New Castle Building Products is a construction supply superstore with five locations in the tri-state area. The White Plains branch is near the corner of Knollwood and Old Tarrytown, about 10 minutes outside of downtown. Items include residential and commercial roofing accessories, windows, doors and other building supplies. New Castle Building Products also provides expert consulting on any phase of the construction process.
Murphy's Metal is a local warehouse that supplies metal parts for gutters and levees. The company works with general contractors and commercial residences from its facilities in a business complex on Lincoln Avenue. Murphy's Metal accepts major credit cards and cash, but will also accept company checks from long-standing patrons.