Building a SIP workshop.

£3600, but I have gone a bit overkill because I've got some big trees quite close (probably closer than is ideal, but they are mature trees), and I want to park a car on it. especially considering they dug our road up to fix a burst pipe and I saw how thin the road surface was (probably about 50mm subbase and 75mm tarmac) and we get a fair few trucks and tractors going up and down to the farm down the road. But I'd rather have it over-done than under-done.

It's dug out 250mm, 150mm hardcore/type 1, 150mm reinforced concrete with fibres and A142 reinforcement mesh. Plus I had them dig a trench from one corner to a corner of the house (about 5m), for electric and a water supply, and stick in provision for a soil pipe (drainage) whilst they were at it.

I very seriously considered doing it myself until recently, but after seeing how hard the two of them worked and how long it took them (they allowed 2 days and basically ran out of time and came back for another half a day to finish off and tidy the site up), I reckon it would have taken me a solid couple of weeks worth of man hours working mostly alone, and it'd likely not be as good.

I priced the materials up to do it myself and it was around 2k, could be less if you did it all by hand with no machines but it'd take forever, with machine hire etc. you could easily clear 2k all in doing it yourself. I had quotes from 3.2k to 5k (I'm in Norfolk), but these guys came highly recommended.