ADU builder in St. George, Utah
Arena Homes designs and builds permitted accessory dwelling units for St. George homeowners — detached backyard ADUs, basement conversions, and garage conversions — with fixed design-build pricing and one accountable team. We handle St. George zoning and permitting end to end.
What we build in St. George
A brand-new, permitted accessory dwelling unit in your backyard — designed, engineered, and built to add rentable square footage and long-term value to your lot.
Learn more →Convert unused basement square footage into a fully separate, code-compliant apartment with its own entrance, kitchen, and meter-ready systems.
Learn more →Reclaim an underused garage as a bright, efficient studio or one-bedroom ADU — often the lowest-cost-per-square-foot way to add a unit.
Learn more →Thinking about adding rental income or multigenerational space in St. George? Most single-family lots qualify for at least an internal or attached ADU, and many qualify for a detached unit. Share your address and we’ll tell you exactly what your St. George lot allows.
ADU questions from St. George homeowners
How much does an ADU cost in Utah?+
Most ADUs in Utah cost between $150,000 and $350,000 to build in 2026. A garage or basement conversion typically runs $120,000–$200,000, while a detached new-build ADU of 600–1,000 sq ft generally runs $200,000–$350,000 depending on finishes, site work, and utility connections. Arena Homes gives a fixed design-build price up front so there are no surprises.
Are ADUs legal in Utah?+
Yes. Utah passed statewide legislation requiring most cities to permit internal accessory dwelling units, and many cities also allow detached ADUs. Rules on size, parking, and owner-occupancy vary by city — Arena Homes handles the zoning check and permitting for your specific lot.
How long does it take to build an ADU?+
From signed design to final inspection, a typical Utah ADU takes 5–9 months: roughly 4–8 weeks for design and permitting, then 4–6 months of construction. Conversions are usually faster than detached new builds.
Will an ADU add value to my home?+
Generally yes. A well-built ADU adds both rentable income and resale value — many Utah homeowners see $1,200–$2,000/month in rent and a meaningful bump in appraised value. The exact return depends on your neighborhood and the unit size.
Can I finance an ADU?+
Yes — common options include a home equity line of credit (HELOC), cash-out refinance, renovation loans, and construction loans. Some homeowners use projected rental income to help qualify. Arena Homes can point you to Utah lenders who specialize in ADU financing.
Does my lot qualify for an ADU?+
Most single-family lots in Utah qualify for at least an internal or attached ADU; detached ADUs depend on lot size, setbacks, and your city's zoning. Share your address and Arena Homes will tell you what your specific lot allows.
Find out what your St. George lot can do
Get a fixed, lot-specific ADU estimate — and see what your backyard could earn.