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we where going to emigrate to Canada this year, as the house was bought from the council in MIL's name (she had been the tennant for over 40 years) we got full discount, the council could see her as owning a 50% stake in the property, so to safe guard the majority we set up a tennants in common agreement showing her as owning 10%, which would be the maximum the council could recover from the property if she had to go into care after we left, as it is we never moved to Canada & she has just passed away at the ripe age of 87.