Dellbrook | JKS
About
Dellbrook | JKS is a Quincy-based general contractor and one of the largest construction companies in the Northeast. It builds large commercial and multi-family projects as well as smaller academic and healthcare renovations for public and private clients. The company works through what it calls a Team Concept, pairing proven construction methods with newer ways to deliver quality, savings and schedule efficiency, and it relies on long-standing relationships with experienced subcontractors to finish projects on time and on budget.
Its executive leadership stays closely involved in day-to-day operations, and the firm describes itself as a group of construction professionals guided by family values, honesty and relationship-building. Projects are managed to keep disruption to clients’ ongoing operations to a minimum. Dellbrook also puts weight on giving back through volunteer work, donations and service on nonprofit boards, and it is hiring superintendents, project managers and other skilled construction professionals to join its team.
What to Know
- The Boston Business Journal ranked it the seventh-largest general contractor in Massachusetts in 2025.
- Engineering News-Record has ranked it among the top 400 contractors in the country for 12 years.
- It has appeared on the Boston Business Journal’s list of largest corporate charitable contributors every year since 2018.
- Training Magazine named it to its 2024 list of the top 105 training companies nationwide.
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