What Is a Deck? A Quick Overview!

If you're thinking about adding outdoor living space to your home, the first question is simpler than it sounds: what exactly is a deck, and is it the right choice for your yard?

A deck is a raised outdoor platform built on a structural frame - footings, posts, beams, and joists - with decking boards on top. That's what makes it different from a patio (which sits on the ground) or a porch (which is covered and typically at the front of the house). Decks are elevated, open to the sky, and built for real outdoor living.

There's More Than One Type

Not every deck looks the same or works the same way. Attached decks connect directly to the house and are the most common. Floating or detached decks stand on their own, great for sloped yards or creating a separate outdoor zone. Multi-level decks step down with the terrain. Wraparound decks run along two or more sides of the house. Each type suits different lot sizes, budgets, and lifestyles.

Material Choice Drives the Cost

Pressure-treated wood is the budget-friendly starting point but requires regular sealing and maintenance. Composite decking costs more upfront but needs almost no upkeep and lasts significantly longer. For a fully installed deck, most homeowners are looking at somewhere between $25 and $80 per square foot depending on material, size, and local labor rates.

Worth Knowing Before You Start

The ledger board - the piece that attaches the deck to your house - is where most deck problems originate. Proper flashing and fastening here isn't optional. Permits are also required for most attached and raised decks, so checking with your local building department before breaking ground is always the right move.

There's a lot more to cover: full parts breakdown, deck vs. patio vs. porch comparisons, cost data by material, and common questions about permits, lifespan, and ROI.

Read the full "What Is a Deck? Types, Costs & Parts" guide here.