Octomom -- REJECTED By Home Owners

Octomom is PERSONA NON GRATA in the world of house rentals ... because no home owner is willing to rent their digs to the infamous mom and now she fears becoming homeless ... TMZ has learned.

As TMZ first reported, Octo needs a new house to stash her 14-kid brood because her old house is being foreclosed.

Sources close to Octo tell us she recently found a house in Orange County to rent for $2,700 a month, but the owner rejected her application out-right ... even though she sweetened the pot and offered to pay seven months rent upfront.

We're told Octo's agent asked why the homeowners weren't down with Octo occupying their crib -- and their real estate agent replied on their behalf saying, "They do not want to subject the neighbors to the media involved with the client."

Our sources say this is the third house Octo has been rejected from, all for the same reason.

It's bad news for O-mom ... we're told renting is her only option right now because she doesn't have the dough needed to buy a house. She scared that if the bias continues, she'll have nowhere to live.