Home Additions & ADUs in Castle Rock, CO

Castle Rock Home Addition Experts

JBHI designs and builds home additions and ADUs for homeowners across Castle Rock and the surrounding South Denver metro. From single-room expansions and pop-tops to garage conversions and multi-generational suites, one team manages design, trades, permitting, and construction from start to finish.

Castle Rock has seen significant new construction over the past decade. Many of those homes still have builder-grade layouts that no longer fit a growing household: no true primary suite, a tight kitchen, or no flexible office or guest space. Expanding on the existing lot keeps the location while adding the rooms that daily life requires. JBHI coordinates structure, envelope, and finishes so the addition ties cleanly into the original build.

Our remodeling services in Castle Rock include:

Castle Rock, CO Home Additions

Additions built for Castle Rock homes moving past builder-grade plans. From bump-outs and primary suites to second-story expansions and ADUs, JBHI delivers clear communication, coordinated permitting, and finishes that look intentional with the existing exterior.

Your local Castle Rock additions team, from first call to final detail. We work directly with you through design, structural coordination, and construction. One team, one point of contact, and a schedule that keeps your project on track.

“JB and his team were a pleasure to work with. I didn't experience any of the common pitfalls that I've heard about when working with contractors. JB finished on-time, on budget, and the team effortlessly worked with me on the few change orders we needed. Will definitely be using JB for future projects and highly recommend.”