
Who it's for
Remote employees tired of the kitchen table. Therapists and counselors who need a quiet, private room for sessions. Creators who need a studio. Small business owners who need a real office without a commercial lease. If your work follows you into every room of the house, it is time it got its own building.
Why separate wins
There is a psychology to the commute, even a twenty-step one: you leave the house, you arrive at work. The door closes and the workday starts; the door opens and it ends. Evenings feel like evenings again. And on video calls, a real office with a door beats a bedroom background every time — clients and coworkers notice.
What the building needs
A backyard office is simpler than a full home — but it is still a real building with power, internet, heating, and cooling, not a shed with an extension cord. How that gets built in — wiring, insulation, and systems — is covered in our home office ADU building guide. This page is about the work life; that page is about the construction.
Small works — and small saves on fees
An office does not need to be big: a 200- or 300-square-foot studio fits a desk, a meeting chair, and storage with room to breathe. See our small ADU guide for how much living fits in a small footprint. Maryland sets no minimum ADU size — and under state law, ADUs under 750 square feet pay no development impact fee or building excise tax at all.
Sources: Chapter 197 of the 2025 Laws of Maryland (HB 1466/SB 891), §§4-501, 4-504(C)(1), 4-506.
Built for the job after this one
Jobs change. A permitted ADU office does not care: when the remote job ends, the same space becomes a guest suite, a rental, or an art studio — a backyard cottage with a future. That is the honest reason to build it as a legal ADU instead of an unpermitted shed: permitted space has a future; unpermitted space has a problem.
What it costs
A backyard office costs like a small ADU. Makara ADU quotes $150K–$350K to build an ADU (per The Banner); a simple studio office — one open room, no full kitchen — is a simpler build than a full one-bedroom ADU. For a rough per-foot sense, Powell Custom Homes gives an industry-wide figure of $150–$300 per square foot.
A note on prices: material costs move up and down, and no two lots need the same work. Treat any numbers on this page as starting points, not quotes. Your written estimate after our free lot walk is the real number for your project.
Sources: Makara ADU (quoted in The Banner); Powell Custom Homes (industry-wide figure).
Check it yourself — or skip the homework
Don't take our word for any of this. Zoning and permit questions: Charles County Planning & Growth Management, 301-645-0692. Well and septic questions: Health Department, Division of Environmental Health, 301-609-6751. The county's published draft rules are Bill 2026-06 / ZTA 25-189 ("Flexibility for Accessory Dwelling Units"); the state law is Chapter 197 of the 2025 Laws of Maryland (HB 1466/SB 891).
Or skip the homework: call (240) 222-5082 and we'll walk your lot free and tell you what your county allows — before you spend a dollar.