Home Additions in Hilton Head

Adding Space That Belongs

When a growing family, a new home office, or visiting relatives start to strain your square footage, moving isn’t the only answer. An addition lets you stay in the neighborhood you chose while gaining the room you need. At Roberts Construction Company, we approach additions as architecture, not afterthoughts, designing new space that reads as though it was always part of the house.

Room Additions and Second Stories

Expanding outward or upward both have their place. Ground-floor additions suit larger kitchens, primary suites, and family rooms that open to the yard, while a second-story addition adds bedrooms and baths without giving up lot space. We assess your foundation, framing, and roofline to recommend the approach that makes structural and financial sense.

Where the existing structure allows, we can also bump out a single wall to enlarge a cramped room, a smaller project that delivers an outsized difference in how a space feels.

Sunrooms, In-Law Suites, and Bonus Rooms

Some additions answer a specific need. A sunroom captures Lowcountry light and views while staying comfortable year-round; an in-law or guest suite adds a private bedroom, bath, and sometimes a kitchenette for multigenerational living or rental flexibility; a bonus room over a garage becomes a studio, gym, or media space.

Each of these calls for its own balance of privacy, access, and utility connections, and we plan those details early so the finished room serves its purpose without compromise.

Matching New Construction to the Original Home

The mark of a well-built addition is that you can’t tell where the old house ends. We source siding, roofing, windows, and trim that match or intentionally complement the existing exterior, and we carry interior finishes, ceiling heights, and floor transitions through so the new space feels continuous.

Behind the finishes, we tie into existing electrical, plumbing, and HVAC systems thoughtfully, upgrading capacity where the added load requires it so the whole home performs as one.