Peach Tree Condos in Washington Township are located at 401 Peachtree Rd, Hackettstown, NJ 07840. Click here to see if Peach Tree is FHA Approved. Peachtree are first and second level condominiums built in 1989. Units have 1 to 2 bedrooms and 1 to 2 baths. No basements; no garages. Interior living space ranges from approximately 900 to 1,400 sq. ft.