Custom casita construction in the Las Vegas valley currently ranges from approximately $250 per square
foot at the entry level to $500 per square foot or more for luxury-finish builds (Picasa Homes industry
data, 2025). For a typical 1,200-square-foot detached casita built to luxury standards, total project cost
typically falls between $400,000 and $600,000+, including design, permits, site work, and finishes.
By size, the typical Las Vegas valley casita and addition pricing ranges look like this:
- 500 sq ft casita: $150,000 to $300,000
- 800 sq ft casita: $240,000 to $480,000
- 1,200 sq ft casita (Henderson maximum for a detached ADU): $360,000 to $720,000
- Room addition: $300 to $500 per sq ft of added space
- Second-story addition: $400 to $700 per sq ft of added space
Final pricing depends on lot conditions, finish level, HOA requirements, and design complexity. Every
Kingdom & Co. project starts with a complimentary in-home consultation where we develop a realistic
budget range for your specific scope and lot before any design work begins
