Deckadent Decking
“Communication through the whole project was excellent even when challenged with weather delays.”
Best Deck Builders in Newmarket, ON
15 companies listed · 5 in Newmarket · 1 open 24/7 · 12 open weekends · 11 rated 4.5+
Data verified October 21, 2026
Newmarket Fence
“Beautiful pine wood fence and gate installation, great customer service, professional crew and fair pricing.”
XP Decking Inc.
“Vlad was an absolute pleasure to deal with and went above and beyond to make sure this fence was built exactly how it should be.”
Deck Builder Newmarket
Deck Builders R.u.m
“M to anyone who is looking for the ultimate in professionalism and craftsmanship!”
Green Side Up Contracting Inc
“The work was grueling and temperatures soared, but the crew dug-in (literally) working long hard days, and somehow managing to maintain pleasant dispositions.”
Listed for homeowners in and around Newmarket, ON, these 15 companies build and repair decks, where footing depth and snow are part of every design. Listings reflect what each company publishes itself, and the ratings and comments are taken from public reviews.
Area overview: Newmarket, ON
5 of the 15 companies we list are based in Newmarket; the other 10 serve Newmarket from towns including Aurora (6 km), Bradford (11 km) and East Gwillimbury (10 km). 14 of the companies on this page have a rating, from 4.0 to 5.0 across 463 reviews; 1 has 50 or more reviews and 11 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise professionalism (98%), quality (92%) and responsiveness (83%). The topics that come up most in reviews of the companies on this page are "estimates" and "price". 1 is open around the clock; 12 are open on Saturdays and 4 on Sundays. The services the companies on this page list most often on their websites are decks (4), fences (3), deck builder (2), deck railings (2) and gazebos (2). 3 show a licence on their websites. Domain records put 3 websites of the companies on this page at ten or more years old; the oldest dates from 2012. 1 offers emergency call-outs; 10 give free estimates and 1 lists coupons or special offers. We count these figures across the companies on this page; distances are straight-line, and hours and prices change, so confirm the details with the company before you book.
What should I look for on a deck builder's site?
13 of the 15 deck builders on this page list a website. The pages worth reading are the ones showing framing and footings rather than furniture on finished boards. Photos of piles going in or a flashed ledger say more about the build than any gallery of summer evenings.
Diamond Decks Inc.
“Their finished product was better than we imagined and they were all so wonderful to deal with.”
Demex Decks
“Thanks Demex Decks, and Art for great experience to work on our last project.”
S.o.n.c.e Homes
“Further, Serge communicates great advice and provides creative options and recommendations to consider at every step in the process.”
A.maximum Construction Company
“The owner quickly addresses any concerns and provides all detailed information you need.”
Prime Decks
“He was quick to provide us with a competitive quote, answered email promptly, and built both within 5 days which was much faster than we had anticipated.”
Luxury Landscapes & Pool Designs in Toronto
“Kudos Ofer for the great work and organization, while some minor hiccups along the way due to rushing to move ahead with schedule which were immediately looked after or, material delays which as a construction guy myself I know they're normal in this type of construction in the busy summer time.”
GTA Sunrise Property Services LTD
“They were dedicated to the project for the whole duration and resolved any material shortages or need for extra material very swiftly despite the delays during COVID.”
The Refined Carpenter
“We were thrilled with the workmanship that was done - he clearly is good at what he does, and prides himself on providing excellent service, and even better results.”
Adiga Construction Decks and Fences
“I would recommend them to anybody who wants to get their fences done without hassle , on time and with the great quality.”
Why these companies made our list
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