what is dwelling house relief
Dwelling House Relief. This is a relief, from inheritance tax (CAT) that applies to a dwelling house. A dwellinghouse is defined as a building or part of a building which is used as a dwelling.The dwelling house relief applies only to the part of the building used as a dwelling and includes grounds up to one acre.The relief is a full relief from inheritance tax, if the relief applies. dwellinghouse is defined as a building or part of a building which is used as a dwelling. The dwelling house relief applies only to the part of the building used as a dwelling and includes grounds up to one acre.