Our Team

Lighthouse in Grand Haven, Michigan

Horizon Building Group

Horizon Building Group was founded by Robb Constantine and Lee Garrity. Robb and Lee had the opportunity to work together for several years and found that while their individual strengths and weaknesses differed, their respective commitments to honesty and integrity were aligned and unwavering. Those principles along with a passion to deliver successful construction projects on time and on budget inspired them to start a new company. The construction industry is very much a relationship-driven business, and Robb and Lee enjoy the relationships they have developed throughout their years in the industry. They don’t just want to be your builder; they want to be your partner. With a combined 40 years of construction expertise and a multi-faceted project portfolio, they are positioned to overcome the challenges of most any project. Their clients’ complete satisfaction is always their top priority and at the forefront of all they do.

About Robb

Robb graduated from Michigan State University with a Bachelor of Science in Construction Management. He has held a variety of positions in the construction industry including general laborer, superintendent, project manager, vice president, and president. He has also launched or acquired several construction companies in his career, filling, in some capacity, every role needed for the company to run successfully. Robb has also managed a wide range of project types including precast, steel, and wood-framed structures across several market sectors. While he is no stranger to commercial and industrial projects, he has become an expert in the multi-family sector, procuring and managing thousands of units throughout his career. He believes that just like every construction project is different, so is every client. The key to his success has not only been knowing every detail of his projects but putting that same energy into understanding his clients and their needs. Bringing value and delivering a great project are important, but a happy client is equally important. Robb’s passion for construction is in his blood – his grandpa drove bulldozers and his dad built houses. He feels that construction is an exciting process and ensuring that his clients share in that excitement is especially important to him. He believes that bringing comfort to his clients by being versed in the most current methodologies, products, and pricing, then communicating in a clear concise way that can be understood by all, is paramount. Through integrity, great communication, and accountability, the excitement of construction can be shared with everyone involved from inception to completion. In his free time, Robb enjoys spending time with his wife and family, finding new places to travel and adventure, and enjoying the great outdoors. Be it a hike in the woods or a day on the water with his favorite hardware, he is in his element. Robb also enjoys sporting clays, driving fast on the course, of course, and time on his tractor trying his hand at farming.    

About Lee

Lee graduated Summa Cum Laude from Lawrence Technological University with a Bachelor of Science in Construction Management and an Associates of Science in Construction Engineering Technologies. He has held a variety of positions in the construction industry ranging from assistant project manager and superintendent to general manager and vice president of construction. He has also managed a wide range of project types including high rise post-tensioned concrete, precast, steel, and wood-framed structures across several market sectors. Lee’s passion for the construction industry stems from the sense of pride that comes from driving by a completed project for years to come, reflecting on the relationships built, lessons learned, and memories made during the project’s construction. He believes that while challenging, construction should be an enjoyable process for all involved. Making a construction dream a reality can be a seemingly daunting process, and his top priority is ensuring that his clients are well informed and never feel overwhelmed. He accomplishes this through clear, consistent communication from pre-construction through closeout. In his free time, Lee enjoys vacationing with his wife and finding new trails to walk with his chocolate lab. He enjoys exploring the United States and Canada and visiting national parks. He has been to 47 of 50 states and 22 national parks throughout the US. He also enjoys classic cars, off-road driving, target shooting, and the occasional brewery. 

About Nate

Nate graduated from Central Michigan University with a Bachelor of Science in Construction Management. He has held positions in all phases of the construction process including laborer, estimator, superintendent, and project manager. He has managed projects ranging from wood and steel framing to high rise post tensioned concrete projects across many market sectors. He believes that while the end product is rewarding, working together towards the same common goal with clients, trade partners, teammates and many others from different walks of life is what makes the construction industry a special one. Nate shares a passion for all things construction and bringing projects to life with his attention to detail, communication, and approachability. In his free time, Nate enjoys spending time with his wife and family, being in the woods or on the water, or playing a round of golf. He also enjoys spending time in Michigan’s “up north” and exploring any place off the beaten path.

About Dave

Dave has 45 years’ experience in the construction industry doing projects from pole barns to hotels and everything in between. Despite his versatility, he spent 30 years of his career focused almost solely on multi-family construction. Aside from his construction knowledge, Dave is a savvy businessman having owned his own business for over a decade. While from Michigan originally, Dave spent much of his life in the mountain west. During that time, he
did what he loves most, fishing and side-by-side riding. As much as they enjoyed the mountains, Dave and his wife of 36 years moved back to Michigan a number of years ago to spend more time with their four children and six grandchildren. While he stays busy with family, you can still find Dave out on the water or riding trails in his free time.

About Steve

Steve has over 40 years’ experience as a superintendent, supervising projects across eight different states from Virginia to Wyoming. These projects included large renovations, multifamily complexes, strip malls, office buildings, and custom homes. Steve has always loved starting new projects and the sense of pride and accomplishment that comes from transforming a piece of land or an old building into something new! Steve grew up in Upper Michigan and graduated from Northern Michigan University. He has been married for 43 years and has three children who have blessed his wife and him with five grandchildren. Growing up in Upper Michigan, Steve fell in love with hunting and fishing at a young age. Bird hunting with his springer spaniels and spending time with his grandchildren are what he loves most!

About Brian

Brian graduated Cumma Sum Laude from Lawrence Technological University with a Bachelor of Science degree in Engineering Technology. Brian also graduated Cumma Sum Laude from Lansing Community College with an Associate of Science degree in Automotive Technology. Brian grew up learning the construction industry from his father who was a general contractor. Usually the only two working, Brian and his father built single family homes, garages, decks, and remodeled basements. As a Construction Superintendent, Brian has experience with multi-family wood-framed projects and light steel erection. Brian is a stickler for jobsite safety and cleanliness. He believes a quality job starts with a safe and clean jobsite. In addition to a construction career, Brian has experience in the automotive industry that includes engine and transmission testing on dynamometers, vehicle on-track testing, military wheeled and tracked vehicle testing, and even some yacht testing.In his free time, Brian enjoys traveling with his wife Teresa, often seeking out a few warm days somewhere south in the middle of a Michigan winter. Brian also likes to take his border collie/lab named Bozz for walks in the woods.

About Roger

Roger has held several positions in the construction industry. He started off in the maintenance field working his way from a repair technician to manager. He fell in love with the building industry and earned his Michigan Builder’s License. Roger worked as a framing foreman for five years on multiple large scale muti-family projects where his love for the industry grew more. He then worked as a general tradesman/site superintendent’s “right hand man” where he expanded his knowledge of interior finishes and the processes that it takes to complete a project from start to finish. In his free time Roger enjoys spending time with his wife and their 2-year-old daughter. Most of the time you can find him in the garage working on a vehicle or doing small projects!

About Marvin

Marvin was born in South Bend, IN and moved to Grand Rapids in his early 20s where he began his career in construction. Over the past 30+ years he has worked in several trades within the industry, but his favorites are framing and drywall. He has been married to his wife, Amanda, for 22 years and is the proud father of four boys – Matthew, Marvin, Maddox, and Marshall. They have all picked up on their father’s handiness and may well be the next generation of skilled tradesmen! When he’s not at work, Marvin enjoys floating down the river with his family and friends, taking his boys to the pool, and enjoying long walks to the park. Marvin describes himself as a construction worker by choice and a father and husband by heart. He wouldn’t change a thing!