Barndominiums and Shop-Houses in Greene & Christian County
Four things decide whether a barndominium works on your property: the 1,000 sq ft living cap, the code requirements once living quarters go in, septic, and financing. Read them before you draw a floor plan.
1. Living quarters are capped at 1,000 square feet
In both Greene County and Christian County, living quarters inside an accessory building are capped at 1,000 square feet. That is the whole living footprint — not the whole building. A 40×60 shop with a 1,000 sq ft apartment in one end is a normal, allowed plan. A 2,400 sq ft house wearing a metal skin is a different conversation.
In Christian County, exceeding the cap requires a conditional use permit from the Board of Adjustment. That is a hearing and a timeline, not a form. Also note the county's agricultural exemption does not help here: it explicitly excludes dwellings.
2. What changes once living quarters go in a pole barn
Greene County requirements for the living side:
- Footings a minimum 18 inches below finish grade. Deeper than a plain shop pad.
- Minimum 1/2-inch gypsum board separating the living area from the barn side.
- Egress door minimum 36 inches wide by 6 ft 8 in high.
- Sleeping-room egress window minimum 5.7 sq ft (821 sq in). This one catches people who planned a bedroom with a small high window.
Springfield's design criteria still apply where they govern: 20 PSF ground snow, 115 MPH ultimate design wind, Seismic Category B, 24-inch frost depth, 9°F winter design temperature, moderate-to-heavy termite risk.
3. Septic
Missouri DHSS requires a construction permit to install or repair an onsite wastewater system on residential property under three acres. Many people read that and assume small acreage is the trigger — but Greene County's own ordinance overrides the state exemption, so in Greene County a permit is required regardless of acreage.
Greene County also requires a soils report by a qualified soil scientist plus a system design. That report can change your building location, so order it before the site plan is final, not after. Greene County Environmental Division: (417) 868-4147.
4. Financing, honestly
We do not arrange financing and we will not tell you it is easy. Per Fairway Independent Mortgage, traditional lenders can be hard to find for these builds, and the core obstacle is appraisal comparables — “if the appraiser has nothing to compare your home to, they won't be able to assign a value.”
USDA loans are the most viable rural path, and much of the Greene and Christian County fringe is USDA-eligible. Talk to a lender who has closed one of these before you finalize a plan, because what they will appraise shapes what is worth building.
5. What they cost
- Pole barn with living quarters — $30,000–$120,000 (HomeGuide)
- Complete pole barn house, 2,400 sq ft finished — $120,000–$300,000 (HomeGuide)
- Barndominium, 2,000 sq ft finished steel-frame — $150,000–$315,000 (HomeGuide)
- Finishing over the shell — $35–$110 per square foot (HomeGuide)
- Total project — $150–$400 per square foot (FBi Buildings), with a rule of thumb that the total lands at 2–3× the shell
Against conventional construction: HomeGuide puts a traditional home at $180–$280 per square foot and finished metal at $50–$145 per square foot. The savings are real, but they live in the shell. Kitchens, baths, HVAC and septic cost the same either way.
Ranges are market data, not our quote. What yours costs depends on site, height, doors and finish.
Full cost guide → · Permit rules by jurisdiction → · Pole barns →
Barndominium questions
- How big can the living quarters be?
- Living quarters in an accessory building are capped at 1,000 square feet in both Greene and Christian County. In Christian County, going over that cap requires a conditional use permit from the Board of Adjustment. Most buyers do not learn this until they have already drawn a floor plan.
- Do I need a septic permit if I am under three acres?
- In Greene County, yes. Missouri DHSS exempts residential lots under three acres from the state construction permit, but Greene County's own ordinance overrides that exemption, so a permit is required regardless of acreage. The county also requires a soils report by a qualified soil scientist plus a system design.
- Can I get a normal mortgage on a barndominium?
- It is harder. Per Fairway Independent Mortgage, traditional lenders can be difficult to find, and the core obstacle is appraisal comparables: if the appraiser has nothing to compare your home to, they cannot assign a value. USDA loans are the most viable rural path, and much of the Greene and Christian County fringe is USDA-eligible.
Still working out whether it pencils?
Bring the questions you have not answered yet — acreage, septic, the living-space cap. We will tell you what is possible on your property before anyone talks about a build date.
Mon–Fri 7am–6pm, Sat 8am–2pm · Serving Greene and Christian County.
Tell us what you're putting in it
Four questions. We call you back and talk through size, height and what it takes on your site.