Recently renovated in 2016, 21 Calhoun is a +/-7,450 square-foot Class A office building located in the center of Charleston''s downtown peninsula. Tenants will enjoy a world class work environment and convenient access to restaurants, hotels, shopping, arts and popular attractions.. Suites 200 & 300 are offered as a combined suite at +/-5,250 square feet over two floors. Recently renovated, a tenant will be able to occupy class A space with minimal upfit needed.