We are thinking of building a granny annex for my Mum (husband oK about it)...she is young and fit 62 but broke - so we hit on this idea of building self contained at ours and releaseing money for her to have an income on the sale of her house. Is this a good idea - very close to my Mum, she is active etc with a busy social life - so not dependant - just want her to be financially independant. If anyone else lives like this or has an opinion/advice on the things we need to consider please let me know