Irwin & Leighton, Inc.



Current Projects

Duke Farms Foundation, Hillsborough, New Jersey
Duke Farms Renovation

This multiphase project will transform Duke Farms into a regional center for environmental stewardship. Included is substantial renovation of several ± 100-year-old structures for various uses as well as extensive site improvements and infrastructure upgrades for the ±2,740 acre site. The project has the goal of achieving LEED Platinum and Gold certification for the Farm Barn and Orchid Range, respectively. The Architect is VITETTA.

Princeton Theological Seminary,
West Windsor Campus Student Replacement Housing

The project includes construction of new student housing, related support structures, site improvements, and utilities. Construction is underway on the three main buildings with an anticipated move-in date of late Summer 2011 for the first building. The project has the goal of achieving LEED Silver certification. The rendering below is courtesy of the Architect, EwingCole.


Princeton University, Princeton, New Jersey
Jadwin Hall Renovation

Irwin & Leighton is currently in phase four of a six-phase renovation to Princeton’s Physics building. Irwin & Leighton originally built Jadwin Hall in the early 1970s along with its sister building for Mathematics study – Fine Hall.

The Jadwin Hall renovation project, begun in September 2009, will span several years while the building remains occupied. The work encompasses ±240,000 SF and includes: office and laboratory space; replacement of the 40-year-old heating, ventilating and air conditioning systems; replacement of all perimeter windows; new energy efficient lighting; installation of a fire protection system; new interior finishes throughout; and construction of a ±8,000 SF penthouse to house the new mechanical equipment.

Architect:  MGA Partners and Payette Associates (Phase 3 only)


Target Stores, Inc.

New Store, Hanover, PA

Architect:  RSP Architects


New Store, Warwick Township, PA

Architect:  Mulvanny G2

Wal-Mart Stores, Inc.

New Wal-Mart Store, Newberry Township, PA

Architect:  Perkowitz + Ruth



© 2011 Irwin & Leighton