I'm looking to buy a garage/workshop in the future and I'm finding it difficult to find any with an existing power supply so I'm toying with the idea of buying one without and getting power installed. Has anybody here done anything similar before and if so what were costs like? I've seen some sites quote less than £2000 but a guy at work, who built his own house, said it cost him nearly £16000 for the luxury and even then, he wired the whole house himself.