I am waiting for a building permit before putting up the gazebo. A permit is needed here if the square footage exceeds 100 sq ft.  My local building department tells me that they emailed the manufacturer for engineering specs and were told there are none!  The company even said they stole the idea from somewhere else. As I am in Canada we are concerned about winter weather impact but it does seem a strongly built product.  Luckily, it seems my municipality will give the permit but I would suggest any buyers make sure they can get a permit if required.  Otherwise, my wife and I are looking forward to putting this up and enjoying it as other buyers seem to suggest will be the case