Citywide Post Hole Digging
“And really nice people, from the office all the way to the job site highly recommend it .”
Best Deck Builders near Thornhill, ON
3 of these companies are based in Thornhill; the others serve Thornhill from towns including Concord, North York and Mississauga.
4 open 24/7 · 20 open weekends · 23 rated 4.5+ · 2 show a licence
Data verified October 18, 2026
NUI Remodeling & Construction Thornhill.
“Thank you all for the quality of work you delivered and for completing my remodel in a timely fashion.”
Vinyl Decks Toronto
Super Decks Toronto
“Without asking we recieved a credit against our original quote due to less work being required on the existing subframe.”
Action Home Services
“The team at Action Home Services communicated with me throughout the entire process, keeping me updated on their progress and addressing any concerns that I had.”
Royal Innovation Deck Builder
“Communication before and during the project was perfect and my questions were alway addressed right away - even while EDAN was on vacation before the job start.”
Listed for homeowners in and around Thornhill, ON, these 24 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: Thornhill, ON
23 of the 24 companies on this page have a rating, from 4.6 to 5.0 across 2,837 reviews; 19 have 50 or more reviews. When customers rate these companies on specific qualities, they most often praise professionalism (93%), quality (85%) and responsiveness (77%). The topics that come up most in reviews of the companies on this page are "price", "estimates" and "efficient". 4 are open around the clock; 19 are open on Saturdays and 14 on Sundays. The services the companies on this page list most often on their websites are composite decks (3), decks (3), fence (3), interlocking driveway (3) and landscaping (3). 2 show a licence on their websites. 6 have ten or more years of experience, the longest 27 years. 4 offer emergency call-outs; 15 give free estimates and 5 are family- or locally-owned. We have a website on file for 23 of the companies on this page; 22 publish a contact page; 22 list a public email and 1 takes bookings online. We count these figures across the companies on this page; hours and prices change, so confirm the details with the company before you book.
Do these deck builders say they are licensed?
2 of the 24 companies on this page show a licence on their websites. Confirm it with the municipality that issues it, and ask who applies for the building permit and who meets the inspector at footing and framing stage. That responsibility belongs in the contract.
Joshua Tree Service
“Stuck to quoted price and very honest and hardworking group of guys”
Living Construction and Landscaping Inc
“Living construction did a whole make over of our backyard, which included rebuilding two retaining walls and a 12x25 deck and did the fence line of our property.”
Luke's Landscaping
“We had Luke and his team remove our old concrete pathway and install a new stone paver pathway as well as install a paver patio in our backyard.”
The Deck Master
“Lawrence and his team completed the job in 2 days, 35' x14' deck with railings and steps plus the 23' x14' pergola in 2 days.”
Top Quality Decks and Fences
“Quick to respond to repair 2 broken fence posts and reinstate the existing fence panel.”
Designer Deck Inc
“Very happy with the annual spring cleaning done a couple of weeks ago.”
Proper Construction Inc.
“Eddie and his team were punctual and did a really nice work digging and installing our posts.”
4ever Green Landscaping Services Ltd
“1000% They're very professional and do amazing work!”
Demex Decks
“Definitely recommend this company to anyone who is looking for quality at affordable rates”
A.maximum Construction
“Max and his team did a great job and we will definitely use them for our next backyard project.”
Deckcrew.ca
“I m totally satisfied and will hire you more in my upcoming project .”
Maple Exteriors INC
“He responded timely, provided a clear quote, and installed the railings on time.”
GTA Grizzly Landscaping and Interlocking Vaughan
“My neighbours and I all had our fence posts replaced by GTA Grizzly LTD.”
GTA Landscaping Vaughan
“Helped me with my property including fixing up my deck and doing an awesome job on the interlock in my front yard.”
Pashadeck Inc.
“The process was easy, the team was friendly and professional, and the quality is awesome.”
Zand Group Deck Builder
“Alex and him team were very professional The was done within time frame promised.”
Maximum Landscaping Services
“Excellent experience from start to finish.”
Artech Landscaping Ltd
“Andrei and his team listened to all of our needs and incorporated everything we wanted into our backyard.”
Why these companies made our list
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