Boston Construction & Design Experts! We are an award-winning design/build firm dedicated to innovating and diversifying Boston's built environment through High-Performance and Passive House building.

Our Services

Construction Management
Lake Winnipesaukee Passive House

Passive House Building

There is a need for greater energy efficiency and green building practices within the Boston construction industry. We want to do our part in reducing emissions and creating buildings that improve the health and well-being of those who inhabit them. So, we design and build according to passive house standards.

We also recognize the benefits that high performance and passive house buildings provide. Not only are they better for us and for the environment, they also happen to be very cost-effective. Haycon is committed to creating spaces that provide a high quality of living at a reasonable cost.

Custom residential NH passive house exterior
NH Passive House


Haycon provides high-quality construction services and expert craftsmanship. Depending on your needs, Haycon can function as your design collaborator, construction manager, and/or general contactor.

Our portfolio spans a diverse scope of design and construction services, including: custom residential, historic preservation, commercial, multifamily residential, and remodeling projects. However, we are currently focused on Passive House or high-performance, midsize multifamily projects and commercial builds.

We pride ourselves on our ability to provide quick and cost-effective services that our clients love, without compromising on quality. Take a look at our portfolio to see what we’re capable of. We’ll let our work speak for itself!

Our Office


- Danny Moll of Arx Urban

"Haycon has been instrumental in executing our vision, supporting our preconstruction efforts and fitting seamlessly into our project team from the start. The performance of this property speaks for itself as we are on schedule and on budget despite delays and complications as a result of the COVID-19 pandemic. Patrick’s leadership is only exceeded by his trustworthiness and dedication to our goals, and his staff have followed suit. The entire team possesses the necessary experience to execute effectively and has catered to our unique reporting requirements along the way. "

SIGA logo
- Kenneth Keifer of SIGA North America

"Another great project by Haycon. They keep advancing and improving their builds. Every step of the way, they learn and improve. They definitely don't use the phrase 'We've been doing it this way for 30 years."

Monte French Design Studio logo
- Monte French of Monte French Design Studio

"Shout-out to Patrick Haydon and the Haycon team for yet another well-crafted project!"

We look forward to doing business with you!