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

Shouses in New Mexico: Shop and Home Under One Roof

A shouse puts a working shop and a finished home under one roof — room for the truck, the trailer, the tractor or the business, and the house through a door. What catches people out is that the two halves are treated differently. The home is conditioned space; the shop may be cooled, heated, both or neither, and in New Mexico that choice matters in summer as much as in winter. Where the big doors face decides how much wind and dust come in with the truck. Whether you may build it at all, how big, and how close to the line is a zoning question for whoever has authority over the parcel.

Drafted for a New Mexico-licensed engineer's seal
Drawn to the snow, wind and frost values for your site
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Shouses: how the work runs

Four stages, in this order. The sequence matters more than it looks: getting the design values, the water and wastewater answers and any permits settled before anything is fabricated is what keeps a New Mexico build from stalling.

1

Split the building

The shop-to-living ratio and where the wall between them lands is the first decision, and it sets almost everything downstream: the frame, the slab on each side, the eave height and the mechanical plan. The shop bay usually wants clearance the living wing does not, and once that eave height is set, the column sizes and footings under them follow. Getting this on paper in the first meeting is cheaper than getting it right in the third revision.

2

Zoning and doors before geometry

Before anything is drawn we find out whether the parcel is zoned and by whom — a city, a county, or neither — and what the district says about accessory size, height and setbacks. Then we look at the wind. The National Weather Service notes that monsoon storms often start with gusty winds and blowing dust, and a 14-foot door facing the prevailing wind takes the full gust and fills the shop with grit. Door placement is a site decision, not a drawing decision.

3

One pour, two slabs

The shop side usually wants a thicker slab, a floor drain and a harder finish; the living side wants insulation at the edge and a smoother finish. They are commonly poured together with the transition detailed. Under both, the ground has to be ready: the New Mexico Bureau of Geology warns that collapsible soils compact when wetted, and a shop wash bay is exactly the kind of steady water source that can start it.

4

Finish both sides

The living side gets residential finish; the shop side gets the outlets, lighting, air lines, drains and door heights you asked for, with electrical and plumbing by licensed trade contractors. The wall between them is detailed as a fire separation, an air barrier and — if the shop is not conditioned — the edge of the conditioned envelope. A cooled or heated shop is insulated and air-sealed like the house.

A red oxide primed structural steel frame partly erected in open high desert, with bolted knee joints and purlins going on.
The wash bay problem

A shop that gets washed down every week is watering the ground under the house

The New Mexico Bureau of Geology describes collapsible soils as common in New Mexico, soils that "compact and collapse after they get wet", and traces damage at one Española-area site to a septic tank, a leaking water line and runoff from roads and roofs. A shouse adds a new source: shop floor drains, wash bays and hose-downs, often a few feet from the living wing's footings. So shop water is piped well away from the building, never allowed to soak in beside it, and the soil is tested before the slab is designed.

Shouses across New Mexico

In New Mexico two things change as you cross the state: who has authority over the parcel, and how high it sits. A city, a county and tribal or federal land each answer the permit and zoning questions differently, and the elevation decides how much snow the roof carries and how deep the footings go. Lower desert parcels trade snow for sun, wind and summer storms; mountain parcels add snow load and, in forested country, wildfire. Water and wastewater are settled for every parcel before anything is drawn.

Barndominium builders across New Mexico.

Every city and county we serve has its own answer on permits, water, wastewater and design values. The service area pages set out what each one publishes.

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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.

  • Shop size and eave height

    The shop half is usually the bigger half, and its eave height sets the frame for the whole building. Going from a 12-foot to a 16-foot eave for an RV or equipment door adds steel or column size, bigger footings and more wall to insulate if the shop is conditioned.

  • Conditioned or not

    An unconditioned shop needs no more than a weather-tight envelope and a properly insulated wall where it meets the home. A cooled or heated shop is insulated and air-sealed like the house, and has to be cooled through a New Mexico summer as well as heated through the winter. That one decision is among the largest swings in a shouse budget and in its running cost.

  • Two slabs, drains and the ground

    Thicker shop concrete, a trench or floor drain, and in-floor heat all add cost, and all are far cheaper before the pour than after. Where the soil report flags collapsible or expansive soil, the slab design and the drain routing change with it, and shop drains are kept away from the wastewater system.

  • Big doors

    Overhead doors are priced by size, insulation and operator, and a large one is also the biggest hole in the envelope and the biggest wind load on the frame. Their framing is designed for your site's wind value — the City of Rio Rancho uses 115 mph ultimate — and their position is set early because it drives the column layout.

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

Shouses in New Mexico: common questions

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

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What is a shouse?
A shop and a house in one building — living quarters and a working shop under one roof, usually with a shared wall and an interior door. In New Mexico it is often a place for vehicles, a trailer or RV, equipment, a trade business or a serious hobby shop, with the home alongside.
Can I build a shouse on rural land in New Mexico?
Often, yes, but the answer comes from the zoning — or the lack of it — over your parcel, not from a statewide rule. Some districts treat a shouse as one house; some limit accessory building size or height; some rural land is not zoned at all. On tribal trust land the tribal government decides. We read the rules for your parcel before a size is fixed.
Does the shop need to be insulated?
Only if it is heated or cooled, or if you want it usable in July and January. An unconditioned shop can be a plain weather-tight envelope, as long as the wall between it and the home is insulated and air-sealed as the edge of the conditioned space. A light roof colour and some ventilation make an unconditioned shop far more bearable in summer.
How big can the shop be?
Where there is zoning, the district text decides. Where there is none, the practical limits are budget, the site, and keeping the wastewater system and the drive clear of the building. We read the district text for your parcel before a size is fixed.
Do the shop and the house need a fire separation?
A shop attached to a home is treated much like an attached garage, with a rated separation between them, a solid or rated door, and sealed penetrations. Your permitting office will check it, and the drawings show it regardless, because a shop is where the fuel, solvents and hot work are.
Can I run a business from the shop?
Often, but that is a zoning question. Some districts allow a home business in an accessory building with conditions, and some do not. Tell us what you plan to do in the shop and we will check it against the district before you commit to the design.
How do I keep dust out of the shop?
Start with where the doors face. Monsoon storms, the National Weather Service notes, often arrive first as gusty wind and blowing dust. Doors on the lee side of the building, a covered apron, good door seals, and a hard or sealed floor finish do more than any filter.
Which floor plans work for a shouse?
Our barndominium-with-shop and 40x60 plans are good starting points, because the footprint splits naturally into living and working halves. Most shouses end up custom, because the shop is built around specific equipment.

Keep reading

The pages that answer the next question this one raises.

Barndominium With Shop

The plan-side version of the same idea: living space and a working bay under one roof.

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Are Barndominiums Worth It?

The shop-plus-living economics is the strongest case for this building type.

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40x60 Barndominium

The footprint that most comfortably splits into living and working halves.

Read it

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

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Tell us about the land

Tell us where the parcel is and what you want on it, and we will come back with who has jurisdiction, what the land needs before it can be built on, and what the plans and the kit have to cover. Starting the survey costs nothing.

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