The book I am looking for is about a couple who decides they want a better house and they will sell theirs and move. But to sell it they must fix it up. They then proceed to fix it up (the garden, new paint, etc.). At the end their current house is so lovely that they decide its what they wanted all along and decide to stay.
I read it in the mid 80s at my grandmas house.
I would be delighted if you could solve my mystery