Callahan Construction Managers (Callahan), a full-service construction management company that serves Greater New England and New York, celebrated the topping off of its 300 3rd Ave Project in Waltham, MA. The ceremony, held on October 6th, marked the placement of the final beam at the new life sciences building, which is scheduled for delivery in early 2022. Callahan, along with developer Lincoln Property Company, architect DiMella Shaffer, Iron Workers Local 7, AHA Consulting Engineers, and elected officials and city councilors, gathered to commemorate the significant milestone in the ongoing progress of 300 3rd Ave. Attendees were invited to autograph the final steel beam that was adorned with project team logos before it was placed on the building.

“We are thrilled to celebrate this pivotal phase in the construction of 300 3rd Ave,” said Patrick Callahan, President of Callahan Construction Managers. “Callahan’s life sciences construction portfolio continues to grow at a rapid pace, and reaching this milestone is the result of hard, efficient work by both our team and our excellent project partners. We look forward to delivering this dynamic suburban lab development soon and continued collaboration with all of our partners.”

After breaking ground in July 2020, the topping off marks the completion of the building’s vertical structure. The 140,000-square-foot life sciences building will offer high-demand lab space to a growing life science cluster in Waltham.  All four stories of flexible and customizable office and laboratory space will feature an expansive glass curtain wall that will wrap the façade, which faces the Route 128 corridor. Each floor will span 35,000 feet and will have bright light and expansive views from each of the workspaces. The building’s poured concrete foundation and steel frame concrete deck will be juxtaposed by a glass entrance accented by a natural wood ceiling, along with custom lighting. Finally, the building will include five levels of parking, two above grade and three below, as well as a mechanical penthouse and roof deck.”

Waltham has emerged as one of Greater Boston’s most active life sciences clusters. 300 3rd Avenue is located only 10 miles from Cambridge and Boston and is conveniently located off exit 27A on Route 128/I-95. Corporate neighbors include ThermoFisher, Sanofi, AstraZeneca, Shire, Deciphera, GSK, Alkermes, Immugen, PerkinElmer, Visterra and Exosome Dx.

For more information on Callahan Construction Managers and similar projects, visit https://callahan-inc.com.


Callahan Construction Managers (Callahan) today announces the groundbreaking of its latest project, The Mariner, an assisted living facility in Marblehead, MA. The 83,000 square foot, three-story wood framed building will include 61 assisted living units and 26 memory care units, with a mix of studio, one, and two-bedroom inventory. The Northbridge Companies, in partnership with Heather Cairns, Michael Lafayette and Philip Helmes, a local development team, is developing the building with EGA serving as the architect. The groundbreaking ceremony took place on September 9, 2021.  

“We are very excited to once again be partnering with Northbridge Companies on what we believe will be an extremely successful senior living facility,” said Patrick Callahan, President of Callahan Construction. “The Mariner is the first and only senior living community in Marblehead and we are thrilled to be able to bring this project to life and give seniors a top-tier option on the North Shore.” 

The Mariner captures Marblehead’s charm with lifestyle options that fit a range of retiree and senior needs. The New England colonial-style development will be built atop a 4.5-acre hillside on Pleasant Street and will offer walking paths, sitting areas, patios, and gardens. The Mariner will also offer a variety of services, activities, and amenities for residents, including a full-service restaurant, private dining, lounge, café, living rooms, beauty salon, health and wellness room, library, and movie theater. The facility’s ground floor will provide an area for those with memory care needs, while the first and second floors offer a combination of apartments including assistance options. 

Callahan has extensive experience working on high-end assisted living communities across Massachusetts and The Mariner is just the latest example. It is Callahan’s seventh project with The Northbridge Companies and second with EGA Architects. The project is scheduled for a February 2023 completion. For more information, please visit https://www.marinerliving.com/.  

Callahan Construction Managers (Callahan) along with developer Greatland Realty Partners, architect SGA and Iron Workers Local 7 commemorated a significant milestone in the ongoing progress of Revolution Labs with the topping off of the garage on Monday, September 13th.

“We are honored to play a role in the continued growth of the thriving life science market in collaboration with such valued partners”, said Patrick Callahan, President of Callahan Construction Managers.” “Following the topping off of the garage, we look forward to bringing this dynamic project to the finish line.”

