To construct a free-standing patio, first, select the desired location and mark the layout. Excavate the area and level the ground. Install a weed barrier and gravel base. Build a sturdy framework using pressure-treated lumber, ensuring proper dimensions and levelness. Attach decking boards or pavers as the patio surface. Add finishing touches like railings, lighting, and seating to complete the patio. To know in detail visit the blog post about how to build a free-standing patio.