I did quite a lot of research into a garden office and eventually went for a Dunster Dominator 2.5 x 2.5. I was very apprehensive at first as I had never put anything together like this before and I had to buy all the tools and attempt to put it together on my own! I levelled the old patio first which took 26 bags of ballast/concrete - just to raise it 4cm one end!! I finally got the build complete after a week or so, once the first corner was fixed into position the rest was easy enough but double check then triple check your positioning before fixing down. Make sure you understand the instructions fully before you start and watch the video online. I had to pause the video in places to see how joins and folds went as some of it was not obvious from the instructions. The delivery was on time and with great communications throughout. It's now all painted with 3 coats which took longer to do than the actual construction. I have now moved in and am working in it every day and loving it. Thanks Dunster