Thanks @blanchsb – It is hard to say how much this cost us exactly , as we did all of the work ourselves so we only paid for materials , but I would estimate that it cost us about £10-15K roughly. That includes windows , doors , the concrete base and all the wood you see to build it. Its also fully insulated and soundproofed with mass loaded vinyl too which was fairly pricey. A contractor friend of ours estimated that to pay someone to build it for us , it would have cost about £30-40K for labour and materials. As for the tools and CNC , we are still buying them as we go but I think we will have easily spent another £10K+ on those too…. I keep telling myself it will be worth it when its done…..