GSPH has been helping building owners and contractors in New Hampshire since 1983

Providing mechanical construction services in the form of new construction, renovations, additions and system upgrades. We are able to deliver projects of almost any size and customization level through multiple different approaches. We have successfully delivered Design-Build, Design Assist and Bid-Plan-Spec projects across the state. Regardless of which model is used, we deliver on time and on schedule. We believe in and foster a construction team approach when working with other construction partners.

In addition to the technology we employ (CAD/BIM, Pre-Fabrication, Trimble) our overall safety record helps provide lower costs, less interruptions and a safer work environment for everyone on site. Call us today for commercial construction services in New Hampshire.

  • In business since 1983
  • Full mechanical contracting capabilities
  • Excellent relationship with suppliers
  • Large flexible workforce
  • Solid financial backing
  • Talented In-house design teams
  • Energy efficiency concentration, priority, focus...
  • Excellent long-term client and vendor relationships