Located at 1050 Waltham Street in Lexington, MA, Revolution Labs is a 180,000 SF office and lab building with a 442-space standalone precast garage. The project will host best-in-class amenity spaces including covered parking with a solar canopy and electric vehicle charging stations, shuttle service to the nearby Alewife MBTA station, an onsite café, fitness center, bike share, bike storage, lockers and showers, lounge areas and meeting space, an amenity deck with a fire pit, sport court, and a connection to more than four miles of nature trails along the Western Greenway.

The building will also include state-of-the-art, lab ready infrastructure and is targeting LEED Gold and Well Building certifications.

Revolution Labs is available for lease to leading life science companies and is on track to be ready for occupancy in the fourth quarter of 2022.

Callahan Construction Managers (Callahan) announces an exciting milestone reached in the construction and testing for Passive House Certification at Squirrelwood, an affordable housing development located in Cambridge, MA. 

The Passive House verification process consists of numerous inspections and tests that culminate in unit blower door testing and a whole building blower door test to confirm that the construction meetings the PHIUS minimal air infiltration standards. The blower door test results at 54 Market Street were 0.27 ACH50, making this building the 4th best performing multi-family building (excluding duplex style buildings) tested for PHIUS Certification in the United States, and the #1 best performing multi-family buildings on the east coast.

54 Market Street is the largest new building in the Squirrelwood project and has been built to PHIUS+ standards, ensuring maximum energy efficiency and resident comfort. Passive House construction adheres to five building-science principals: buildings are super insulated, have an airtight building envelope, high-performance windows and doors, energy recovery ventilation, and a minimal space conditioning systems.

“We’re proud to create housing in Cambridge that’s not only affordable but also built to the highest quality standards. Residents will enjoy lower utility costs and a healthy, comfortable living space, while our whole community benefits from more environmentally-friendly housing,” said Carl Nagy-Koechlin, Executive Director of Just-A-Start. “Achieving this milestone, despite the many challenges of the pandemic, truly demonstrates the power of partnership and our unwavering commitment to affordable housing and economic opportunity.”

“The spectacular results we witnessed at Squirrelwood were the product of a full team of skilled professionals, working together towards a common, clearly communicated goal. The teams from Callahan, Davis Square, New Ecology, and Just-A-Start threw themselves into the challenge, each working together to improve details, refine the execution, and shepherd the project from plans to reality. It was a pleasure to watch them work, and we are all extremely pleased with the results.” Doug Tierney, Owner’s Project Manager, Tierney Development Services, LLC.

Callahan Construction Managers (Callahan) announces that they have completed the Hilton Garden Inn Brookline. The project was developed by Claremont Companies who also own and manage the property, with Cambridge Seven Associates serving as the architect, Stantec for civil and landscape, Odeh on structural, and WSP as the MEP/FP engineer.

The 11-story, 111,000 SF, Hilton Garden Inn features 174 guest rooms.  Level 1 includes various amenities including a restaurant and bar, lounge areas, meeting room and 24-hour pavilion pantry.  Level 3, of the hotel, includes a fitness center, indoor swimming pool, and outdoor terrace. Additionally, a 29-space parking garage occupies the hotel’s second level, providing ease of access for guests.

“Callahan is thrilled to have been a part of this high-profile hotel project just outside Boston,” stated Steve Callahan, Vice President of Business Development at Callahan. “The Hilton Garden Inn’s location on the Brookline/Boston line will provide much-needed hospitality services to the Greater Boston area.”

The property sought to maximize space at the narrow .437-acre lot. A curved corner design draws attention to the building, which sits at the intersection of Brookline Avenue and Route 9. The building also features a glass façade.

Located at 700 Brookline Ave, the property is the former site of a Gulf gas station that was demolished in 2016. The building is conveniently located adjacent to the Longwood Medical area and one block to the Riverway T Station. 

Callahan Construction Managers (Callahan), a full-service construction management company that has served the New England and Northeast regions safely as a family business for more than 65 years, announced that it hosted a mandatory company-wide safety stand-down on Tuesday, March 16. During the stand-downs, teams at each Callahan jobsite reviewed hazards associated with the type of work they do and identified ways to eliminate them. The goal of the safety stand-down was to refocus the importance of safety, eliminate complacency, and reflect on hazards to make every Callahan jobsite safer. All Callahan project executives, managers, superintendents, and subcontractors participated in the stand down.

