Professional deck contractor Markham team delivering custom deck building, deck installation and deck repair across Markham — premium materials, expert craftsmanship and quality workmanship on every project.
Looking for a trusted deck contractor Markham homeowners can rely on with their dream deck? aMaximum Construction is a full-service deck company delivering custom deck design, deck installation, deck renovation and deck repair across Markham and the surrounding GTA. Every deck project we take on starts with listening to your priorities and finishes with a beautiful, structurally sound outdoor space that reflects your home's architecture.
Need matching railings? See our deck railing installation in Markham — same crew, same warranty.
Our skilled team of deck builders uses only the best materials, works closely with you through every design phase and delivers outstanding results from the first board to the final railing cap. With many years of experience building decks in Markham, we know how local weather conditions affect decking materials and how to plan a backyard project that lasts.
Every backyard is different. Our designers offer design services that work with your lot, your home's architecture and your personal style to create a custom design you'll love. From simple ground-level platforms to multi-level decks, larger layouts and rooftop decks, we shape every aspect of the plan around your specific needs and budget. Privacy screens, integrated lighting, pergolas, built-in benches and fire pits — attention to detail at every step.
Building decks is what we do every week. As a full-service deck contractor Markham residents call first, we handle deck installation, deck construction and full deck building from layout to finishing touches. Our construction process is supervised by a dedicated project manager, and our crews follow Ontario Building Code requirements so your new deck passes inspection without delays. The result is high-quality custom decks that perform for many years and protect your investment in your outdoor living space.
We work with a wide selection of composite materials, hardwoods and softwoods so you can pick what fits your priorities. Composite decking made from wood fibres and recycled plastic gives you a low maintenance surface backed by long warranties. Cedar offers a classic, rot resistant wood look at a friendlier price. Pressure treated lumber remains the most affordable framing option for wood decks. We'll walk you through the trade-offs and which finish materials perform best in our climate.
Already have an old deck? We provide deck repair, deck boards replacement, deck railings upgrades and structural fixes that bring your deck back to safe, comfortable condition. Our maintenance services keep every deck lasting longer and looking newer. If your existing deck is past saving, we'll explain why a rebuild makes more sense than another round of patches.
Markham Deck Services at a Glance
Why Markham Homeowners Choose Us
Deck Materials for Markham Climate
Markham's variable climate requires durable materials. We recommend:
Cedar: Natural resistance to rot and insects, beautiful aging
Composite: Weather-resistant, low maintenance, 25+ year lifespan
Pressure-Treated: Budget-friendly, treated for outdoor durability
Schedule a free consultation with our deck contractor Markham team and we'll plan your next deck project together.
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What sets our deck builders apart on every backyard project across Markham.
Every outdoor space is different. We tailor deck design to your lot, your home and how you actually use the yard — whether you entertain guests every weekend or just want a quiet morning coffee spot.
We stock and install composite decking, composite materials, cedar, ipe and pressure treated lumber. Each option is matched to your budget, climate exposure and long-term maintenance goals.
Square frames, level joists, hidden fasteners and clean board ends. Our deck construction follows the highest standards so your new deck looks sharp from day one and stays that way.
Every outdoor deck we build meets Ontario Building Code and the latest safety standards. Workmanship is backed by a written warranty, and we are happy to honour callbacks for future projects.
Markham homeowners regularly tell us we did an excellent job and an amazing job. Customer satisfaction is the metric we care about most — referrals are the lifeblood of our deck company.
Local patio builders and deck specialists who answer the phone, show up on time and finish the job. No subcontractor games, no excuses.
A clear construction process for every deck project from quote to handover.
We meet on site, measure the area and listen to your vision. We discuss decking materials, layout ideas, budget and timeline. No pressure, no hidden fees.
Our designers prepare a layout, material list and fixed-price quote. You see exactly what you're paying for and how the deck will sit on your property.
We pull building permits and handle deck building permits through the City of Markham so you don't have to chase paperwork.
We dig, pour concrete footings, set posts plumb and frame the structure. Solid foundations protect structural integrity for the life of the deck.
We install deck boards, deck railings, stairs, skirting and any extras like privacy screens or fire pits. Hidden fasteners and tight gaps as standard.
We walk you through every detail, hand over care tips and leave the jobsite cleaner than we found it. Then your new outdoor living space is ready to enjoy.
From Unionville to Cornell — markham decking services and surrounding areas.
Heritage homes deserve decks that respect the architecture. We design custom decks with classic detailing — wrapped fascia, mitred corners, scenic views off the back porch.
New-build neighbourhoods love our composite decking packages — clean lines, modern colour palettes and long-warranty finish materials that handle Markham summers.
Tight lots, walkout basements, sloped yards — our multi-level decks open up tricky terrain and create a useful outdoor living area without overpowering the yard.
Modern builds with great scenic views. We frame the views with glass railings and large open decks designed to entertain guests and host family weekends.
Replacing an old deck? We rebuild on stronger framing, switch to low-maintenance boards and add features your old deck never had — built-in benches, lighting, planters.
Local deck companies and deck contractors serving every neighbourhood across Markham, plus easy reach into Richmond Hill, Vaughan, Stouffville and North York.
We source quality materials and tools from leading construction retailers across Canada & North America.
Deck building costs in Markham typically range from $8,000 to $35,000+, depending on size, materials, and design complexity. Pressure-treated wood is the most affordable option, while composite decking costs more upfront but requires less maintenance. We provide detailed written quotes so you know exactly what you're paying for.
In most municipalities including Markham, a building permit is required for decks higher than 24 inches (60 cm) from the ground, or attached to the house. Our team handles the permit process and ensures your deck is code-compliant from start to finish.
For Markham's freeze-thaw climate, composite decking (Trex, TimberTech) performs best — it won't warp, crack, or splinter. Pressure-treated cedar is a great natural wood option with good rot resistance. We'll recommend the right material based on your budget, usage, and aesthetic goals.
A standard deck in Markham takes 1–2 weeks from permit approval to final inspection. Larger, multi-level decks or those with custom railings and stairs may take 2–4 weeks. We provide a clear timeline before work begins.
Composite decking is made from wood fibres and recycled plastic — it's low-maintenance, doesn't splinter, and carries long warranties (25+ years). Pressure-treated wood costs less upfront but requires sealing, staining, and regular maintenance. Both are strong choices depending on your priorities.
A well-built deck in Markham can last 15–30+ years depending on materials and maintenance. Composite decks with proper installation typically last 25–30 years. Pressure-treated wood lasts 15–20 years with regular maintenance. Our workmanship warranty covers the structural build.
Yes. Attached decks are ledger-mounted to the house structure using flashing and hardware designed for Markham's climate conditions. Proper ledger attachment is critical — it must meet Ontario Building Code requirements to ensure safety and prevent moisture infiltration.
We offer aluminum, glass, composite, cable, and wood railing systems. Glass and cable railings maximize views, aluminum is low-maintenance, and wood matches traditional deck aesthetics. All railings are installed to OBC height and load requirements.
Yes. We assess existing decks in Markham for structural integrity, rotted boards, loose connections, and safety issues. We can repair specific sections or do a full replacement — whichever makes more financial sense for your situation.
Composite decks need only occasional cleaning with soap and water. Wood decks should be cleaned, inspected, and re-sealed or stained every 2–3 years. Keep leaves and debris off the surface, ensure drainage isn't blocked, and check fasteners annually.