I paid thousands of pounds for a design that was not feasible, did not work in our space, and was based on an inaccurate assessment of our conservation status. The only "design' element was a proposed built-in barbecue and refrigerator unit that would not fit (Urban Roof Gardens did not accurately measure the size of our water tanks). The final design presentation was a layout we specifically said we did not want (it included a dining table and chairs and we specifically said we did not want them). There was no CAD or 3-D presentation - they simply drew (in pen) on a paper layout of the roof terrace. After paying thousands for the "design", URG wanted thousands more to prepare proper drawings and manage the bidding process. We would have paid more than !0,000 GBP before any construction even began - so we ended our project with URG. I would not recommend.