Barndominium Builders in Montgomery County, Maryland
Buyers looking at barndominiums in Montgomery County, Maryland are usually looking upcounty. The D.C. suburbs fill the southern half, and the open land sits in the Agricultural Reserve and the rural areas around Damascus, Poolesville, Beallsville and Dickerson. That land is real but tightly held: zoning in the Reserve allows one house per 25 acres, so the question is rarely whether a shop house fits, and usually whether the parcel carries a buildable lot at all. One county department runs most of the process. The Department of Permitting Services (DPS) issues the building permit for a new home, and the same department, not a separate health office, handles the well permit, the septic permit and the soils testing that decides whether a lot without sewer is buildable. M-NCPPC and WSSC Water also review a new-home permit before it issues. Barndominium kits suit an owner who has the lot and wants a steel or wood shell raised on it; a custom plan fits the living space and the shop to the setbacks, the septic area and the slope. Send us the parcel first, and we will check the zone and the soils history before anything is drawn.
Montgomery County at a glance
- Government
- County
- Building permit
- County permit office
- Land use
- County zoning
- Wastewater
- Septic via the county permit office
- Private wells
- Well permits from the county permit office
Barndominium Kits and Barndominiums for Sale Near Montgomery County
Finished barndominiums rarely come up for sale, so buying one usually means one of two routes: a steel or pole barn kit delivered to land you own, for an owner or a hired crew to put up, or a new build on your parcel from plan to move-in. A custom plan fits the shop bay and the living space to the lot. Either way the land sets the budget more than the floor area does, so each option is priced against your site rather than a rate card.
Barndominium Kits
Barndominium kits for sale in Maryland: steel and pole barn shell packages for your land, and how a kit differs from a modular or manufactured home.
Custom Plans
Custom barndominium plans in Maryland: floor plans, 3D views and a permit-ready drawing set built around your land, your shop and your budget.
Barndominium Builders and Pole Barn Homes Near Montgomery County
A pole barn home sets its frame on posts and trusses (the engineering term is post-frame), which often suits a simple, wide layout with a shop bay under the same roof. A turnkey build takes the project from the pad to the finished house. Whether either fits your parcel comes down to the zoning, the septic and the water, set out below.
Turnkey Builds
Turnkey barndominiums in Maryland: land to move-in under one contract, from site work and septic coordination to the finished, inspected home.
Pole Barn Homes
Pole barn homes in Maryland: wood post-frame barndominiums built as permitted houses, from shell to finished home, with or without a shop.
Building in Montgomery County: Permits, Zoning, Septic and Wells
Four questions decide whether a barndominium works on a parcel before any steel is ordered. Here is who answers each of them in Montgomery County, taken from the office or document that publishes it. Rules change, so check them again against your parcel before anything is drawn.
Montgomery County Department of Permitting Services, Residential Construction
DPS issues the permit for a new detached house. At application it expects the right-of-way and sediment control permits to be applied for, and it lists the electrical, mechanical, well, septic and fire protection permits a new home needs. WSSC and M-NCPPC must finish their own reviews before the permit is issued. Some of the county's municipalities add a permit or approval of their own, so check the town first.
Source: Residential New Homes, Single Family and Townhouses Permit Process, Department of Permitting Services (montgomerycountymd.gov)
Montgomery Planning (M-NCPPC), with zoning review by the DPS Zoning Division
Montgomery Planning describes a 93,000-acre Agricultural Reserve covering almost a third of the county. In its Agricultural Reserve zone, housing is capped at one dwelling unit per 25 acres, though a single lot can be as small as one acre. The Rural and Rural Cluster zones allow one unit per 5 acres. Development rights are moved out of the Reserve through the transfer of development rights program.
Source: Agricultural Reserve Planning, Montgomery Planning (montgomeryplanning.org)
Montgomery County Department of Permitting Services, Well and Septic
DPS says a property that cannot get public sewer must pass water table tests and percolation or sand mound tests, which establish a sewage disposal area, before it can be considered buildable. A septic permit from DPS is then needed to install the system for a new home.
