It would be wrong to assume that an imaginative extra outbuilding automatically adds value to a property and makes it more saleable.
‘True, they can add wow-factor,’ says Carol Peett, of West Wales Property Finders.
‘But some of these structures require planning permission and, if that’s not in place, then a sale may stall. Also, it’s a mistake to over-personalise these buildings. That can be off-putting to buyers.’
http://www.dailymail.co.uk/property/article-3838494/Bothies-yurts-sheds-treehouses-garden-hideaways-add-value-property.html – Daily Mail 15th October 2016