Kevin McCarthy


Josh Russell 


Francisco Luna

Project Manager

Sean Nelligan 

Senior Project Manager

Matthew Potts

Assistant Project Manager

Jim Ryan


Jim is the ever dependable “office dad” – always willing to lend a hand, unfailingly high-spirited, and a mentor to all.

Jim joined Group One in 2004, and has since used his more-than-30 years of experience in architecture, multi-family housing, and commercial restaurants to shepherd projects through to completion. Jim views each project as an opportunity for creative solutions, and provides design leadership, the assurance of client satisfaction, and technical and communication prowess throughout.

Eamon O'Marah



Mr. O'Marah specializes in identifying and executing complex urban real estate development projects with a focus in hotel mixed-use investments having completed and in current development 1,435 hotel rooms in greater Boston with a value in excess of $500MM.

Mr. O’Marah also developed the National Historic Landmark 115 room Ames Hotel in Boston with Normandy Real Estate Partners and Morgans Hotel Group in 2009. Also during this period, he purchased the prime development site in Boston at the Jacob Wirth Restaurant at 45 Stuart Street, secured City of Boston permits for a 30-story tower project at the property and subsequently sold the site to Avalon Bay Communities, Inc. in 2011.

Prior to forming Harbinger Development, Mr. O’Marah was recruited and held the key leadership position at Jones Lang LaSalle Americas (NYSE:JLL) in Boston heading Investment Development activity. During his three year tenure with the publicly traded company, Mr. O’Marah lead the firm to record performance in the Hotel development sector in Boston. Mr. O'Marah also ran the NYC based Morse Diesel Construction Company's Sports Sector successfully negotiating and building some of the nation’s largest professional sports facilities for the NFL, NHL, NBA and MLB with aggregate value exceeding $1B.

Mr. O'Marah is a graduate of Milton Academy and the Rhode Island School of Design. In 1999, Mr. O'Marah established the Kevin F. O'Marah Award endowment at the Boston Architectural College in honor of his late father given to the schools top graduate each year.

Yvette Tetreault


Yvette Tetreault is the Project Manager for 
CV Properties and is responsible for the administration, management and control of various hotel development projects underway or under contract in the Boston, Providence and St. Louis markets.


Prior to joining CV Properties in May of 2012, Yvette Tetreault was the property manager/office manager for a small real estate company in Boston where she also worked as a sales and rentals agent.

Yvette Tetreault holds a BA in Middle Eastern History from Simmons College and is proficient in English, French and Arabic. Yvette Tetreault is a licensed real estate sales person in the state of Massachusetts.

Olshan Properties is a privately owned real estate firm that has specialized in the development, acquisition and management of commercial real estate for more than 55 years. The close integration of investment and operating capabilities has given Olshan Properties a reputation as one of the leading private owners of commercial real estate in the country. The company is headquartered in New York City and manages properties in 9 states with a staff of over 1,000 employees. Since its inception in 1959, Olshan Properties and its affiliates have formed a proud history of creating quality projects, managing with integrity and harvesting value for our investors and partners.


Olshan Properties currently owns and/or manages a diverse portfolio of commercial properties with an approximate total square footage of 22 million. The company self-manages nearly all of its investments and partnerships through its retail, residential, office and hotel divisions. A dedicated staff of leasing, marketing, development, property management, finance and construction personnel continue to provide excellence in the asset management of our portfolio:


8 million SF of retail properties, containing regional centers, community centers, urban retail, and power centers.

14,000 multifamily residential units, including urban high-rise, suburban garden-style and townhome properties.

1,447 hotel rooms across our portfolio of owned and managed Hilton and Marriot branded properties.

3 million SF of office space in high-rise class A, mixed-use and suburban formats.

Lee Karlin


Lee Karlin has over thirty-three years’ experience managing the development and construction of more than $2.2 billion of projects in the hospitality, corporate, commercial, industrial, institutional and specialty industries. Mr. Karlin has served in roles ranging from Project Superintendent to Project Executive and Senior Vice-President for some of the region’s leading construction and real estate development firms providing oversight and support for project teams on multiple projects from inception until completion.


Mr. Karlin has a BS from the Rochester Institute of Technology and is a licensed NYC Department of Buildings Site Safety Manager.


Owner / Developer:
Haymarket Square Hotel LLC




CV Properties LLC
451 D Street, Suite 100
Boston, MA 02210



















Olshan Properties
600 Madison Avenue, 14th Floor
New York, NY 10022





























Harbinger Development
103 Central Street 
Wellesley, MA 02482




















Architect / Interior Design:
Group One Partners, Inc.
21 West 3rd Street
Boston, MA 02127





Construction Manager:

Suffolk Construction Company Inc.

65 Allerton Street
Boston, MA 02119
United States

























Structural Engineer:
McNamara / Salvia, Inc. 
160 Federal Street, 5th Floor
Boston, MA 02110


MEP / FP Engineer:
R.G. Vanderweil Engineers, LLP
274 Summer Street 
Boston, MA 02110


Civil Engineer:
Nitsch Engineering
2 Center Plaza, Suite 430
Boston, MA 02108


Landscape Architect:
Copley Wolff Design Group
10 Post Office Square, Suite 1315
Boston, MA 02109


Haley & Aldrich
468 Medford Street, Suite 
Boston, MA 02129


Lighting Consultant:
Beam, LTD. 
428 West Waverly Road
Glenside, PA 19038


Building Envelope:
Simpson Gumpertz & Heger
41 Seyon Street Building 1, Suite 500
Waltham, MA 02453


Code Consultant:
C3 Commercial Construction Consultant
313 Congress Street
Boston, MA 02210


Acoustical Consultant:
33 Moulton Street
Cambridge, MA 02138


Elevator Consultant:
Syska Hennessy
10 Post Office Square, Suite 725
Boston, MA 02109

Steve Eustis


Steve Eustis has more than 37 years’ experience managing the construction of over $3 Billion of large complex projects in the corporate, commercial, institutional, and specialties industries.


He has served as a senior executive for large construction companies including Gilbane Building Company and Skanska USA Building. Most recently he was 
a Business Unit Leader for Commodore Builders. 

Steve provides strong leadership that focuses on developing high performing teams and successful projects.

He has worked on several significant construction projects including the Miller Brewery in Ohio, the 53 State Street high rise office building in Boston, the new Providence Airport, the Weil Life Science Complex at Cornell University, the State of Massachusetts Data Center in Springfield, MA, the new Terminal A at Logan Airport, and reconstruction of the Cert designed BU Law School building.

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