Are you a homeowner in Mississauga looking to enhance your outdoor living space with a stunning deck? If so, you’ve come to the right place. Demex Decks Company is your go-to choice for professional and experienced deck builders in Mississauga. With a proven track record dating back to 2010, we have been exceeding our customers’ expectations and creating beautiful decks across all neighborhoods in Mississauga.


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We are trusted for our work and provide it with a warranty.

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Building Your Dream Project


At Demex Decks Company, our primary focus is customer satisfaction. We take pride in our ability to turn our clients’ visions into reality, working closely with them throughout the project to ensure their preferences are met. We understand that a deck is more than just an outdoor space; it’s an extension of your home and a place for creating memories with family and friends.
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Demex Decks Company is your trusted partner for deck building in Mississauga. With a strong foundation in the industry since 2010, a commitment to customer satisfaction, and a reputation for providing the best value, we are the deck builders that homeowners in Mississauga can rely on. We look forward to working with you to create the deck of your dreams, enhancing the beauty and value of your home.

We provide transparent pricing, detailed quotes, and work with you to find cost-effective solutions that don’t compromise on quality. Our goal is to ensure that you receive a deck that not only enhances your home’s aesthetics but also increases its overall value.

Rooftop Deck
Second-Floor Or Walk-Out
Pool Deck
Multi-Level Or Multi-Tier
Backyard Deck
Attached Deck
Detached or Free-Standing
Floating Deck


With over a decade of experience, Demex Decks Company is a seasoned expert in the art of deck building. We have successfully completed countless projects, which means we understand the unique challenges and requirements that each project can present. Our wealth of experience ensures that your deck is not just a beautiful addition to your home but also a structurally sound and long-lasting investment.


We know that budget considerations are a significant part of any home improvement project. Demex Decks Company is committed to offering the best value for your investment. We provide transparent pricing, detailed quotes, and work with you to find cost-effective solutions that don’t compromise on quality. Our goal is to ensure that you receive a deck that not only enhances your home’s aesthetics but also increases its overall value.


What neighborhoods in Mississauga do we serve?

Demex Decks Company proudly serves all neighborhoods in Mississauga, ensuring that every homeowner in the area has access to our top-notch deck building services. Whether you’re in Clarkson, Port Credit, Meadowvale, Erin Mills, or any other part of the city, our team is dedicated to turning your dream deck into reality.

How long it takes to build a deck?

The size of the deck should be taken into consideration, the more complex the deck design, the longer it may take to complete. On average, deck construction in Mississauga takes between 5 to 14 business days. The exact timeline for deck construction can be given after the project design has been surveyed and agreed upon.

How much it costs to build a deck?

You can calculate the approximate cost of a deck using the data on the cost page. To calculate the full cost, you need to be an expert in deck building and understand all the technical aspects, know the quantities of all materials needed and their costs, as well as your city’s deck building codes. Or simply contact us for an estimate.

How to contact the Building Services ​Department in Mississauga?

Mississauga Civic Centre Address: 300 City Centre Drive Mississauga, ON L5B 3C1

Phone: 311 (905-615-4311 outside City limits)

Email: public.info@mississauga.ca

Monday to Friday: 7 a.m. to 7 p.m.

Is a permit required to build a deck in Mississauga?

A building permit is required for most renovation, construction or demolition projects. Below is a list of common projects that do not require a permit.


Even if your project doesn’t require a building permit, you must be in compliance with zoning and building codes.


Projects that don’t require a permit:

  • Deck less than 600 mm (2 feet) in height
  • Cabinetry or cupboards
  • Concrete pad
  • Damp-proof a basement
  • Decorations
  • Doors – replacing an existing one with the same size
  • Driveway – either widening or resurfacing
  • Eavestrough, if the drainage is contained within the property
  • Fence
  • Fireplace that’s decorative gas
  • Gazebo that’s 10 square metres or less
  • Landscaping work
  • Minor masonry repairs
  • Painting
  • Parking lots without catch basins that are new, expansions, or painting new lines
  • Plumbing fixture replacement in the same location, for example a sink, tub, toilet, or shower
  • Re-cladding a building with the same material, for example siding to siding, or brick to brick
  • Re-shingling a roof
  • Retaining wall less than one metre high
  • Shed less than 15 square metres, one-storey tall, free-standing, doesn’t contain plumbing and used for storage only
  • Windows – replacing an existing one with the same size

Which are Zoning By-law Standards in Mississauga?

The use of land, buildings and structures within the City of Mississauga is regulated by the City of Mississauga Zoning Bylaw 0225-2007.


There are general regulations that govern the location and setbacks of a new porch, deck or balcony. Refer to Table 4.1.5 of the Zoning By-law for general regulations regarding encroachments and projections.


There may be additional provisions, such as lot coverage, in the zoning for your property. Check the general provisions. Then check the zoning regulations for your property using the Find Property Information tool.


Follow the zoning requirements if something in the general rules conflicts with the zoning requirements for your property. Even if you don’t need a building permit, your project must comply with zoning requirements.


You can find out the legal restrictions for a deck or porch on the same information sheets.

If your property is located next to land that is zoned as greenland, then any new structures may need to be built further away from your property lines.


Please check the setback requirements for greenland zones in subsection 4.1.8 of the Zoning By-law.

What building codes govern the construction of decking in Mississauga?

It is important that your project meets the requirements of the Ontario Building Code, the Mississauga Land Use Bylaw and any other permits that might be required. You can read the Ontario Building Code of May 12, 2023 below. ONTARIO-Building-Code-Act-1992-c-23 ONTARIO-REGULATION-332-12-BUILDING CODE