According to TMZ, the 'Octomom' missed the lump sum payment on March 10 and is also behind on $4,139 (£2,755) monthly payments.
Her realtor on the property Amer Haddadin has said that he will file a lawsuit against the parent if she doesn't pay the two amounts plus interest and attorney fees.
Haddadin also explained that he is indebted to the bank for the same amount as Suleman owes him and if he does not obtain the money, his business will go under.
As for why the mother of eight children has not paid, Haddadin claimed that he has been unable to get a hold of her. "It's radio silence," he said.