It was added to the National Register of Historic Places on July 23, 1979 for its significance in architecture, using Greek Revival temple style.

[6] The courthouse was the site of a daring raid during the American Revolution by one of the Loyalists' best operatives, Lieutenant James Moody.

[7] In 1780, Moody led several men to free eight Loyalist prisoners held in the Sussex County Courthouse.

Despite a pursuit lasting several days, Revolutionary forces failed to capture them.

The court was gutted by fire in 1847 and rebuilt within the original fieldstone walls.