5. The persons contemplated in section 2 are deemed to be the sole owners or the sole lessees of the dwelling where they live when they are the owners thereof registered at the registry office or the lessees thereof responsible for payment of the rent.
The first paragraph applies even if persons other than those contemplated therein are also owners or lessees of the dwelling, provided they do not live in it.
A person who pays a rent to another person who lives in the same dwelling and who is responsible for payment of the rent in respect of that dwelling cannot be considered as a lessee responsible for payment of a rent.