The mansion was built in three phases. John Fell built the first portion in the 1760's with a wing being added in the 1830's.  This was followed by an addition in 1915 to bring the house to its current Colonial Revival appearance.  The stately mansion is set on 2.8 acres and includes a Gothic Revival Barn, wetlands and a stand of old-growth trees.  The house is across the street from the Celery Farm Bird Sanctuary, originally part of the John Fell estate, which is open to walkers year-round.