When you’re getting estimates from deck builders near you, think about how many people you typically like to entertain at any given time. Some experts believe that you’d need a deck size of at least 288 square feet to entertain a group of 10-12 people comfortably. However, a larger deck of approximately 392 square feet or more is recommended. As a general guideline, provide approximately 20 square feet of room per guest. Keep in mind that this doesn’t account for the overall size of your yard, so you may not have enough room to build a deck this size. The best way to determine what deck size is right for your entertaining needs is to speak to a few local deck builders. They can assess your backyard and determine just how large your deck can be to accommodate all of your guests comfortably.