Custom Decks Built by Certified Pros in the GTA
Custom deck construction and repair — designed and built to last by one award-winning GTA crew. Wood and composite, engineered for Canadian winters.
- No Deposit Until Done
- Workmanship Warranty
- Licensed & Insured
- TrexPro Platinum Builder
Get Your Free Deck Quote
Tell us about your deck project. We'll reply within 24 hours — no obligation.
905-392-7123
🔒 No obligation. We respect your privacy.
Every deck we build comes standard with this
No upgrades needed. From the footings to the final railing, these are the things we never compromise on — so your deck looks great, stays safe, and lasts for decades.
Safety First
Solid, secure, and safe for everyone — built to code with premium fasteners and properly engineered railings and footings.
Budget-Friendly
The best result for the budget you're working with. Transparent, written pricing with no surprises — and no deposit until the job is done.
Stays Cool
Heat-mitigating composite technology keeps sunny decks comfortable underfoot all summer long.
Long-Lasting
Engineered and built to last decades without major issues — designed specifically for Ontario's freeze-thaw climate.
Low Maintenance
No constant staining, sanding, or repairs. Premium composite options mean more time enjoying your deck and less time maintaining it.
Fast & Easy Process
Your project completed quickly with minimal disruption to your home — most decks finished in 1–3 weeks.
Our Simple 3-Step Process
From first call to finished deck, we keep it clear and on schedule.
Request a Free Quote
Fill out the form or call us. It takes less than a minute to get started.
On-Site Assessment
We visit your property, discuss your vision, and provide a detailed written quote.
Build & Enjoy
Our team builds your dream deck on time. You relax and enjoy the result — and pay nothing until it's done.
Deck builds & restorations across the GTA
A look at some of our latest deck builds and restorations across Toronto. Click any photo to enlarge.
What homeowners say about their decks
Real 5-star Google reviews from Green Side Up deck customers across the GTA.
We recently hired Green Side Up Contracting Inc. to completely refurbish our side and back deck using Trex composite decking, and we couldn’t be happier with the results. This was a major project, and from start to finish, Jay and his crew demonstrated professionalism, craftsmanship, and attention to detail. The work was completed within the timeframe promised, and the quality of the finished product exceeded our expectations. One of the things we appreciated most was Jay’s communication throughout the entire process. He kept us informed every step of the way, promptly answered our questions, and ensured we were comfortable with all aspects of the project. The crew was courteous, hardworking, and took pride in their work. Our new deck has completely transformed our outdoor living space and will be something we enjoy for many years to come. We would not hesitate to recommend Green Side Up Contracting Inc. to anyone looking for a reliable and professional contractor for deck construction or renovation projects.
I recently had my backyard deck extended and built by Greenside Up Contracting and I couldn't be more pleased with the results. Jay and his team were very professional and very easy to work with. They provided suggestions on how to make the project better and safer than what I had originally envisioned. The quality of the work completed by Jamie and Mike is outstanding. These guys know their stuff. I was amazed at how they were able to join the new and old decks seemlessly together to give me one large deck platform. They arrived on time, kept the work area neat, cleaned up at the end of job and removed all materials and waste. I highly recommend them to anyone looking to upgrade their deck or build a new one.
We hired Green Side Up to replace our existing elevated deck (3.5 feet off the ground) with new composite decking, privacy fence, and glass railing. The quotation process was straight forward with itemized prices for each portion of the build. The back and forth discussion on various products and colors was seamless. They removed all old materials and hauled it away for us and made sure that the new structure had waterproofing to help the deck last longer. The workers were friendly and professional and their work quality was impeccable. The finished product looks amazing and we cannot wait to enjoy our outdoor escape for decades to come. Definitely recommend this company for your renovation needs.
20+ years building the GTA's outdoor spaces
More than 20 years ago, our founder Jay left a successful career to build something more meaningful — a company focused on craftsmanship, integrity, and customer care. What started as a small, owner-operated business has grown into one of the GTA's most trusted outdoor construction companies.
Today, Green Side Up Contracting is an award-winning, Landscape Ontario member and TrexPro® Platinum Contractor, known for high-quality work that's designed to last and built to protect your investment.
We believe in honest communication, transparent pricing, and standing behind our work — so you can feel confident your project will be done right the first time.
Ready to build your dream deck?
Free, no-obligation quote in the GTA. You pay nothing until the job is done.
Call 905-392-7123