Thanks. House is built on a concrete float foundation which garage is on too, so that shouldn't be a problem.
Is that way overly expensive compared to just building a second skin?
Hi, new on here and after some advice. I'd like to build an extra room over our single skin double garage. I realise that the walls in their current state won't be strong enough but building a second skin internally would be difficult due to all of the mains coming in through one wall and a...