MIL is a widow. She lives in a large 5 bedroomed house with a separate annex. She's getting quite elderly and needing us to pop in several times a week. Dh has suggested the above - MIL moves into the two bed annex and we move into the large house. I'm tempted particularly as it has land. It's not in a very nice area (outskirts of run down town on a busy road) but it's secluded and set back from the road. Only thing is, our current house needs quite a lot of work. New kitchen, new kids bathroom and everything is generally a bit dilapidated. We'd have to spend about 20k on it I think and even then it's a period cottage so gets cold and draughty in winter. I'm sure renting out a property isn't as simple as dh thinks - what have we missed?!