Playing around with a floor plan layout to fit your unique space is a great way to determine how you can wisely use your space. If you are a party person, a good rule of thumb for comfort is 5 square feet per person. However, the beauty of an outdoor space is that the area for activities readily expand out into the yard.
Figure the area of the intended outdoor living room, by multiplying the length by the width. For example, if your outdoor room is going to be 16 feet long and 20 feet wide, the area is 320 square feet (16 x 20 = 320). If you have a room that is shaped irregularly, separate the room into square portions for ease of measurement. If you measured the room in sections, add up the square feet of each section.
In the example above, divide the square footage of 320 by 5 square feet — to fit 12.8 people with ample room to move about. Rounding down — that room should comfortably hold 12 people — with arms spread out and plenty of “personal space.” However, the occupancy will be lower with the addition of obstructions, such as tables, couches, water feature, movie screen, hot tub, barbecue, kitchen bar, fire pit, etc.