Skip to main content
Dennis Gallagher Construction, Northport, NY.


Gallagher Construction has been in business for over 5 years. Dennis and his team do everything and anything from custom home builds to renovations, to a new kitchen! Call today for a quote and more information.
Services Provided
Accessory Dwelling Units (ADUs), Barn Design & Construction, Carport Installation, Custom Home, Demolition, Drafting, Earthquake Retrofitting, Energy-Efficient Homes, Fireproofing, Floor Plans, Foundation Construction, Garage Building, Green Building, Guesthouse Design & Construction, Handicap-Accessible Design, Historic Building Conservation, Home Additions, Home Extensions, Home Remodeling, Home Restoration, House Framing, House Plans, Insulation Installation, Land Surveying, Log Home Construction, Modular Home Additions, Modular Home Construction, Multigenerational Homes, New Home Construction, Passive Solar Heating & Cooling, Pool House Design & Construction, Prefab Houses, Project Management, Site Planning, Site Preparation, Storm Shelter Construction, Sustainable Design, Tiny House Construction, Universal Design, Waterproofing
Areas Served
Asharoken, Brentwood, Centerport, Central Islip, Centre Island, Cold Spring Harbor, Commack, Cove Neck, Deer Park, Dix Hills, East Northport, Eatons Neck, Elwood, Fort Salonga, Ft Salonga, Greenlawn, Halesite, Hauppauge, Head of the Harbor, Huntington, Huntington Bay, Huntington Station, Islandia, Kings Park, Laurel Hollow, Lloyd Harbor, Melville, Muttontown, Nesconset, Nissequogue, Northport, Old Bethpage, Oyster Bay Cove, Plainview, Ronkonkoma, Saint James, Smithtown, South Huntington, Stony Brook, Syosset, Village of the Branch, West Hills, Wheatley Heights, Woodbury
Houzz Pro Software User
10 Ideabook Saves

Start Your Project Today

We care about your privacy. Please don’t submit sensitive information such as social security numbers, credit card or bank information.
I agree that Dennis Gallagher Construction can email and call me in response to my inquiry, as well as with tips and offers for similar services.