A sole tenant does not have a legal right to add a person to their tenancy. 

We usually only consider requests for a joint tenancy when the tenant wants a joint tenancy with their:

• spouse, civil partner or cohabitee; and
• the proposed joint tenant is not ineligible because they "don't have recourse to public funds".

Partners need to confirm they have lived together for more than a year.  Spouses and registered civil partners can be given a joint tenancy irrespective of how long they have lived together.

Council policy says that a joint tenancy would not usually be agreed between a tenant and their child, a carer or any other adult member of their household.  This is to stop tenancies being passed on and to avoid under occupation.

A joint tenancy remains secure, even if one tenant has left the home.  Both tenants remain joint tenants in these circumstances.  This is even if one tenant accepts another Camden Council property (see Ending a joint tenancy for what to do).

When a joint tenant dies the remaining tenant succeeds to a sole tenancy.  This is regardless of whether they have lived in the home.  This counts as one succession.