Amendment 45, now section 11B of the Planning (Scotland) Bill as amended, would require an application for planning permission to be made in all cases where a house or flat changes use from being a sole or main residence to being used for short-term holiday lets, except where it is also the landlord’s sole or main residence. Drawing on the number of new “self-catering units” entered each year on the Scottish Assessor’s Valuation Roll for non-domestic rates, and estimates of the number of new “entire home” lettings on AirBnB and similar websites, we consider that, at least in the short term, between 1,521 and 11,500 properties might require planning applications each year.