Frequently Asked Questions
Does a deck require a permit in Ontario?
Yes, decks attached to a house or exceeding 24 inches above grade require a permit in Ontario under the Building Code. Always confirm with your local municipality for specific requirements.
How deep do deck footings need to be in Renfrew County?
Footings must be below the frost depth of 1.2–1.5 meters in Renfrew County to prevent heaving. This is critical for structural stability in cold climates.
What is the best decking material for Ontario weather?
Composite decking (e.g., Trex) or cedar are ideal for Ontario's climate due to their durability, resistance to rot, and low maintenance requirements.
How much does it cost to build a deck in Ontario?
A typical 12×16 ft deck costs $8,000–$20,000 installed, depending on materials (pressure-treated wood: $25–$45/sq ft, composite: $50–$90/sq ft). See our cost guide for details.
Is a deck considered a taxable improvement in Ontario?
Yes, decks are taxable under HST. However, new construction on a primary residence may qualify for rebates. Check the HST rebate guide for eligibility.
How long does a pressure-treated wood deck last?
With proper sealing and maintenance, a pressure-treated wood deck can last 15–25 years in Ontario's climate.
Can I build my own deck in Ontario without a contractor?
Yes, but you must ensure compliance with the Ontario Building Code, obtain necessary permits, and handle footings properly. Structural safety is critical for attached decks.