Subletting is an attractive option, particularly in condos, so how can it get out of hand?  It’s the board’s financial responsibility not to saturate the building with sublets. Once the building hits a certain level, lenders will not lend in that property. If it goes over 50 percent, Fannie Mae and Freddie Mac for sure will look at the building as a rental rather than as a co-op or condominium.    Read the article………………………….