6x6 deck post spacing

When I built my deck, one of the biggest questions I had was how far apart should I put my deck posts? One of the most difficult parts when building a deck is planning, especially when trying to determine your deck post spacing.

Luckily, there are tons of handy charts to help get you started.

Ideal deck post spacing is 8 feet or less.

4x4 deck post spacing

The distance between deck support posts depends on the type of wood species used and the size of the joist and beam. There is no minimum span, and maximum spans can reach up to 15’.

Below we’ll take a look at some of the main considerations when asking how far apart should deck posts be.

One of the biggest is knowing what your local building code allows. Most codes in North America offer charts that will take into myriad factors that we’ll talk about, plus we’ll go over how to read those charts, as they can be confusing.

Factors that Influence the Spacing of the Deck Support Posts

The key factors that influence how far apart your deck posts when deck building will be are numerous.

The most obvious factor is ho

how far above ground should deck footings be

how close can deck footing be to house