HYM and its principals have a long and successful track record in planning, permitting, financing, constructing and managing mixed-use developments in Greater Boston. HYM’s success is directly related to the expertise and skill of its professionals and to HYM’s comprehensive community process, which engages all stakeholders including neighborhood groups, abutters, local businesses, municipal departments, state agencies and elected officials. HYM is currently leading the development of over nine million square feet of mixed-use development in Greater Boston. HYM strives to have its projects connect to, become part of and improve the communities within which they are located.

Thomas N. O'Brien

Founding Partner
Managing Director

O’Brien previously served as a Managing Partner for JPI, a national owner of multifamily communities, and as a Managing Director for Tishman Speyer. O’Brien also led the Boston Redevelopment Authority from 1994 to 2000, overseeing the development of over 12 million square feet of projects. O’Brien serves on the Board of the Taubman Center for State and Local Government at Harvard University and as Vice Chair of the Board of Overseers of The Anti-Defamation League of New England. He was appointed to the Board of the Massachusetts Housing Finance Agency in 2011 and to the Board of Trustees of the Rose F. Kennedy Greenway Conservancy in 2016. O’Brien is a graduate of Brown University and Suffolk University Law School.

Paul Crisalli

Director of Operations

Crisalli has over thirty-seven years of real estate development and operations experience in commercial and multifamily properties. Crisalli previously served as Operations Partner and Senior Vice President for JPI where he was directly responsible for all development and investments in the New York Region and oversaw the design and development of multifamily projects in JPI’s Northeast Region. He is a member of the National Society of Professional Engineers and a member of the US Green Building Council. Crisalli is a graduate of Polytechnic Institute of Brooklyn and is a Professional Engineer.

Douglas J. Manz

Director of Development

Manz previously served as a Development Partner for JPI and Vice President of Development for Northland Investment Corporation where he focused on the permitting and development of high-rise, mid-rise and low-rise multifamily projects. Prior to that, he held various positions with Leggat McCall Properties in Boston. In 2013, Manz was appointed to and served on the City of Cambridge Transportation Advisory Committee and is a member of ULI and NAIOP. Manz is a graduate of Cornell University and the Harvard University School of Design.

Twenty|20 at NorthPoint
The Residences at Boston Landing
80 Guest Street at Boston Landing
Bulfinch Crossing