More room to live — additions built to match your home.
Outgrown your space but love your street? Add the room, not the move. Second stories, in-law suites, and bump-outs designed so the seam disappears — inside and out.
- Design–build since 2007
- Seamless match, inside & out
- Keep your street & your rate
- Fixed-scope pricing
Get your free addition consultation
Tell us the room you need. We reply within two business days.
The new space should look
like it was always there.
A seamless match
The hard part isn't the new room — it's marrying it to the existing house. We match rooflines, trim profiles, and materials so nothing looks bolted on.
Stay where you are
Add the square footage your family needs without leaving the neighborhood you love or the mortgage rate you locked in.
One team, structural to finish
Engineering, permits, framing, and finish all under one roof — so your addition is sound, legal, and beautiful.
More room in
three steps.
Map the need
We walk your home and lot, understand the space you're missing, and show you where and how it can grow.
Design & match
We design the addition to disappear into the existing home, settle every detail, then build it on a clear schedule.
Move right in
We hand back a bigger home that feels original — same character, more room, fully warrantied.
Emerald II · Outdoor LivingIndoor-outdoor space,
done right.
Covered living, fireplaces, and a 30-ft accordion glass wall that merges inside and out. Whether it's a second story or a multi-season porch, we build additions with the same craft as our custom estates.
Families who found
the room they needed.
“⭐⭐⭐⭐⭐ We had a fantastic experience working with Brian and Ashley at Summit Design Build. Our project included the demolition of an existing home, full design of new plans, and construction of a new house, and their team handled every step with professionalism and expertise. Brian and Ashley brought a tremendous amount of knowledge and creativity to the process. They were highly collaborative, always willing to listen, share ideas, and work through challenges together to find the best solutions. That approach made what could have been a stressful process much more enjoyable. We truly appreciate their partnership throughout the project and are very pleased with the final result. I would highly recommend Summit Design Build to anyone looking for a thoughtful, experienced team to guide them through the design and construction process.”
“I got approval from the city of Roswell to build an 700sqft ADU (carriage/tiny house). I met with about 5 builders before deciding on Summit Design & Build and I am very happy with my decision. Brian and Ashley Robison have been great to work with. They have listened to what I would like but also made some great suggestions that I would not have thought of to make my carriage house even better. I highly recommend them if you want to build a new home or for a major renovation.”
“Brian and his entire team are incredible. His knowledge and honesty were truly priceless during our build. Summit Design and Build listened to our needs and exceeded every expectation. From the grading of the steep rough lot to the permits for the boat dock, every detail was managed with professionalism and expertise.”
Addition
questions.
That's the whole point. We match rooflines, brick or siding, trim profiles, and finishes so the addition reads as original — inside and out.
Second stories, primary-suite additions, in-law and guest suites, bump-outs, sunrooms, and multi-season porches. If you need the room, we can add it.
Yes. As a design-build firm we manage engineering, permitting, and construction together, so your addition is structurally sound and fully code-compliant.
Usually not. We seal off the work area and phase the build so your family can stay in the home through most of the project.
South Atlanta and the greater metro — Henry, Clayton, Fayette, Coweta, and surrounding counties from our Jonesboro studio.
Add the room,
not the move.
Tell us the space you need. We'll walk your home, show you where it can grow, and give you a clear plan and price — no pressure.
Get your free addition consultation
Tell us the room you need. We reply within two business days.