Condos This search returned 5 properties. Contact Scott for more information about these fantastic properties. 51 CORNERSTONE DR Ballston Spa $264,000 MLS #: 201931741Property Details 17 CORNERSTONE DR Ballston Spa $274,000 MLS #: 201932970Property Details 21 CORNERSTONE DR Ballston Spa $290,000 MLS #: 201933607Property Details 13 CORNERSTONE DR Ballston Spa $269,000 MLS #: 201935702Property Details 53 CORNERSTONE DR Ballston Spa $279,000 MLS #: 201935703Property Details