“Callahan is proactive when it comes to safety and we used this as an opportunity to refocus and avoid complacency and promote our zero-injury safety culture,” stated Justin Azbill, Director of Safety at Callahan. “We want to lead by example and do everything in our power to ensure every employee on site goes home safely at the end of the day.”

Stand-downs on each jobsite were led by Callahan Superintendents where the teams discussed complacency, situational awareness, fall protection, hand injuries, and COVID-19 compliance. Each subcontractor team also discussed hazards associated with the type of work they do and identified ways Callahan can help them eliminate job hazards. Callahan’s objective is to use this information to improve communication across all jobsites to continue to build a solid zero-injury safety culture across the entire company, which had a 98% rate of zero lost time incidents in 2020.

Callahan uses safetyreports.com safety software to identify key data, including the most common times of day injuries occur and most commonly injured body parts to further assist with their safety initiatives and campaigns to reduce injuries and even near-misses. This data will form the foundation for their Safety Week focus areas and will continue to inform company decisions.

“It’s critical to the Callahan culture that jobsite safety is always top of mind so that we reduce hazards and eliminate injuries,” Azbill continued. “By focusing heavily on this, we’re not only protecting our employees on jobsites right now, we’re also focusing on the future and how we can continue to improve our procedures to eliminate injuries.”

Callahan was also recently awarded an Occupational Excellence Achievement Award, a Million Work Hour Award, a Callahan Site Division Perfect Record Award and a Significant Improvement Award from the National Safety Council. Five employees also received Safety Service Awards.

Callahan Construction Managers (Callahan) is proud to announce they have begun construction on 5 Washington Street in Brighton, MA. The project is being developed by Washington Square Ventures (WSV) with Stantec serving as the architect.

The development will occupy a 43,500 square foot parcel of land that sits on the border of City of Boston and the Town of Brookline. The property is in Boston’s Brighton neighborhood, and is two city blocks away from Boston’s Green Line rapid transit system and next to a Whole Foods Market. Quickly becoming a live-work-play destination, Brighton and the Washington Square neighborhood are now home to numerous local restaurants and lifestyle amenities.

Three separate structures were demolished on the site, a gas station, an auto repair shop, and office space and the new 131,500 square foot, five-story building with a basement will be constructed in their place.

This mixed-use building will host apartment and retail parking totaling 127 spaces, approximately 12,500 square feet of retail on the ground floor, and 108 residential apartments on floors two through five with 18 units being designated for affordable housing. Building amenities will include a fitness area, clubhouse lounge, entertaining kitchen, expansive workshare, and home office space. A large outdoor terrace will also be included and will feature two quartz-topped bars, semi-private cabanas, gas grills and fireplaces.

“Callahan is proud to be a part of this dynamic project,” said Patrick Callahan, President at Callahan Construction Managers. “This development will contribute to the growth of the Washington Square/Corey Hill neighborhood and give residents an urban living experience just minutes from downtown Boston.”

 “My partner Matt Faris and I are pleased to see our permitting and design efforts come to fruition at 5 Washington”, said Justin Krebs, Co-Managing Partner at Washington Square Ventures. “We appreciate our collaboration with the community and BPDA to redevelop a long-blighted gas service station and vacant office building into a forward-thinking mixed-use development, including new apartments and a CVS, adding to the affordable housing stock while enhancing retail amenities for our tenants and the neighborhood.”

“Stantec is excited to see this project happen after several years of active community engagement and design review by the City of Boston,” said Mark Soltysiak, Senior Associate at Stantec. “The building will fit proudly into the neighborhood and will add a small pocket park for all residents and neighbors alike to enjoy.”

Callahan Construction Managers (Callahan), has begun its fourth assisted living project with Benchmark Senior Living, a trusted provider of senior living services throughout the Northeast.  

The new Benchmark  community will be located on Washington Street in Hanover.  There will be 97 senior living units, with 114 total beds, over 91,000 square feet. Featured amenities will include a library, full-service dining room, activity rooms, wellness rooms, salons, and outdoor courtyards.   

