18x18-Foot Pergola, Gazebo & Arbor Plans

A 18x18-foot footprint covers about 324 square feet of usable shaded area — enough room for a full outdoor dining set with seating for 8-10. Below are every published plan at this footprint, including freestanding and (where applicable) attached variants.

For planning, allow at least 24 inches of clearance on every side for furniture pull-out and unobstructed walking paths. If you intend to grow climbing plants, plan for an additional 18-24 inches of overhang clearance because mature wisteria, grapevine, and climbing roses produce a dense canopy beyond the structural perimeter.