Mission: To provide the highest quality workmanship and very best client service.

Vision: To be a regional leader in commercial and residential construction.

Our Promise:

  • Return calls promptly
  • Provide detailed & accurate estimates
  • Be on time
  • Ensure the project fits client needs and budget
  • Be professional, courteous and, responsive
  • Keep job sites clean, organized, and safe
  • Provide the highest quality workmanship
  • Complete projects on time and on budget

What We Do

As general contractors and builders we provide a full spectrum of design, building, restoration, and renovation services throughout Maine and New Hampshire.  From ground-up construction of high-tech commercial spaces and modern condos, to full scale historic restorations and construction of the finest residential buildings; we provide unparalleled service and results.

Residential & Commercial:

  • High-tech commercial buildings
  • New condo construction
  • Full scale historic restorations
  • Construction of the finest residential buildings
  • Remodels
  • Additions
  • New Construction
  • Condo Conversions
  • Restaurant or bar design and build out
  • Office design and build out
  • Entertainment rooms, lounges and bars
  • Custom kitchens
  • Media rooms
  • Great rooms
  • Amazing master baths
  • Finish basements
  • Finished room in attics or basements
  • Home Spas
  • Custom closets
  • Porches & Decks
  • New floor installs - hardwood, tile, cork, bamboo, commercial or carpets
  • Interior & exterior finish and trim work
  • New stair wells
  • Painting
  • Replacement Windows

Who We Are


Tom Gagne,
General Manager

Tom Gagne was born in Portland, Maine and has been in construction management and building practices for over twenty years. As lead project manager and business development partner for CornerStone Building & Restoration, Tom has found the perfect venue for his extensive experience in building beautiful spaces through creative problem solving, and the development of great relationships. He also practices music and falconry and lives in Cumberland with his wife and their three children.


Tom Landry,

Tom is an accomplished and respected Realtor®, entrepreneur, and developer. He is the founder of Benchmark Residential & Investment Real Estate (one of the state’s leading independent and non-franchised brokerages), CornerStone Building & Restoration (high-end residential and commercial design, build, and restore company), and several other companies and partnerships. Tom brings a breadth and depth of knowledge and creativity that’s truly rare to each project and to benefit every client. Tom is a Maine native and lives with his wife Amy and daughter Madelyn in a Victorian home they restored off Portland’s beautiful Back Cove.