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Premium composite deck by Mighton Construction

Free Planning Tool

Deck Cost Calculator

Composite or PVC, ground-level or elevated — estimate what your new deck will cost to build properly for our climate.

Request a Real Estimate
  • 25–50 year product warranties
  • Footings below frost, framing beyond code
  • Permits handled

Your deck

Elevated structures need engineered framing, stairs, and longer railing runs — they typically land in the upper part of the range.

Planning range

$24K – $45K

300 sq ft · Premium composite · Ground level

A planning range, not a quote. Railings, stairs, lighting, privacy features, and site access determine where your project lands.

Discuss This Budget With Us About Our Decks

What a Deck Really Costs to Build Well Here

Premium composite and PVC decks in South Georgian Bay plan at $80–$150+ per square foot and PVC at $100–$180+ — and the honest reason those numbers beat a lumber-store estimate is everything under the boards. A deck here spends months under snow load and the rest of the year in UV and freeze-thaw, so we build footings below frost depth, frame beyond minimum code, and fasten to manufacturer spec so the 25–50 year warranties actually hold.

Elevation is the biggest cost lever after size. A walkout-height deck adds engineered framing, stairs, and railing runs — worth budgeting realistically from the start rather than value-engineering the structure you'll stand on. Railings are the second lever: aluminium and glass cost more than composite pickets but transform sight lines, especially on Collingwood's sloped lots and Wasaga Beach's beach-side properties.

When you're ready, a free site visit turns this range into a real number — measured, specified, and priced open-book through our deck building service.

Calculator questions

Frequently Asked Questions

How accurate is this deck cost calculator?
It uses the planning ranges we publish for premium deck construction in South Georgian Bay — composite at $80–$150+ per square foot and PVC at $100–$180+ — applied to your size and elevation. Railing choices, stairs, lighting, and site access shift the final number, which is why real quotes follow a site visit.
Why do these numbers look higher than big-box store estimates?
Store estimates usually price boards, not decks. Ours reflect the whole structure built properly for this climate: footings below frost depth, framing engineered for snow-belt loads, manufacturer-specified fastening that keeps the warranty valid, and permits handled. That structure is why the deck is still flat and solid in year fifteen.
Is PVC worth the premium over composite?
On waterfront and heavily shaded properties, usually yes — PVC is fully synthetic and immune to moisture, which is why it is our first recommendation near the water. For most inland homes, premium capped composite delivers the best look-per-dollar. We are glad to show you both in hand.
How do I get a real deck quote?
Book a free site visit. We measure, look at grade and access, talk through materials and railings, and give you a real number backed by our open-book pricing — you see the actual material and trade costs.

Get a Real Deck Quote

Book a free site visit. We'll measure, talk materials and railings, and price your deck open-book — booking in winter gets you grilling by the May long weekend.

Start Your Deck Project