Im posting on behalf of my bro, who has -15 diy ability, but has two teen girls killing each other sharing a bedroom. He's looking at putting in a liveable shed, as can't afford (sole parent) any further house extensions.
The shed won't be attached to any plumbing, and is just meant to be an additional bedroom/escape space for the oldest twin girl.
There's not a lot of builds here for livable sheds, so looking for those that have done them, and the total costs involved. No other buildings on the block aside from the primary residence, and without connected water doesn't require council permission.
So please show me your sheds😁