Even if|Even when|Even though|Whether or not|Regardless of whether|Although} your {real estate|property|real-estate|real estate property|housing} {contract|agreement|deal} {has been|continues to be|is|has become|has actually been|has long been} {written|created|composed|prepared|published|penned} on {toilet|bathroom|rest room} paper, {it's|it is|it really is|it truly is|it can be|it is really} {valid|legitimate}.