May 17, 2026 7 min read
Home Addition Cost in Colorado: 2026 Price Guide
A home addition on the Front Range costs $180 to $400 per square foot in 2026, which puts a 400-square-foot bedroom addition at $72,000 to $160,000 and a full second story at $250,000 to $500,000 depending on finish level. Soil conditions, altitude-rated mechanical equipment, and permit review across Denver, Aurora, Lakewood, and Colorado Springs are what push Colorado numbers above the national