Barndominium Builders in Powell, TN

Barndominium builders in Powell work in unincorporated Knox County, which simplifies one thing right away: there is no city building department to sort out. Powell is a census-designated place of 13,802 people (2020) covering about 8.5 square miles just north of Knoxville. It lies in the Beaver Creek Valley between Copper Ridge and Beaver Ridge, at an elevation of about 1,060 feet, with Knoxville on the far side of Beaver Ridge to the southeast.

Knox County runs the permits

Because Powell is not incorporated, residential building permits come through Knox County Codes Enforcement. The county's code history shows it adopted the 2018 ICC codes, including the International Residential Code, by ordinance on November 19, 2018. Earlier milestones include adoption of the 2006 IRC in December 2006 and a 2010 amendment that changed insulation values. For a barndominium, the IRC governs the living space whether the frame is steel or wood, so we design to that code from the start.

The health department step

If the lot is not on sewer, the Knox County Health Department has to approve the septic system first. Its groundwater FAQ states that an SSDS permit is required before Codes Enforcement will issue a residential building permit. All new systems, repairs and alterations need a health department permit before work begins. The installation permit application includes soil maps from a soil consultant, the bedroom count, basement plans, the water source and a site sketch. On ridge-side lots around Powell, the soil maps often decide where the drain field goes and therefore where the house can go.

Ridge soils and slopes

Copper Ridge and Beaver Ridge frame the community. USDA's Fullerton series, a cherty limestone soil found on ridges in the Southern Appalachian Ridges and Valleys of eastern Tennessee, has slopes from 2 to 70 percent and chert gravel and cobbles making up 10 to 45 percent of some layers, over a clay subsoil. Ground like that can be well drained but rocky to dig, which affects footing excavation and trenching for utilities.

Knox County's Hillside and Ridgetop Protection Plan adds context. It notes that slope failures mostly occur on ground steeper than about 15 percent, and that county growth policy limits rezonings on 15 to 25 percent slopes to districts with at least one-acre lots, and on 25 percent and steeper to about one home per two or more acres. If you are buying ridge-side land in Powell, those numbers are worth knowing before you plan a subdivision or a second home on the parcel.

Brick, rail and roads

Powell's history is tied to the railroad and to brick. Mud from Beaver Creek was used to make bricks that shipped out on the East Tennessee, Virginia and Georgia Railway, and the community is named for Columbus Powell through the old Powell Station stop. Today Emory Road (State Route 131) runs through the community, Clinton Highway (U.S. 25W) forms its western edge and Interstate 75 lies to the east. That access makes Powell a common choice for people who want acreage and a shop within easy reach of Knoxville.

Weather notes for north Knox County

Powell shares the Knoxville area's humid subtropical climate: in Knoxville, the daily average is 38.2 F in January and 78.4 F in July, with just under 52 inches of precipitation and about 4.6 inches of normal snowfall. The National Weather Service office in Morristown lists Knox County in its tornado appendix and names April as the peak month. On a barndominium we answer that with a properly anchored frame, wind-rated doors on large shop openings, and condensation control under the metal roof.

Good fits for Powell lots

• A shop house with a drive-through bay on a flat valley lot
• A walkout barndo set into the side of Copper Ridge or Beaver Ridge
• A compact two-story plan where the septic field limits the footprint

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