Clients and consultants

The following is a list of past and present clients and consultants that have turned to Callahan to provide preconstruction or construction management services over the last 60 years.


Alliance Residential Company

Avalon Bay Communities

Babson College

Bed Bath and Beyond

Benchmark Senior Living

Benderson Development

Boston Properties

Boston Scientific Corporation

Cabot, Cabot and Forbes

Canpro Investments Inc.

Cape Cod Surgeons

Cavium Networks

Charles River Labs

Choice Hotels International

Claremont Companies

Covanta Energy Corp

Criterion Development Partners

Cumberland Gulf Group of Companies

Dickinson Development Corporation

Dicks Sporting Goods

Dinosaur Capital Partners

EH Publishing

Equity Office

Equity Residential

Falmouth Ice Arena

Federal Realty

Finard Properties

Forest City

Forest Properties

Gate Residential Properties

Golub Corporation

Grossman Development Group

Growth Company

Gutierrez Company

Harvard Square Holdings


Host Hotels & Resorts

Housing Assistance Corp.

Housing Investments

J.W Katzen Company

Jamestown Commercial Management Company

JC Penney Company Inc.

Jefferson Apartment Group

John Flatley Company

John M Corcoran and Company

Johnson & Wales University

KSS Realty Partners

LCB Senior Living

Leggat McCall Properties

Liberty Mutual

Lincoln Property Company


MacDougalls’ Cape Cod Marine Service

Market Basket

Marriott Corporation


Marwick Associates

Massachusetts Institute of Technology

Mayo Group

Mclean Hospital

Millipore Corporation


National Development

New Boston Fund

New England Baseball

Nissan 24

Northbridge Companies

Papa Ginos Pizza

Park Lodge Hotel Group

Partners Healthcare

Plymouth Housing Authority

Preservation of Affordable Housing

Priderock Capital Partners

Public Consulting Group

Redgate Real Estate Advisors

Retail Management & Development

Roseland Property Company

Sam Park & Co.

Samuels & Associates

Saunders Hotel Group



Simpson Housing

Stratford Capital Group

Sullivan & Company

Summit Hotel Properties

Taurus Investment Holdings

Kensington Investment, Co.

Lombardo Companies

May Company

Michaels Organization

The Northbridge Companies

The TJX Companies

Trans Del Corporation

Universal Properties Group

Urban Spaces, LLC

URBAN/Capital Partners

VinCo Properties


Wingate Companies

Wood Partners

Woods Hole Golf Club



ADD, Inc.

AHA Consulting Engineers

Allen & Major Associates, Inc.

Allevato Architects Inc.


Bergmeyer Associates

BKA Architects, Inc.

BMA Architectural Group

Boehm Architecture

Brennan Beer Gorman Architects

Carlson Associates

Carrol Design Studio

CBT Architects

Colliers International

Commercial Construction Consulting

Cresa Boston

Cross River Architects

Cube 3 Studios

David Carter & Associates

Davis Square Architects

DiLullo Associates, Inc.

Dimella Shaffer

DiNisco Capital Partners

DMR Architects

Dyer Brown & Associates, Inc.

EBI Consulting

EGA Architects

Elkus Manfredi


George J. Khouri Associates

Gorman Richardson Lewis Architects

Group One Partners

H.W Moore Associates, Inc.

HDS Architecture

Herschman Architects LLC

HFA Architects

HMFH Architects, Inc

Horsley Witten Group

ICON Architectural

JSA Inc.

Margulies, Perruzzi Architects

Maugel Architects

McNamara / Salvia, Inc.

O’ Sullivan Architects

Perkowitz and Ruth

Peter Quinn Architects

PMA Consultants

Prellwitz/Chillinksi Architects

R.W. Sullivan Engineering

Russell Scott Steedle & Capone


Smook Architecture

Spagnolo Gisness & Associates

Stein Troost

Symmes Mckee Associates

The Architectural Team

Valle Group

Veitas & Veitas Engineering

Visnick & Caufield


Wessling Architects