Blandair takes its name from Theodorick Bland, a colorful figure in early Maryland politics, who served as Chancellor of Maryland from 1824 until his death in 1846. While the property was farmed as early as 1798, most of the existing buildings date from the mid–19th century, and include a granary, springhouse, tenant houses, and the brick main house. Howard County purchased the property in 1998 and is continuing to develop the site into a regional park.

Phase I of Blandair Park, now open to the public, encompasses 25 acres. Once the final phase is complete, the park will be 300 acres. Amenities now available include three lighted synthetic turf multi-purpose fields, press boxes and bleachers, along with a playground and a parking lot. Phase I of Blandair Park eventually will include a pavilion and comfort station. The park is conveniently located on Oakland Mills Road, one-third of a mile north past the intersection of Old Montgomery Road and Oakland Mills Road

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