Is it permissible to share the apartment with more people then what is written on the lease

I live in California , the apartments here are very expensive ,I have leased an apartment ,according to the lease contract in total 3 persons can live in the apartment , but since the apartments are very expensive its very difficult for Muslims to find cheap rooms , is it permissible to share the apartment with more than 3 persons in order to lower the cost of a shared room ,considering that most of us work and use the apartment just as a place to sleep and cook food .Also one of the muslim brother with whom i intend to share the apartment live in other state and come to california to work (does not use the apartment during weekends and live hardly 15-20 days a month)