a building, or part of a building, that is used or suitable for use as one or more dwellings, or is in the process of being constructed or adapted for such use
adeilad, neu ran o adeilad, a ddefnyddir fel un annedd neu ragor, neu sy’n addas i’w ddefnyddio felly, neu sydd yn y broses o gael ei godi neu ei addasu i’w ddefnyddio felly