Aztec Decks
“From start to finish, Dustin was awesome to work with and is very neat and organized :)”
Best Deck Builders near Oshawa, ON
3 of these companies are based in Oshawa; the others serve Oshawa from Bowmanville (13 km), Ajax (16 km) and Whitby (8 km).
1 open 24/7 · 10 open weekends · 13 rated 4.5+
Data verified October 18, 2026
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Cornerstone Construction
“Cornerstone construction is the very best, professional and experienced, I wanted someone I could trust, and they definitely delivered.”
Adbdecks
Buildingbybri Handyman & Tree Services
“Friendly, honest, hard worker gets the job done, clean and efficient took all branches with him did not leave a mess.”
Modern Decks & Vinyl Fences
“Professional, fast, already have answers for you if a problem should arise.”
DAP Contracting
“They showed up on time and finished within hours with great quality work.”
Listed for homeowners in and around Oshawa, 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: Oshawa, ON
The 15 companies on this page are rated from 4.0 to 5.0 across 426 reviews; 3 have 50 or more reviews and 13 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise professionalism (96%), quality (88%) and punctuality (78%). The topics that come up most in reviews of the companies on this page are "estimates", "price" and "efficient". 1 is open around the clock; 10 are open on Saturdays and 5 on Sundays. Domain records put 3 websites of the companies on this page at ten or more years old; the oldest dates from 2006. 1 offers emergency call-outs; 10 give free estimates; 4 are family- or locally-owned and 1 lists coupons or special offers. We have a website on file for all 15 of the companies on this page; 14 publish a contact page; 12 list a public email and 1 takes bookings online. 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.
Should the builder be based in my town?
3 of the 15 companies are listed in Oshawa, with the others within 20 km. Deck crews travel through a short season. Ask whether they regularly work with your municipality, since the permit process and the required footing depth are set locally and they slow down anyone unfamiliar with them.
Barkhouse Custom Designs
“Very easy to get a hold of, providing great helpful information and completed it on time in one day!”
Gray's Deck & Fence
“I was very impressed with Graham's professionalism, expertise, and attention to detail in replacing the steps leading to a porch.”
Affordable Decks
“The solution was explained clearly and they were able to come up with multiple solutions in terms of the repair.”
Connections Renovations
“At the start to the end of the project Joseph follow the dates that he had promised to delivery, specially because we had a time constraint due to a baby that was coming, Joseph also point out to us important solutions for the challenges that we were facing”
Discover Custom Decks and Fences
“Amazing attention to detail, very courteous and polite and excellent quality and communication from start to finish.”
Mr General Contractors & Renovations Durham
“Amazing people to work with no complains and genuinely great for Reno and more!”
Always Dolce
Bildam Home Improvements
“They offered suggestions on how to achieve what we wanted, did the work very professionally, cleaned up the work site every day and were willing to accomodate changes along the way.”
Deckplus Ltd
“The work was done in a day and a half and there was no mess left behind.”
Why these companies made our list
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