What does deck building cost in Markham? Pressure treated deck construction runs $46 to $76 per square foot, cedar decking runs $60 to $95 per square foot, and composite decking or PVC decking runs $77 to $132 per square foot, depending on lot size, design complexity and site access. A standard 300 sq ft backyard deck usually lands between $18,500 and $35,500 fully installed. Heritage-area properties, like those around Unionville or Thornhill, sometimes carry added permit steps that we factor into the free quote.
Who are the best deck builders in Markham? Captain Handy is a licensed, insured deck contractor building custom decks across Markham’s full range of neighbourhoods — from the historic village cores of Unionville and Thornhill to master-planned communities like Cornell and Cathedraltown. We install pressure treated, cedar, composite and PVC decking (Trex, Fiberon, TimberTech) as backyard decks, elevated decks, rooftop decks and pool deck builds, typically completing deck installation in 2 to 4 weeks.
One City, Several Different Design Briefs
Markham is a tech-hub city with one of the most architecturally diverse housing stocks in the GTA, and that shapes how we approach every custom deck design here. In Unionville and Thornhill, older streets and heritage character mean we’re designing around mature trees, established grading and sometimes heritage guidelines. In newer, master-planned neighbourhoods like Cornell, lots are flatter and more uniform, giving homeowners more freedom for larger, multi-level layouts. A deck contractor who applies one template to all of Markham is going to get it wrong somewhere.
Decking Materials for Markham Homes
Pressure treated deck lumber is still the most common entry point for Markham homeowners — affordable, durable when maintained, and a safe default for a first deck build. Cedar decking is the natural upgrade, prized for its warmth and rot resistance, and it fits especially well against the wood-and-brick character found in Markham’s older village streets.
Composite decking and PVC decking (Trex, Fiberon, TimberTech) continue to grow in popularity across Markham’s newer subdivisions, where homeowners want a deck that survives Ontario’s freeze-thaw winters without annual staining. For larger estate lots, particularly around Cathedraltown and parts of Unionville, an ipe deck or premium trex deck delivers the dense, high-end finish those properties call for.
Backyard, Elevated, Rooftop and Pool Decks
Most of our Markham builds are a standard backyard deck connecting the house to the yard, but grade changes on some of the older, sloped lots near Unionville and Thornhill often call for an elevated deck instead. Rooftop deck requests come up on Markham’s newer high-density developments, particularly around the Markham Centre area, and require the structural review that rooftop loading demands. Markham also has a large number of backyard pools across both its established and newer neighbourhoods, keeping us busy as a pool deck builder — composite decking and PVC decking are our standard picks for pool surrounds because of their slip resistance and low maintenance.
Designing in 3D Before Anything Gets Built
Every custom deck design begins with a 3D deck design walkthrough, so Markham homeowners can see materials, colours and layout choices before we order any composite decking or cedar. In heritage-sensitive areas like Unionville’s village core, this also gives homeowners a clear visual reference to bring into permit or design review conversations.
Deck Permits Through the City of Markham
A deck permit is required for most new deck construction in Markham, issued through the City of Markham’s building standards department. Requirements shift with deck height, whether it’s attached to the house, and proximity to property lines — and properties within Unionville’s heritage conservation district may face additional design review. Captain Handy prepares drawings and manages the deck permit submission on every project, so homeowners aren’t left navigating City of Markham requirements alone.
Deck Renovation Across Markham’s Older Neighbourhoods
Deck renovation is a regular part of our Markham workload, especially in established areas where original pressure treated decks are now 20-plus years old. Soft boards, unstable railings and undersized footings are the most common issues we find on inspection. We’ll always be straightforward about whether a renovation solves the problem or whether a full rebuild is the better long-term investment.
Why Markham Homeowners Choose Captain Handy
We’re a licensed, WSIB-insured deck contractor with a consistent process across every neighbourhood we build in: site visit, 3D design, fixed written estimate, realistic schedule. As deck builders near me, we also serve the areas bordering Markham — Richmond Hill, Stouffville, Scarborough and the wider York Region — so properties near the city limits are never an issue.
Ready to start your Markham deck installation? Call (647) 830-4834, email [email protected], or request a free quote through our contact page. See our full range of custom decks work at captainhandy.ca/build-a-deck.html, or browse everything we do at captainhandy.ca. Our Google Maps Reviews!
FAQs About Deck Builders in Markham
How much does it cost to build a deck in Markham?
Most Markham deck projects fall between $18,500 and $35,500 for a standard 300 sq ft backyard deck, depending on material. Pressure treated construction sits at the lower end, while composite deck cost and PVC decking sit at the higher end. Captain Handy provides a fixed written quote after a site visit.
Do I need a permit to build a deck in Markham?
Yes, most new decks require a permit from the City of Markham, and properties within heritage conservation districts like Unionville may need additional design review. Captain Handy handles the drawings and permit submission as part of the project.
What’s the best decking material for Markham winters?
Composite decking and PVC decking handle freeze-thaw cycles with the least maintenance, while cedar decking offers a natural look that needs periodic sealing. Pressure treated wood is the most affordable option but requires more regular upkeep over time.
How long does it take to build a deck in Markham?
A standard backyard deck typically takes 1 to 4 weeks from approved design to completion, though heritage-area or sloped lots can take a bit longer due to design review and engineering. We give homeowners a realistic schedule before work starts.
