Deck, Patio & Outdoor Living Guide

The honest recommendation: Composite decking has a higher upfront cost than pressure-treated wood but eliminates annual staining and board replacement. Over a 20-year period, composite is often cheaper when you factor in maintenance costs and time. Pressure-treated is the right choice if budget is tight and you're willing to maintain it.

• Frost footings in cold climates: Deck posts must sit on footings that extend below the frost line — typically 36–48 inches deep depending on your region. Footings that don't extend below the frost line will heave and shift, causing the deck to become uneven and potentially unsafe.
• Post size and spacing: Most residential decks use 6×6 posts for heights over 4 feet and 4×4 posts for lower decks. Post spacing typically should not exceed 8 feet on center. Spans depend on joist size and decking material — your structural plan should specify all of this.
• Ledger attachment — the most common deck failure point: The ledger board is the piece of lumber that attaches the deck to the house. Improper ledger attachment is the #1 cause of deck collapses. The ledger must be properly flashed (waterproofed where it meets the house siding) and attached with structural lag bolts or through-bolts — not nails. Water infiltration behind an unflashed ledger causes rot in both the ledger and the house framing it's attached to.

Freestanding decks: Some homeowners choose freestanding decks (not attached to the house) to avoid ledger issues and potentially simplify permitting. A freestanding deck has posts on all sides and stands independently. This can be a smart choice if your house has a challenging exterior material (stone, stucco) for ledger attachment.

Almost always required for attached decks. An attached deck is structurally connected to your home and must meet building codes for structural safety, railing height, balusters spacing, and stair requirements.

Freestanding decks over 30 inches: Most jurisdictions require permits for freestanding decks that are more than 30 inches above grade at any point. Some jurisdictions require permits for all decks regardless of height. Check your local building department.

What the permit process involves:

• Submit a site plan showing deck location relative to property lines and house
• Submit structural plans showing footing depth, post size, beam and joist sizing, ledger attachment details, railing design
• Footing inspection before pouring concrete
• Framing inspection before decking is installed
• Final inspection when complete

Permit requirements for permanent structures: Any roofed structure attached to or near the home — pergolas with solid roofing, covered patios, pool houses — typically requires a building permit. Freestanding shade structures (open pergolas, fabric sails) may not, depending on your jurisdiction.

Electrical considerations: Outdoor kitchens need dedicated circuits for appliances, GFCI-protected outlets, and proper waterproof electrical boxes. Running electrical to an outdoor kitchen typically requires a licensed electrician and electrical permit.

Gas considerations: If you're running natural gas to an outdoor grill or cooktop, this requires a licensed plumber or gas fitter and a gas permit. Propane is simpler (portable tank) but limits your options.

Roofed structures and architectural review: In many neighborhoods with HOAs, adding a permanent covered structure requires architectural review board approval. Even without an HOA, some municipalities require design review for structures visible from the street. Check before designing.

Budget reality: A basic outdoor kitchen (built-in grill, counter, small fridge) starts around $5,000–$15,000. A full outdoor kitchen with covered structure, sink, gas, electrical, and finished countertops can easily reach $30,000–$100,000+.