Ideas for Outside Office

Need to move office out of the house and want some sort of room outside around 10x10. It has to be able to withstand extreme weather and ideally timber. I have been looking online at some of these log cabins but think they are all a little expensive. Any ideas what I could use ?

The bloke who invented the bricky tool shows you how to build your own. Its on bricky.com, I started a similar project last week its going to be 5mx5m and I have priced it up at 4.5k.

You could have a read through previous threads and you might get some advice there. I used the 'garden rooms' search option but you may find some other threads with different criteria.

This thread might be of interest. There's a place at Red Cow roundabout that has some of these very old containers and they would require a lot of work to remove rust etc. but just another option.