Custom homes, ADUs, remodels and outbuildings — built the way the finest work always has been: stone, millwork, lighting, hardware and proportion planned as one composition, not assembled piece by piece.
Full-service, ground-up to finish-out. If it's construction, it's on the table.
Ground-up builds designed and detailed around how you actually live — not a spec-home floor plan.
Accessory dwelling units built to the same standard as the main house — rental income or space for family.
Kitchens, whole-home remodels and additions, planned around your budget from the first estimate.
Decks, patios and outdoor spaces built to hold up and built to be used.
Full timber-frame barns and shops, built for storage, entertaining, or both.
"We can do anything. Nothing's gonna kick our ass." If we don't know how, we'll find who does.
Greg Hillis started in construction in 1990 and spent the next three and a half decades inside every trade a custom home touches — framing, tile, paint, concrete, roofing. Most builders learn, somewhere along the way, to manage a job. Greg learned to see stone, millwork, lighting, hardware and proportion as a single composition, planned together the way the finest work always is.
Ten years leading projects for one of Utah's most established custom builders sharpened that eye further — and set the standard Mantis Customs holds on every project, regardless of scope or budget.
Every trade on a Mantis job works from that same standard — because Greg has done the work himself, and knows exactly what it takes to get it right.
Every project is held to the same standard, regardless of scope.
Stone, millwork, lighting, hardware and proportion are planned as one composition — not chosen piece by piece.
Every lot has an opinion — on views, access, grading, drainage, snow and privacy. The design starts by reading the site, not overriding it.
A real number, set before the first day of construction, leaves room to invest with intention instead of reacting under pressure later.
Greg is on every job himself. Personal oversight isn't a service tier at Mantis Customs — it's the only way the work gets done.
A curved wall isn't a detail most builders would take on. Here's one, start to finish.
Every stud on the curve bent and set individually — no shortcuts, no pre-fab kit for this shape.
Second story framed out and sheathed, the curve holding true from top to bottom.
We didn't.
A look at custom homes, remodels and outbuildings we've built. The full gallery has a lot more.
Based in Utah, building custom homes, ADUs and remodels across the area. Not sure if you're in range? Give us a call.
Every project begins with a private conversation — vision, site and investment range, before the first major decision is made.
