The interior of a shouse where a finished living area with warm flooring meets a shop bay with polished concrete and a tall roll-up door.

Shouses in Tennessee

A shouse puts a working shop and a finished residence under one roof. The appeal is obvious, but the execution is where it goes wrong: the shop side needs a different slab, different ceiling height, different ventilation, and a fire separation between the two. We build the separation in from the first drawing.

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How a shouses project runs

Four stages, in this order. The sequence matters more than it looks: getting engineering and permitting settled before anything is fabricated is what keeps a build from stalling.

1

Split the building

We decide the shop-to-living ratio and where the wall between them lands. This single decision sets the frame, the slab, and how the permit gets classified.

2

Separation and code

Fire separation between shop and dwelling is a code requirement, not an upgrade. We detail the rated assembly and the door hardware at design stage.

3

Two slabs, one pour

The shop side usually wants a thicker slab with a different finish than the living side. Both get poured in one operation with the transition detailed.

4

Finish both sides

The living side gets residential finish. The shop side gets the outlets, lighting, drainage, and door heights you actually asked for.

A red oxide primed structural steel frame partly erected on a concrete slab, showing bolted knee joints and anchor bolts.
Two buildings, one roof

The wall between the shop and the house is a code requirement, not a design choice

A shouse is one building doing two jobs, and the separation between them is where the code has opinions. The rated assembly, the door through it, and how the shop is ventilated are all specified rather than optional. Nothing about a working bay under the same roof is unusual to a Tennessee reviewer — but it is reviewed as a dwelling with an attached garage or workshop, and it has to be drawn that way. Getting that wall right at design stage is straightforward. Discovering it at inspection, after the shop is finished, is not.

Where we deliver shouses

Grouped by county, because in Tennessee the county or the city sets your permitting authority, whether the residential code is enforced there at all, and the design criteria filled into Table R301.2. Two places twenty miles apart can carry very different engineering, and a county can vote itself out of the residential code while a city inside it stays in.

Blount County

Blount County

Bradley County

Bradley County

Cumberland County

Cumberland County

Davidson County

Nashville

Hamilton County

Chattanooga

Jefferson County

Jefferson County

Knox County

Knoxville

Loudon County

Loudon County

Maury County

Maury County

Montgomery County

Clarksville

Putnam County

Putnam County

Robertson County

Robertson County

Rutherford County

Murfreesboro Rutherford County

Sevier County

Sevier County

Shelby County

Memphis

Sumner County

Sumner County

Washington County

Washington County

Williamson County

Williamson County

Wilson County

Wilson County
Before you commit

What actually decides the price

Square footage is the number everyone leads with, and it is rarely the one that moves a barndominium budget. These four do.

  • Living-to-shop ratio

    The split drives the number far more than total square footage does. Finished residential space and open shop space are different products at very different rates.

  • Separation and fire rating

    The assembly between shop and dwelling, and the door through it, are code-specified. It is a modest cost designed in and an expensive one retrofitted.

  • Shop ventilation and heating

    A working shop attached to a house needs its own air strategy so that what happens in the shop stays there. In a humid Tennessee summer that also decides where the condensation goes, and it is routinely forgotten until it is a problem.

  • Overhead doors

    Size and number matter structurally as well as financially. Every large opening interrupts the frame and needs reinforcement around it.

The interior of a shouse where a finished living area with warm flooring meets a shop bay with polished concrete and a tall roll-up door.

Shouses in Tennessee: common questions

7 questions we get asked most often about building in Tennessee. If yours is not on the list, ask it directly.

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What exactly is a shouse?
A shop and a house in one structure, usually with a working bay under the same roof as the living space. The name is regional slang rather than a code term, so on your permit application it is a dwelling with an attached garage or workshop, and it is reviewed as one. That framing matters, because it means the whole building is assessed against the residential code rather than against anything more relaxed.
How is the shop separated from the living space?
By a rated assembly with a rated, self-closing door through it. The residential code treats an attached garage or workshop as a distinct hazard from the dwelling and requires the separation for exactly the reason you would expect. It is not onerous, but it does have to be drawn, built and inspected rather than assumed, and a shop that was finished before anyone thought about the wall is the expensive version of this conversation.
Do I need sprinklers in a shouse?
Careful here, because the usual answer given online is only half right. Tennessee adopted the 2018 IRC with an amendment making R313, automatic fire sprinkler systems, non-mandatory, and T.C.A. § 68-120-101(a)(8) bars the state fire marshal from imposing sprinklers on one- and two-family dwellings. But the same subdivision expressly allows local governments to adopt more stringent requirements. So the state will not require them and a city might. Ask your jurisdiction rather than trusting a flat "not required", and ask early, because a sprinkler system added after the layout is fixed is a costly retrofit.
Can I put bedrooms in the loft over the shop?
Usually yes, and two sections govern it. R310 in the 2018 edition requires an emergency escape and rescue opening in every sleeping room, with minimum clear opening dimensions and a maximum sill height, which a loft window has to be sized and positioned for rather than chosen for looks. Smoke alarm requirements, including interconnection, sit at R314 in the 2018 and 2021 editions. Both are cheap to design in and awkward to correct once the framing and the glazing are ordered. Sleeping space over a shop also makes the separation detail more important, not less.
Can I run a business out of it?
That is a zoning question rather than a building code one, and in Tennessee the answer changes by county, by city and by district. A home occupation is permitted in many rural zoning districts within limits on employees, traffic, signage and outdoor storage. A business that brings customers, deliveries or employees to the site is usually a different use entirely, and it can also push parts of the building under the commercial code, which Tennessee runs on a newer edition than the residential one. Check the district before you build, because the building will be very hard to un-build if the answer is no.
Can I heat and cool the shop?
Yes, and it is worth deciding early because it changes the envelope. A conditioned shop is inside the thermal boundary and needs the insulation and air sealing to match; an unconditioned one is outside it and the separating wall becomes an exterior wall in energy terms. Retrofitting from one to the other means opening up finished construction. Which climate zone your parcel sits in decides what that wall has to achieve, so it is a decision to make with the plan in front of you rather than at framing.
Does the shop count toward the house square footage for permitting or taxes?
Generally the two are counted separately, with the finished living area assessed differently from unfinished shop space, but the specifics are set by the county property assessor rather than by the building code. It is worth a call to the assessor’s office before you finalise the split, because on a large building the difference is not trivial.

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Ready to put shouses against a real plan? Start there and the rest follows.

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