Design & Build Custom Decks

Create the backyard of your dreams

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Deck Building Services For a Functional Outdoor Living Space

We’re professionally building decks in Toronto and Greater Toronto Area: any types, any complexity, any kind of materials (PVC, composite, wood). Let’s explore the GMM’s distinctions together!


Need a new deck? You can choose deck size, kind of deck surface and deck design. The GMM crew will make it for you. Very low maintenance guaranteed! Just relax and enjoy your renewed backyard.


Elevate your outdoor living experience with a stunning pool house or cabana designed specifically for you, your family, and your guests. Expert craftsmen work closely with your vision to create a custom design that seamlessly integrates with your existing residential or commercial property.

With our accessory structures, you can bring the comfort of indoor living to your outdoor oasis, making it an inviting and functional space all year round. From traditional to modern, we will help you create your dream poolside retreat that’s sure to impress.


Elevate your backyard into an inviting outdoor oasis by incorporating a stunning, shaded area for relaxed conversations and gatherings. Expertly crafted designs provide the perfect blend of style and functionality, ensuring that your new cozy space is both beautiful and practical. Let the deck contractor GMM transform your backyard into the perfect spot for entertaining, relaxation, and making lasting memories.


A pergola is a versatile outdoor structure that enhances the beauty and functionality of your backyard. It comes in various designs and materials, providing shade and adding privacy. It’s perfect for entertaining and can be used for gardening. Additionally, a pergola increases property value. Contact GMM Decks for a custom pergola.


A shed in Toronto is a useful addition to your backyard. It provides storage space for tools and outdoor equipment. It can also be converted into a workspace, a playhouse for kids, an entertainment area, or a guesthouse. A shed offers versatility and customization options.

Design & Build Custom Decks in and around Toronto GTA

If you want to hire a professional deck builder in Toronto, we’re your crew! How to build your dream deck with us:

#1: On-site Consultation

A meeting with client on the site to discuss custom deck design goals, materials, timeline, and budget.

#2: Design Phase

As a deck builder we will create a 3D rendering of the custom deck (deck project) based on the client’s preferences and budget.

#3: Permitting

The deck builder will obtain the necessary permits from the local authorities to begin the construction process.

#4: Material Selection

The deck contractor will help the client choose the best materials for composite decking based on their preferences and budget. This includes the selection of decking, railings, stairs, and any additional features.

#5: Preparation

The site will be prepared by clearing the area, leveling the ground, and setting the posts.

#6: Framing

Deck builders will install the frame of the deck using pressure-treated lumber, which forms the structural base of the composite decks.

#7: Decking

The chosen decking material will be installed on top of the frame, using screws or hidden fasteners.

#8: Railing and Stairs

If included in the design, the deck builder will install railings and stairs according to the design and safety requirements.

#9: Finishing Touches

Any additional features such as lighting, planters, or benches will be added.

#10: Final Inspection

A final inspection will be conducted by the local authorities to ensure that the deck meets all safety and building codes.

#11: Handover

The deck builder will present the finished deck to the client and ensure that they are satisfied with the final product.

Please note that the exact process may vary depending on the specific project and location.

Our Projects

PVC-Composite Deck

PVC-Composite Decks

IPE Decks

Cedar-Pressure Treated Deck

Cedar-Pressure Treated Decks

Pool Cabana

Our advantages

Manufacturing speed

We are building really fast! You will get an outdoor space of your dreams as soon as possible.

Professional approach

GMM team of skilled professionals has the knowledge and expertise to design and construct custom decks for all types of homes.

Quality assurance

You can trust our builders to deliver a durable and long-lasting outdoor living space that you and your family will enjoy for years to come.

Affordable prices

Working directly with material suppliers, we ensure that our customers receive loyal prices.

The Best Deck Builders Toronto: Transform Your Backyard With GMM

Dreaming about a cozy outdoor living space? We can help. GMM DECKS is the most professional deck builder in Toronto and Greater Toronto Area (GTA). Whether you’re looking for a custom deck design, a complete deck construction project, a deck repair, or a renovation, we have inspiration, expertise and skills to get the job done right. From concept to completion: your vision, our craftsmanship!

What do we guarantee, as a deck builder?

  • Quality for your comfort living — at GMM Decks, we put quality first. Deck builders use only the best materials and proven methods to ensure that your Toronto deck is built to last.
  • Customization — each home and outdoor area is distinct, which is why we offer personalized deck solutions that are tailored to your specific requirements.
  • Service. Need a composite deck? At our deck building company, we take pride in delivering exceptional customer service from start to finish. We understand that communication is key to a successful project, which is why we work closely with you every step of the way. From the initial consultation to the final inspection, we are committed to ensuring that your deck is built to the highest standards of quality and meets your unique needs and expectations.
  • Expertise. Our team of skilled professionals boasts years of experience in the deck building industry, giving us the knowledge and expertise to design and construct custom decks for all types of homes in the GTA. We keep up with the latest trends and technologies to ensure that your deck not only looks great, but is also highly functional and efficient.

Deck contractors GMM DECKS are a team of skilled builders equipped to bring your deck vision to life, from expert design services to stunning add-ons and structures. With years of experience in the deck building industry, we have the expertise and knowledge to turn your imagination into reality. Whether you’re looking for a simple deck renovation or a complex addition, our builders are prepared to take on any project and exceed your expectations. Let us help you create the deck of your dreams!

The Best Toronto Deck Builder: Why Choose Our Deck Company?

We specialize in designing and building beautiful, custom, PVC and composite decks, in Toronto. At GMM Decks, we are committed to providing our clients with exceptional customer service. We take a collaborative approach to every project, working closely with our clients to ensure that their vision is brought to life. From the initial consultation to the final walk-through, we are here to answer any questions and address any concerns that our clients may have.

If you’re looking for a custom deck builder that you can trust, look no further than GMM Decks. Contact us today to schedule a consultation and let us help you create the outdoor living space of your dreams.

Looking to add a functional and stylish shed to your backyard in Toronto and the Greater Toronto Area? Look no further than deck contractor GMM Decks! Contact us today to schedule a consultation with our expert designers and builders and let us create the perfect custom shed to meet your specific needs and desires.

What types of deck materials do we offer?

We only use the highest quality decking materials in our construction projects in Toronto, ensuring that your custom new deck is not only beautiful, but also built to last. We offer a wide range of decking materials to suit every taste and budget:

  • Wood;
  • Composite;
  • PVC;
  • Aluminum.

The choice of decking material depends on various factors such as durability, maintenance requirements, aesthetic preferences, and client’s budget. Rooftop decks or deck installation? Choose your own variant!

What Clients Say About Our Work

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Thank you for your interest in our company.
We offer services in Toronto & GTA: Aurora, East Gwillimbury, King City, Markham, Newmarket, Richmond Hill, Vaughan, and Whitchurch-Stouffville.

Toronto, Canada

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