ADU Design & Planning in Waldorf, MD

Designed for Your Lot, Not a Catalog

Good ADUs are drawn, not ordered. We turn your feasibility study into a site plan, floor plan, and elevations — drawn around your lot's shape, your county's rules, and the way you'll actually live in the space.

Free on-site estimates · No-pressure advice · Waldorf and Charles County, MD

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Let's talk design — tell us about your lot and what the space is for.

Bright finished ADU living room with open layout

What design includes

Site plan — where the ADU sits on your lot, with setbacks drawn in
Floor plan — every room, sized to how you'll actually use it
Elevations — what it looks like from the street and the yard
Finish selections — fixtures, floors, cabinets, colors

Designed to the rules, not around them

Two rules shape the drawings in Charles County. First, if the ADU attaches to your house, the entry and stairs can't be visible from the street (the draft's exact words: entry/stairs not visible from street view). Second, Maryland state law bans the county from judging your design on vibes — "neighborhood compatibility," aesthetics, and "adverse impacts" are prohibited as criteria; only objective, measurable rules (massing, entrance locations, square footage, utility connections) are allowed. That means a compliant design gets judged on the tape measure, not on taste.

Sources: Charles County Bill 2026-06 / ZTA 25-189 (published draft), §3.01.700.I; §4-504(C)(5), (D)(5) (Chapter 197 of the 2025 Laws of Maryland (HB 1466/SB 891)).

How long design takes

One established DMV builder (Excell Homes) publishes 2–3 weeks for design as part of its 5–7 month start-to-move-in breakdown. That's their number, not a promise — every project differs, and revisions add time. Our rule is simple: we don't rush the drawings, because a rushed plan becomes a slow permit and a painful build.

Matching your house

The ADU should look like it belongs. We draw roof lines, siding, and trim to echo your existing home — close enough that the two buildings read as one property, not a shed that landed in the yard. A custom-designed ADU costs more than a prefab on paper, but it fits real lots with real quirks — slopes, trees, odd setbacks.

What we need from you

Three things: who will live there (a parent moves differently through a kitchen than a renter does), your honest budget ceiling, and your must-haves versus nice-to-haves. Everything else — code, setbacks, the boring parts — is our job.

Check it yourself — or skip the homework

Zoning and permit questions: Charles County Planning & Growth Management, 301-645-0692. The county's published draft rules are Bill 2026-06 / ZTA 25-189.

Or skip the homework: call (240) 222-5082 and we'll talk through what your lot can hold — Waldorf and surrounding towns. Start with a free feasibility study if you haven't yet.

Questions homeowners ask us

Do I need an architect?

Not separately. Our design step produces the site plan, floor plan, and elevations the county needs. If your project is unusual enough to need stamped engineering, we'll tell you during design — before you've paid for permits.

Who draws the site plan?

We do, drawn to your lot's actual measurements from the feasibility study — setbacks, existing buildings, driveways, and the ADU's exact footprint.

Can the ADU match my house?

Yes — that's the default, not an upgrade. We echo your roof lines, siding, and trim so the property reads as one. The county's draft rules only require that an attached ADU's entry and stairs not be visible from the street (Bill 2026-06 / ZTA 25-189, §3.01.700.I).

What if the county rejects the design?

We design to the published draft rules from the start, so rejections are rare. If a reviewer flags something, we revise and resubmit — Maryland law bans the county from rejecting designs on subjective grounds like "neighborhood compatibility" (Chapter 197, §4-504(C)(5), (D)(5)), so disputes are about measurable things we can fix.

How many revisions do I get?

We revise until the design is right — then you sign off in writing. After sign-off, changes are possible but priced before we make them, so your budget never moves without your approval.

What happens after you reach out

No mystery, no sales script. Here is the whole path from first call to move-in day.

1You reach outCall or send the form. Tell us about your lot and what you want the space for — a parent, rental income, a home office.

2We walk your propertyFree visit. We check setbacks, access, slope, trees, and utilities, and tell you honestly what fits.

3You get a plan and a priceA site plan and a written estimate for your lot. No pressure, no obligation, no fine print.

4Permits, then buildWe handle the Charles County paperwork and follow-ups. Then our partner builders build it.