Custom Deck Builder in Thunder Bay
If you're looking for a deck builder in Thunder Bay, we build decks that are engineered for the climate — deep frost footings, pressure-treated framing, and decking materials that won't cup or rot after three winters. At Fence Deck Sheds, every deck is designed around your yard, your budget, and how you actually use your outdoor space. We handle the full build from footings to railing.
Deck Materials We Build With in Thunder Bay
Pressure-Treated Wood
$35–$65 / sq ftThe most cost-effective option. Pressure-treated pine takes stain well and is the standard choice for Thunder Bay homeowners. Requires sealing every 2–3 years.
Cedar Decking
$45–$80 / sq ftNatural appearance and better moisture resistance than pressure-treated. Cedar stays cooler underfoot and looks premium stained or left to silver naturally.
Composite (Trex / TimberTech)
$65–$110 / sq ft25-year fade and stain warranty. Never needs painting or staining. The highest upfront cost but the lowest lifetime maintenance — ideal for Thunder Bay's climate.
From Footings to Railing — How We Build Your Deck
Free On-Site Quote & Design Consultation
We visit your property, discuss your vision, assess the site conditions, and walk you through material options.
Permit Check
Thunder Bay requires a building permit for most attached decks over 2 ft above grade. We confirm your requirements and assist with documentation.
Frost Footing Installation
Helical piers or poured concrete footings installed to the local frost depth (minimum 48" in Thunder Bay). The foundation your deck is built on.
Framing & Joist Work
Pressure-treated framing, beam sizing, and joist layout — all built to Ontario Building Code for your deck's size and load.
Decking Installation
Boards installed tight, fastened properly with the right hardware for your chosen material — hidden fasteners available for composite.
Railing & Stairs
Railings to code height, balusters at the right spacing, stairs with proper rise/run — all the details that make a deck safe and finished.
Final Inspection Walkthrough
We walk the finished deck with you before we call it done. Any concern gets fixed on the spot.
Deck Styles We Build
Ground-Level / Floating Decks
Low-profile decks that sit just above grade. Simple, clean, no permit required in most cases.
Raised Decks with Stairs
Built off the main floor door. Full stair runs, landing platforms, railings — complete builds.
Multi-Level Decks
Two or more levels connected by stairs. Great for sloped yards or separating spaces.
Wrap-Around Decks
Decks that turn the corner of the house — maximise outdoor space and sun exposure.
Decks with Pergolas
Overhead structure attached to the deck frame — shade, privacy, and curb appeal.
Privacy Screen Decks
Lattice, vertical board, or cable rail screening integrated into the deck design.
Do You Need a Permit for a Deck in Ontario?
Short answer — usually yes. In Thunder Bay, most decks over 10 square metres or higher than 600mm (about 2 feet) above grade require a building permit.
What you'll need: A site plan showing where the deck sits on the property, deck drawings with dimensions and framing details, and a permit application with the City of Thunder Bay.
Turnaround time: City of Thunder Bay permit turnaround is typically 2–4 weeks for straightforward residential decks.
What we do: We tell you exactly what your specific deck requires and assist with the documentation. You don't need to navigate the permit office alone.
Deck Builder Thunder Bay — Frequently Asked Questions
Get Your Free Deck Quote — Thunder Bay
Call (807) 621-5672 or send us your measurements — we'll come out, walk your yard, and show you exactly what we'd build and what it'll cost. No pressure.
(807) 621-5672"New deck looks amazing. Built it right the first time. Footings are solid as a rock."
— Port Arthur, Thunder Bay