Deck cost calculator · Kitchener-Waterloo & the GTA
How much does a deck cost in Kitchener-Waterloo?
Pick your size, height, boards and railing below to see what a deck like yours usually costs with Micton Home Renovations. The ranges come from decks we've recently built and quoted in Kitchener, Waterloo, Cambridge, Guelph and the GTA, and they include materials, labour, permit drawings and cleanup.
What will your new deck cost?
Answer five quick questions and see a price range right away. When you're ready, we'll come out, measure and give you an exact quote for free.
How big?
How high off the ground?
Deck boards
Railing
Anything else?
Typical deck prices in 2026
Price ranges for common sizes, plus HST. Raised decks include a permit, wood or aluminum railing on three sides and a set of stairs.
| Deck size | Ground level, wood | Raised 5–8 ft, wood | Raised 5–8 ft, composite & aluminum |
|---|---|---|---|
| 10 × 10 ft100 sq ft | $3,800 – $4,500 | $7,100 – $8,400 | $12,500 – $14,600 |
| 12 × 12 ft144 sq ft | $4,400 – $5,200 | $7,900 – $9,200 | $14,000 – $16,400 |
| 16 × 12 ft192 sq ft | $5,000 – $5,900 | $8,500 – $10,000 | $15,600 – $18,200 |
| 20 × 12 ft240 sq ft | $5,500 – $6,500 | $9,400 – $11,100 | $17,100 – $19,900 |
| 20 × 16 ft320 sq ft | $6,600 – $7,800 | $10,600 – $12,500 | $19,800 – $23,100 |
Ground-level decks are under 2 ft high, with one or two steps and no railing. Removing an old deck, skirting, glass railing and landings are extra.
What changes the price of a deck
Size
More square footage means more framing, footings and boards. Cost per square foot drops as decks get bigger.
Height
Decks over 2 ft need a permit, a railing and longer posts and stairs. A second-floor deck costs more than a ground-level one of the same size.
Boards
Pressure-treated wood is the most affordable. Composite costs more but doesn't need staining.
Railing
Wood spindles cost the least, black aluminum spindles add a modern look, and full aluminum or glass railing costs the most.
Stairs & landings
Every extra step adds stringers, treads and railing. Tall decks may need a landing.
Removal & site
Tearing out an old deck, tight access, slopes and hard digging all add time.
Deck cost questions
How much does a deck cost in Kitchener-Waterloo?
A pressure-treated wood deck raised 5 to 8 feet, with wood railing and stairs, usually costs about $7,100 for a 10 × 10 up to $12,500 for a 20 × 16, plus HST. Ground-level decks start around $3,800. Composite boards with aluminum railing usually cost about 1.8 to 1.9 times as much as wood.
Do I need a permit to build a deck in Ontario?
Usually yes if the deck is more than 2 feet (600 mm) above the ground. The exact rules depend on your city, so we check with your municipality, prepare the drawings and handle the application. Permit costs are included in our quotes when a permit is needed.
Is a composite deck worth the extra cost?
Composite costs more up front but never needs sanding or staining, so it suits people who want a low-maintenance deck for many years. Pressure-treated wood is the best value and looks great when it's stained every few years. The calculator shows both so you can compare.
How long does it take to build a deck?
Most decks take about 3 to 7 working days on site once the materials and permit are ready. Larger decks, multiple levels and composite or glass railings take longer. We'll give you a timeline with your quote.
Is the calculator price my final price?
No. It's a ballpark range. Your exact price depends on your yard, access, soil, the height at the door and what the permit drawings require. We come out for free, measure everything and send a written quote.
Which areas do you serve?
We build decks across Kitchener, Waterloo, Cambridge, Guelph, Milton, Mississauga, Brampton, Hamilton and the rest of the GTA.
Want an exact price?
We'll visit, measure and send you a written quote at no cost.