In addition to the Hanover property, Callahan has also completed three properties for the company, Benchmark Senior Living at Split Rock in Shelton, CT, Benchmark Senior Living at Woburn in Woburn, MA, and Benchmark Senior Living on Clapboardtree in Norwood, MA

“We value our continued relationship with Benchmark Senior Living and are pleased to have delivered three successful properties for the company and are excited to deliver the fourth,” said Patrick Callahan, President of Callahan Construction Managers. “It is especially fulfilling to be involved in such projects that serve to benefit members of the community and provide exceptional care.”

“We are thrilled to be expanding our senior living offerings to the residents of the South Shore and beyond. Hanover is an ideal setting for the 64th Benchmark community and will possess the beautiful surroundings and leading-edge services our residents and their families have come to expect,” said Sarah Laffey, Chief Financial Officer and Senior Vice President of Benchmark Senior Living.  Benchmark of Hanover will be the company’s second South Shore community, along with Benchmark Senior Living at Plymouth Crossings. “We look forward to continuing our successful relationship with Callahan.” 

Working in partnership with Udelsman Associates, construction on the assisted living property broke ground in January 2021 and is on track for an early Summer 2022 completion.

White Plains, NY – Callahan Construction Managers announced that they have welcomed Mark Zych to the firm as a project executive.

Mark joins our growing New York team and will provide overall direction and supervision of projects, establishing operational priorities and maintaining effective relationships with our clients in the Tri-State area. He has a proven track-record of service to growing organizations that includes business development; operational planning and risk management; and directing projects through all phases of planning, design, and construction.

“In a year that’s been challenging for many businesses, I’m excited to be joining a group of creative and ambitious colleagues here at Callahan as we continue to build great projects and strong relationships,” said Mark. “I’m looking forward to serving new clients—as well as those with whom Callahan has earned its reputation as a leading construction partner for multi-family and purpose-built housing—as we expand our operations throughout the New York, New Jersey, and Connecticut tri-state region.”

Mark has more than 20 years of diverse leadership experience in real estate development and capital projects construction and has spent the past 10 years working with clients throughout New York’s Hudson Valley.

Mark earned a degree in Civil Engineering from The University of Delaware.

Callahan Construction Managers (Callahan) is pleased toannounce its partnership with Quincy Public Schools, for its sponsorship of “Trades Beyond the Bell,” an after school workforce training program. “Trades Beyond the Bell” is a Callahan sponsored program that came to fruition through the Quincy School ~ Community Partnership (QSCP), a collaboration between Quincy Public Schools, individuals, organizations, and the business community. The program is designed to support high school students by providing valuable training opportunities and connections to real world employment opportunities in the construction field.

For Trades Beyond the Bell, Callahan collaborated with Quincy Public Schools Career Vocational and Technical Education (CVTE) Program to offer students the opportunity to earn their required shop hours, experience hands-on engagement, gain technical skills, and improve safety awareness.  A President’s Path Partner of the QSCP, Callahan is providing direct financial support to the Quincy School ~ Community Partnership to fund initiatives such as teacher mini-grants and purchasing state-of-the-art tools and technology.

“This project is part of Callahan’s greater commitment to giving back to the community,” says Callahan President Patrick Callahan. “The Trades Beyond the Bell Program is significant in shaping the incoming workforce and providing students within the local community with valuable life skills that they can use and turn into well-paying careers beyond high school.”

Career Vocational and Technical Education programs are a crucial element to the United States work force. According to the Association for Career & Technical Education, “Three million workers will be needed for the nation’s infrastructure in the next decade, including designing, building and operating transportation, housing, utilities, and telecommunications.” Not only does offering programs such as “Trades Beyond the Bell” provide guidance and opportunity for young individuals, but it also helps to fill vacancies in the job market.

“Quincy High School Career Vocational and Technical Education Program is thrilled to partner with Callahan to foster the continued development of our students,” says Keith Segalla, Executive Director of Career Vocational and Technical Education for Quincy Public Schools. “Trades Beyond the Bell is an invaluable opportunity for students to grow and gain real-world working experience.” 

As part of the Trades Beyond the Bell partnership with Quincy Public Schools, Callahan Construction Managers presented a check for $10,000 to the Quincy School ~ Community Partnership. (photo attached). Callahan has been part of the Quincy School ~ Community Partnership for the last 5 years.

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