Source: Soils Testing Permit Process, Department of Permitting Services (montgomerycountymd.gov)
Montgomery County Department of Permitting Services, Well and Septic
A DPS well permit is required before any well is drilled, and a State drilling permit is also needed, which the licensed well driller submits to DPS. Applications are made online, and DPS says complete ones are generally issued within about two weeks. The permit is valid for twelve months.
Source: Well Permit Process, Department of Permitting Services (montgomerycountymd.gov)
- The wet season for soils testing
- DPS allows water table tests only in a declared wet season, typically 1 February to 15 April. On its soils testing page, read on 27 September 2026, DPS said the 2026 wet season remained closed because water table levels were too low, and that it was no longer taking applications for it.
- The Agricultural Reserve
- The County's Office of Agriculture says the Agricultural Reserve was created in 1980, covers 93,000 acres, and that its zone limits development to one house per 25 acres.
Source: Soils Testing Permit Process, Department of Permitting Services (montgomerycountymd.gov)
Source: The Ag Reserve, Montgomery County Office of Agriculture (montgomerycountymd.gov)
Metal Building Homes Near Montgomery County
A metal building home uses a steel frame and steel skin, with the clear span to open up a shop, a garage bay or a great room without interior posts. The structural design is set for your site by the engineer and the building official.
Building on Land Near Montgomery County
Treat the soils test as the first purchase condition on any upcounty parcel without sewer. Water table testing runs only in a declared wet season, and a dry year can close that season entirely, which can push a purchase back by a year. In the Agricultural Reserve, check that the parcel carries a buildable lot rather than acreage whose development rights have been transferred or terminated; the lot can be small, but the density is fixed at one house per 25 acres. Rural and Rural Cluster land allows more, at one house per 5 acres. Pole barn homes and metal building homes both suit these lots, provided the shop bay is sited around the septic area and the well setbacks. Once the soils pass, DPS handles the septic and well permits, and the building permit follows.
Other places in this part of Maryland
Montgomery & Prince George's
- Germantown
- Silver Spring
- Aspen Hill
- Montgomery County
- Prince George's County
Have land in or near Montgomery County? Tell us about the parcel and what you want on it, and we will check it against the local rules before anything is drawn.
Building in Montgomery County: questions
Start the surveyHow much does it cost to build a barndominium in Montgomery County?
Do I need a building permit for a barndominium in Montgomery County?
Can I build a barndominium in the Agricultural Reserve?
Are there barndominiums for sale in Montgomery County?
Keep reading
What usually comes next once you know what Montgomery County allows.
How Much Does It Cost to Build a Barndominium in Maryland?
Sourced per-square-foot ranges, shell versus turnkey, and the site costs that move the number.
Read itCan You Build a Barndominium in Maryland?
Zoning, farmland, septic, wells and who inspects, before you buy the land.
Read itHow Long Does It Take?
From parcel to move-in, and which steps set the clock.
Read itSources for this page
The published pages behind the Montgomery County facts above. Rules change, so check the current version with the office before you rely on it.
- Residential New Homes, Single Family and Townhouses Permit Process, Department of Permitting ServicesBuilding permit authoritymontgomerycountymd.gov
- Agricultural Reserve Planning, Montgomery PlanningLand use and zoningmontgomeryplanning.org
- Soils Testing Permit Process, Department of Permitting ServicesSewer or septic; The wet season for soils testingmontgomerycountymd.gov
- Well Permit Process, Department of Permitting ServicesPrivate water wellsmontgomerycountymd.gov
- The Ag Reserve, Montgomery County Office of AgricultureThe Agricultural Reservemontgomerycountymd.gov
Other places near Montgomery County
Nearby places with their own pages. Across a town line or a county line the permit office, the zoning, the septic and the well rules can change, so each is covered separately.
Building in Montgomery County?
Start with the survey. Tell us where the land is and what you want on it, and we will come back with which offices decide it, what the zoning allows, and a plan to fit.