What’s a liveable space?
Bedrooms, living rooms, dining rooms, and kitchens are considered ‘liveable’. So don’t worry about the hallway!
A fix of fresh air
Each window, door or skylight needs to be able to open to the outside, and stay fixed in an open position. It’s about fresh air and ventilation.
All kitchens and bathrooms, i.e. any room in your property with a bath, shower or cooktop will need an extractor fan that’s vented to the outside.