Custom home cost estimator
Honest pricing,
at a glance.
A live calculator built from our 2026 Southern Utah pricing model across Washington, Iron, and Kane counties. Adjust square footage, location, finish level, and project complexity to see an honest cost range for your Southern Utah custom build, then request a fully line-itemed estimate by email.
Curious how that stacks up? See how we compare to other builders.
Build inputs
Tune your estimate.
Finish level
Project complexity
Your estimate, St. George, UT
4,000 sq ft, Premium finish, moderate
Low
$1.5M
$1,490,400
Most likely
$1.6M
$1,620,000
High
$1.8M
$1,814,400
Effective cost $405 per sq ft. The range above reflects normal variance for sitework, allowances, and design choices. Permit fees, impact fees, landscaping, pools, and lot purchase are not included.
Breakdown
| Base rate | $385/sq ft, Premium |
| Square footage | 4,000 sq ft |
| Base cost | $1,540,000 |
| Location, St. George | 1.00x, Washington County |
| Complexity, Moderate | + $80,000 |
| Most likely total | $1,620,000 |
How we calculated this
The numbers behind this calculator come from current Southern Utah market data and our own line-item pricing model for St. George, Ivins, Hurricane, Washington, Cedar City, and Kanab. We start with a finish-level cost-per-square-foot baseline (Premium = $385 per sq ft, St. George), apply a county-level adjustment, and add a complexity premium for steep lots, retaining walls, and unusual architecture.
What's included
The estimate covers turnkey construction, foundation through final keys, including framing, mechanical, electrical, plumbing, insulation, drywall, Designer-grade everything, full-slab natural stone, custom steel doors, smart-home wiring, integrated audio., interior trim, roofing, exterior cladding, basic site grading, and a covered patio. Project management, weekly walkthroughs, and our 2-year workmanship warranty are baked into the price.
What's not included
Lot purchase, impact fees, building permits, geotechnical reports, civil engineering for difficult sites, landscaping past the basic envelope, pool and spa, custom outdoor kitchens, casita additions, and furniture are quoted separately. We will line-item every one of these in your formal proposal so there are no surprises.
Why our cost-per-foot is honest
No teaser pricing.
No surprise change orders.
Across Southern Utah, the most common reason custom home budgets blow up is "$300 per square foot" advertising that ignores allowances, sitework, and finish reality. We do not play that game. The number you see here is in the same currency as your final contract.
For a 4,000 to 6,000 sq ft Casteca home in St. George, Ivins, or Washington in 2026, plan on roughly $300 to $580 per sq ft for the build, depending on finish level and architectural complexity. Land, landscaping, and pools are quoted separately. Cedar City and Iron County typically run about 15 percent lower because of labor and lots, and Kanab runs modestly lower with a small logistics offset.
Once we sign a pre-construction agreement, we provide a fully line-itemed budget you can take to your lender. Through construction, you watch every line item in your project portal, live, against the contract.
Ready to get specific?
Let's price your
actual build.
Calculators are a starting point. A 30-minute call is where we turn your number into a real budget for your real lot.