Now that it's laser-leveled on concrete pilings it has cables that also keep it anchored. Lifting a prebuilt carpeted & heated top section into place and bolting that down was both fun & awkward. We have a staircase with a landing built so we'll be attaching that next. On the day we moved it into place, no one remembered to bring a chainsaw so we had to take turns chopping down a nice size tree with an axe. I'm afraid to imagine what the future ones might look like if someone decides we need to go bigger next time.