Planning a home addition in Maryland means juggling an architect, an engineer, a permit expediter, and a contractor — unless one team handles all of it. Sonny’s Renovations is a veteran-owned design-build firm in Fort Washington, MD that designs, permits, and builds home additions across Maryland and Washington, DC under one contract. From the first sketch to the final walkthrough, you deal with one accountable team.
Types of home additions we design and build
- Room additions — family rooms, primary suites, and expanded kitchens that tie seamlessly into the existing structure and rooflines.
- Second-story additions — double your footprint without losing yard. We evaluate the existing foundation and framing before we draw anything.
- Bump-out additions — a smaller, budget-friendly way to gain 40–150 square feet for a bigger kitchen, bath, or breakfast nook.
- In-law suites and ADUs — accessory dwelling units and multigenerational suites with their own entrance, bath, and kitchenette.
- Garage and porch conversions — turn underused square footage into conditioned living space.
What a home addition costs in Maryland
Every addition is priced from real drawings, but these are the typical ranges Maryland homeowners should plan around: bump-outs often land in the $30,000–$80,000 range, full room additions roughly $80,000–$200,000 depending on size and finishes, and second-story additions or ADUs more, driven by structural and mechanical scope. During our Budget step you get transparent pricing — with financing options — before anything is built, so there are no mid-project surprises.
One team, one contract, five steps
- Discover — free consultation. We walk your scope, goals, and site conditions.
- Design — concepts, drawings, and material selections, coordinated by one team.
- Budget — transparent pricing with financing options before anything is built.
- Permit — we handle drawings, submissions, and inspections across Maryland and DC.
- Build — one crew, one warranty, one accountable team through final delivery.
Where we build additions
We’re based in Fort Washington and build additions throughout Prince George’s County — Upper Marlboro, Bowie, Clinton, Accokeek, National Harbor, Mitchellville, Landover, Indian Head — plus Charles County (Waldorf), Southern Maryland, Montgomery County, and Washington, DC. If you’re weighing a second-story addition in Maryland or an in-law suite anywhere in the DMV, we’ll tell you honestly what your structure and lot can support.
Why homeowners choose a veteran-owned builder
Sonny’s is veteran-owned and runs projects with military discipline: a plan before action, clear communication, and accountability from the first sketch to the final walkthrough — not just after the drawings are done. We’re licensed, insured, and experienced across residential, commercial, and government construction.
Home addition FAQs
Do I need a permit for a home addition in Maryland?
Yes — any addition that expands the footprint or adds structure requires county permits and inspections. We prepare the drawings, submit them, and manage inspections as part of the project, whether that’s Prince George’s County, Charles County, Montgomery County, or DC.
How long does an addition take?
Design and permitting typically run 2–4 months depending on the county; construction on most room additions runs 3–5 months. Second-story additions take longer. You’ll have a realistic schedule before we break ground.
Can my house support a second story?
Many Maryland homes can, but it depends on the foundation and existing framing. We evaluate that up front during the free Discover visit — before you spend anything on design.
Start your addition
Get a free consultation on your home addition anywhere in Maryland or DC. Call (301) 648-3181 or start your project online. You can also explore our kitchen remodeling and bathroom remodeling services — many additions include both.
