Single Family Home for sale by owner in Saint Marys, PA 15857. Lovely 2-Story, 3 bedroom, 1 bath home for sale in Saint Marys, PA. Gas and Electric Heat. Full, unfinished basement. 2-stall detached garage. .67 acre lot with 10x14 shed, garden, full landscaping and fire/entertainment area in the backyard. Kitchen recently redecorated with ... more.