Definition of 'DwellingHouse'

I guess you are looking at the possibility of extending your home by way of Permitted Development? If not can you please provide a little bit more information to help us provide you with an accurate answer. An attached garage is considered part of the dwelling, being the building as a whole. If you are thinking of Permitted Development then the total built area should not exceed half the total area of land around the "original house". This also includes further additions or other buildings within the boundary. Hopefully I have been able to answer your question. If not, please let us know.

as you do not live in the garage attached or not it is a garage and not a dwelling house the dwelling house is where you primarlly live eat ,sleep, even if you move a bed into the garage it still a garage

I would say planning wise it is part of the dwelling even though you cannot live in the garage until its been converted to satisfied building regulations. Hope this is some use to you. Cheers, Paul.

a dwelling house normaly refers to habitable rooms, regards Tery.