This garage ADU in Denver was built on a narrow urban lot with significant site constraints, requiring careful planning and execution throughout construction. Prenvalley Builders delivered a two-car garage with a studio, one-bedroom apartment, rooftop deck, and solar array—maximizing livability and long-term value despite challenging logistics.

This compact Denver ADU was constructed by Prenvalley Builders as an efficient, small-footprint backyard residence. Built on a helical pier foundation to reduce site impact and control costs, the project required thoughtful sequencing, precision framing, and careful coordination to maximize usable space. The result is a durable, well-built accessory dwelling unit designed to perform efficiently within a tight urban lot.