I'm looking to get a raised decking installed in the garden. It would be approximately 2.4m wide x 5.2m long and 0.4 m height. I want a couple of small stairs to the front, wheelchair/pram ramp to the side and a simple banister around the perimeter of the decking. I'm about to get a company in to quote but want to have idea of what I should be expecting for supply and install.