There seems to be an unfortunate conflation of Guest House and B&B terms. There is a fairly simple distinction (at least in the UK and Ireland): B&Bs are family homes with occupiers in residence usually with 3 or bedrooms or fewer; Guest Houses are usually larger, are a primary business for the people running them, and may or may not have owner/occupier present. In Britain Guest Houses will have to comply with fire regulations. They are commonest in traditional tourism locations, and may also be used by social services for housing families without accomodation.
In the US B&B often refers to a fairly up-market operation which doesn't fit cleanly in the typical UK / Irish terminology: although ones I've stayed in were owner-occupied. SK53 (talk) 09:02, 7 October 2013 (UTC)