It may also depend on whether the MIL is considered “sub-habitable” for the home. In principle, your SIL needs legal advice or advice from someone like CAB. If someone dies, the communal lease can be passed on by inheritance to someone who has lived in the property for the past 12 months. You must get legal advice before becoming a co-tenant or adding a tenant to your consulting contract. Ask for advice before awarding your rental agreement if you want to stay in your home You cannot normally award a start-up lease or a degraded rental agreement….