[Smudger]

Thanks for the reply!

The only other choice I have is to leave them where they are now, but as I said I want to give them more freedom and space, and the only way to do that is a) move house, or b) put them outside. Moving house isn't an option at the moment!

What I'm trying to do with the shed is give them a living enviroment comparable to the one they currently have, with the added bonus of allowing them to play outside when they want to. I'm assuming that if the weather's bad that they will choose to stay indoors anyway-if not, the cat flaps are lockable so I can keep them inside until the bad weather passes.

I'm going to look into air-conditioning as opposed to heating, so I can set and maintain the perfect temperature for them all year-round.

Edit: Furkidsmommy-yes they do. Why's that?