Why Barndominiums Are Gaining Popularity in the Upstate
If you have driven through the rural corridors of Greenville or Spartanburg County recently, you have probably noticed something new dotting the landscape: barndominiums. These hybrid structures combine the efficiency of agricultural-style construction with the comfort and livability of a custom home, and they have become one of the most requested building types we see at Grander Construction. Homeowners are drawn to the open floor plans, the lower cost per square foot compared to traditional stick-built homes, and the distinctive aesthetic that sets a barndominium apart from anything else on the block.
Having built custom homes and specialty structures across the Upstate South Carolina region, we bring the same attention to detail and building science standards to every barndominium project. A barndominium is not a shortcut to home ownership. Done right, it is a fully engineered, code-compliant residence that happens to start with a different structural approach.
Site Planning and Preparation
Before a single post goes into the ground, thorough site planning determines whether your barndominium project will succeed or stall. In the Greenville-Spartanburg area, most residential land is governed by county zoning ordinances that specify minimum setbacks, maximum lot coverage percentages, and allowed building types. Not every parcel is zoned for a barndominium, so the first step is confirming that your lot permits this style of construction.
Soil testing is equally critical. South Carolina soils range from red clay in the Piedmont foothills to sandy loam closer to the Broad River basin. Clay-heavy soils expand and contract with moisture, which can shift a slab foundation over time if the pad is not properly compacted and graded. We always recommend a geotechnical survey before finalizing foundation design, because the cost of that survey is a fraction of what it would take to repair a cracked slab two years down the road.
Access roads, utility runs, and stormwater management plans also need to be mapped out early. If your property is on a private road or lacks municipal water and sewer, you will need to factor in well drilling, septic system design, and possibly a longer driveway than you anticipated. Each of these elements adds to the site work budget, and addressing them up front prevents surprises during construction.
Metal Building vs. Wood Frame: Choosing Your Structure
The fundamental decision in any barndominium project is whether to use a pre-engineered metal building shell or a traditional wood frame. Both approaches have merit, and the right choice depends on your budget, your aesthetic preferences, and how you plan to use the space.
Pre-engineered metal buildings arrive as a kit of steel columns, rafters, purlins, and metal wall and roof panels. They go up quickly, often in a matter of weeks, and they offer clear-span interiors without load-bearing walls. This gives you enormous flexibility in floor plan design. The downside is that steel conducts heat and cold extremely efficiently, which makes insulation a more complex challenge in South Carolina where summers routinely hit the mid-nineties with humidity to match.
Wood framing, on the other hand, uses the same construction methods found in conventional homes. You get a more traditional wall cavity for insulation, easier integration of interior finishes like drywall, and a familiar process for plumbing and electrical rough-in. The trade-off is higher material costs in the current lumber market and longer construction timelines compared to a metal shell.
Many of our clients choose a hybrid approach: a metal exterior shell for cost efficiency and speed, with wood-framed interior partition walls for insulation and finish flexibility. This combination captures the best of both worlds.
Insulation Challenges in South Carolina Humidity
Insulation is where barndominium projects often go wrong, and where our background in Midwestern building science makes a meaningful difference. In a metal building, condensation is the enemy. When warm, humid Upstate air meets a cool steel panel, moisture forms on the interior surface. Without proper vapor management, that moisture leads to mold, rust, and degraded insulation performance.
We address this with a layered approach. Closed-cell spray foam applied directly to the interior face of metal panels serves as both insulation and vapor barrier. For walls that need to meet higher R-value targets, we fur out with wood studs and add a second layer of batt or rigid foam insulation. The key is creating a continuous thermal envelope without gaps where condensation can accumulate.
Ventilation matters just as much as insulation. Ridge vents, soffit vents, and mechanical ventilation systems work together to move humid air out of the building envelope before it can cause problems. In a climate where the dew point regularly exceeds 70 degrees Fahrenheit from May through September, passive ventilation alone is rarely sufficient.
Interior Finishing: From Shell to Home
Once the shell is up and insulated, the interior finishing process is where your barndominium begins to feel like home. This phase includes framing interior walls, running plumbing and electrical, installing HVAC ductwork, hanging drywall, and applying finishes.
Open floor plans are a hallmark of barndominium design, but open does not mean unplanned. Kitchen placement relative to plumbing stacks, bathroom clustering for efficient drain runs, and HVAC zone planning all need to be resolved before interior framing begins. We work through these details during the design phase so that construction flows smoothly once we start building.
Flooring is another consideration unique to slab-on-grade barndominiums. Concrete slabs can be stained and polished for an industrial look, covered with luxury vinyl plank for warmth underfoot, or finished with tile or hardwood depending on your taste. Radiant in-floor heating is also an option, though it needs to be installed before the slab is poured.
Zoning and Permitting in the Upstate
Greenville County and Spartanburg County each have their own zoning and permitting requirements for barndominiums. In most cases, a barndominium used as a primary residence must meet the same building codes as any other single-family home, including the International Residential Code and local amendments. This means engineered plans, foundation inspections, framing inspections, and a final certificate of occupancy.
Some municipalities within these counties have additional overlay districts or architectural review requirements. If your property falls within city limits rather than unincorporated county land, you may face stricter design guidelines. We handle the permitting process for every project we build, because navigating these requirements is part of delivering a finished home on schedule.
How long does it take to build a barndominium?
A typical barndominium in the Upstate takes between four and eight months from groundbreaking to move-in, depending on the size and complexity of the project. Metal shell erection is the fastest phase, often completed in two to four weeks. Interior finishing, including plumbing, electrical, HVAC, drywall, and final finishes, accounts for the majority of the construction timeline. Custom features like vaulted ceilings, specialty lighting, or high-end kitchen buildouts can extend the schedule.
Are barndominiums cheaper than traditional homes?
On a per-square-foot basis, barndominiums often cost 10 to 30 percent less than a comparable stick-built home, primarily because the metal shell is less labor-intensive to erect. However, the savings depend heavily on interior finish levels. A barndominium with granite countertops, custom cabinetry, and hardwood floors will approach the cost of a conventional custom home. The biggest savings come from the structural shell and the reduced framing labor.
Can I finance a barndominium with a traditional mortgage?
Financing can be more complex than for a traditional home. Not all lenders offer construction loans for barndominiums, and appraisal comparables can be limited in areas where few barndominiums exist. We recommend working with local lenders in the Greenville-Spartanburg market who have experience with this building type. Several credit unions and regional banks in the Upstate have barndominium lending programs.
Do barndominiums hold their value?
Resale value depends on location, quality of construction, and how well the property fits the local market. A well-built barndominium on a desirable lot in the Upstate will hold its value and appreciate over time, especially as demand for this housing type continues to grow. The key factors are quality of finishes, energy efficiency, and whether the home was built to code with proper permits and inspections.