan? Absolutely necessary. You’ll also need construction drawings with measurements, materials, and structural details.

Permit reviews usually take a few weeks, so plan for that. Don’t be tempted to skip this step—it’s not worth the risk. Building without a permit can mean fines, forced removal, and headaches if you ever want to sell your house.

Discussing Plans With Your Neighbours

Have a chat with your neighbours before you start building. It’s just good manners and can head off problems.

Show them your deck plans and let them know what to expect—timeline, possible noise, any temporary disruptions. If your deck is going to be raised, talk about privacy and maybe offer to add some screening.

Sometimes neighbours bring up things you didn’t think of, like drainage quirks or shared fences. Sorting these out early can save you a lot of grief.

Resolving Disputes if They Arise

Even with careful planning, sometimes deck disputes pop up. If that happens, talking things through early can prevent them from blowing up, but sometimes you’ll need outside help.

Informal Talks and Communication

Start with a direct chat. Most disputes come from simple misunderstandings that a conversation can clear up.

Bring your survey and permit documents to show where your deck sits relative to the boundary. A lot of people don’t realize where property lines actually fall until they see it on paper.

Keep things friendly and focus on solutions. If they’re worried about privacy, suggest adding a lattice or some shrubs. Small compromises can save you months of stress.

Write down what you discussed. Send a follow-up email summarizing any agreements. That way, you’ve got a record if things get complicated.

Mediation and Alternative Dispute Resolution

If talking doesn’t work, mediation is a good next step before heading to court. A neutral mediator helps both sides find middle ground without legal drama.

There’s also arbitration and negotiation sessions. These options cost less than court and usually keep relationships from getting too sour.

In arbitration, you both present your side, and the arbitrator gives a binding decision. It’s useful if you want a clear answer but don’t want to pay court fees. Your survey will be key evidence.

Mediation and negotiation give you more control over the outcome. The mediator doesn’t decide for you, just helps keep the conversation productive. Markham has community mediation services that can help with property disputes.

Going to Court and Expert Testimony

Court is the last resort when nothing else works or if someone refuses to participate in mediation. You’ll need solid evidence, and your survey is your best bet.

Land surveyors often testify in these cases. They explain how they did the survey and what the legal descriptions mean. Their neutral, professional input can be pretty convincing.

Sometimes, just showing the judge a proper survey settles things right away. The surveyor’s credentials and detailed measurements are hard to dispute.

Legal costs stack up fast, so court isn’t ideal. But if your neighbour’s deck is clearly on your land and they won’t budge, litigation might be the only way to protect your property rights.

Frequently Asked Questions

People have a lot of questions about surveys and building decks. Here are some of the ones we hear most in Markham.

What steps should I take before building a deck to ensure it’s within my property boundaries?

Start with a current property survey. It’ll show you exactly where your boundaries are and help you figure out how close you can build.

Check your title deed and any old surveys you got when you bought the place. Sometimes those are good enough, but older surveys can be off.

Call the City of Markham about setback requirements. These rules tell you how far your deck needs to be from the property line. Honestly, it’s safest to keep your deck a few feet inside the line, just to avoid any grey areas.

How can I find out if I need a surveyor before constructing a deck in Markham?

If you’re building near a property line or you’re not sure where the line is, hire a licensed surveyor. Most deck projects benefit from a survey, especially if the deck will be permanent or attached to your house.

If neighbours have concerns or if there were any handshake agreements about boundaries in the past, get a professional survey. It’s way easier to sort things out now than after you’ve built something.

If you’re planning a large deck or one that goes close to your lot’s edge, don’t skip the survey. The cost is nothing compared to moving a deck later.

Can you explain how a precise property survey may help avoid disputes with my neighbours over deck placement?

A professional survey gives everyone clear facts. No more guessing or arguing—just measured boundaries.

Surveyors use legal docs, old records, and their own equipment to figure out where your property starts and ends. They put stakes or pins in the ground so you can see it for yourself.

If a dispute comes up, a recent survey from a licensed pro carries weight. Their neutral analysis protects both sides by establishing facts, not opinions.

What are Markham’s regulations regarding deck construction and property lines?

Markham requires setbacks from property lines for decks. Usually, these range from 0.6 to 1.2 metres, but it depends on your property and zone.

You’ll need a building permit for most decks. The city wants a site plan that shows your boundaries and where your deck will sit.

There are also rules about how much of your lot you can cover with structures, and your deck counts in that calculation. Best bet? Call the Building Division at City Hall to get the specifics before you finalize your plans.

How often do I need to get a property survey when planning to build a deck near my property’s edge?

One current survey is enough for your project. If you have a survey from the last few years and there haven’t been changes to your boundaries, you’re probably fine.

If your last survey is over ten years old or if neighbouring properties have changed, get a new one. Boundaries can shift with erosion, new landmarks, or municipal updates.

If you’ve never had a survey since buying your home, now’s a good time. Relying on old or vague documents can cause big headaches if you build too close to the line.

Is there a way to resolve a boundary dispute with my neighbour without legal action, perhaps using a recent survey?

Absolutely, most of these disputes don’t need to end up in court. Try starting with a straightforward, honest chat with your neighbour—maybe over a cup of tea if you’re feeling optimistic. Share your survey results openly. A licensed surveyor’s findings carry some weight since they’re neutral and, frankly, just doing their job.

If your neighbour isn’t convinced by the survey, ask the surveyor to do a stakeout and physically mark where the boundary falls. There’s something about seeing a line in the dirt that makes things clearer. Surveyors use their gear and dig through old records to figure out exactly where the property line sits.

You could also bring the surveyor in for a face-to-face meeting with both of you. Sometimes it helps to have a third party explain the technical stuff and smooth things over. They’re often pretty good at breaking the tension and making the whole thing feel less adversarial.

In some situations, neighbours decide to tweak the boundary a little with a legal adjustment. Sure, there’s paperwork, but it can be a friendly fix that keeps everyone on good terms.