Washington Oaks Condos Princeton New Jersey is located on Hutchinson Drive in Princeton. Washington Oaks consists of four residential sections totaling 300 units. The four sections are the Arbors, the Estates, the Groves and the Oaks.  The Arbors contains 96 townhomes, the Estates contains 35 single family detached homes, the Groves contains 61 townhomes and the Oaks contains 108 condominium dwellings.