Shop Houses in Texas

Shop houses are the original idea behind the barndominium: a big working building with living quarters inside it or attached. For ranchers, contractors, mechanics, hobby welders, RV owners and anyone with equipment, the shop often matters as much as the kitchen. A shop house puts both on one foundation and under one roof.

Size the shop for what it holds

Start with the biggest thing that will go inside: a gooseneck trailer, a tractor with a loader, a 40-foot motorhome or a bass boat. That sets the overhead door height and width, eave height and depth of the bay. Add room to walk around it, a bench wall and storage. Then decide whether you want a lift, a mezzanine or a wash bay with a floor drain.

Keep the shop out of the house

Noise, fumes, dust and heat should stay on the shop side. An insulated separation wall, a mudroom with a sink and laundry between the two, separate HVAC or ventilation, and a solid door all help. If the shop will store vehicles or fuel, fire separation at the shared wall belongs in the design.

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Power, water and slab

Welders, compressors and lifts need dedicated circuits. HomeGuide puts interior electrical wiring at about $6,000 to $22,500 for a home; shops add to that depending on equipment. Shop slabs are usually thicker where heavy equipment parks. On expansive Blackland clay, the shop slab needs the same attention to soil movement as the living side.

Regional notes

In the Panhandle, orient big doors away from winter north winds and drifting snow. Along the coast, large overhead doors are a weak point in high wind and need to be rated for the windstorm design. In East Texas and the Coastal Bend, a conditioned or dehumidified shop protects tools from humidity.

Living quarters options

Some owners want a full family home beside the shop. Others want a compact apartment with one bedroom, a kitchenette and a bath, used while building a main house later or as a guest suite. Both work on the same slab. Plumbing, septic sizing and electrical service should be planned for the final use, not just the first phase.

Septic and wash bays

A wash bay or shop sink sends water somewhere. Wash water with oil, grease or chemicals does not belong in a home septic system, so we plan the drain route with the septic designer and your county's rules in mind.

Driveways, culverts and big rigs

A shop house means trucks, trailers and equipment going in and out, so the access drive gets the same planning as the building. Counties handle this in different ways. Grayson County, for example, requires a Development Certificate for a new culvert installation and for a new E911 address, a Right-of-Way Permit for work in the county right-of-way such as road bores for utilities, and review of all recorded documents when a lot uses an access easement instead of frontage on a county-maintained road. We size the drive, the culvert and the turnaround for the longest rig you will pull in, and line up the county approvals before the slab is poured.

Freeze protection on the shop side

Shop plumbing is usually the most exposed in the building: a utility sink, a wash bay drain or a hose bib on a wall that is not always heated. The National Weather Service notes that temperature drops of 50 to 60 degrees within 12 hours are not uncommon in Amarillo, and San Angelo spent 152 hours at or below freezing during Winter Storm Uri in 2021. We keep supply lines out of uninsulated shop walls where possible, insulate the runs that remain, and give the shop side enough heat or insulation to protect them.