Home Additions

Rosewood Building Group designs and builds custom home additions in St. Louis, St. Charles, and surrounding areas. From kitchen extensions and mudrooms to in-law suites, pool houses, and more, our team delivers stylish, seamless expansions that feel like they’ve always belonged. As a trusted room addition contractor in St. Charles, MO, we’re known not just for our craftsmanship but for how we communicate openly and honestly with our clients. Whether you need more space for entertaining, storage, or family life, Rosewood will help you reimagine what home can be. 

Contact us today to get a preliminary estimate on your unique project.

Room Additions

Custom Home Additions

by Rosewood Building Group

Expanding your home is about more than increasing square footage. It’s about creating extra space for life’s moments. Maybe your kitchen feels cramped during holidays, or your family has grown and your home needs to expand too. Whatever the reason, a well-designed addition can add both comfort and long-term value.

At Rosewood Building Group, we specialize in custom room additions tailored to your specific needs. We’ve built everything from mudroom extensions that add structure and order to expansive family rooms, detached garages, and in-law suites. Every project starts with a conversation. We listen closely, design with purpose, and guide you through each step,  from architectural drawings — handled in-house or with one of our trusted partners — to final installation and styling for interior projects and landscaping for exterior projects. To optimize timelines, we pre-order materials while we manage HOA and city approvals.

From the first concept to finishing touches, we manage each step with the precision and care our clients have come to count on. Regardless of size, our process stays the same: thoughtful planning, honest communication, and craftsmanship you can trust.

Interested in adding an addition to your home? Send us a message to get an estimate for your project.

★★★★★

Professional Home Addition Services

We believe a smooth addition starts with preparation and clear communication. That’s why we plan carefully up front, so there are fewer surprises along the way. If something unexpected happens, like discovering hidden damage behind a wall, we’ll talk it through with you and offer practical solutions that fit your goals and budget. Our team handles the little things without adding stress, and we prioritize keeping your final invoice aligned with your original quote. No surprises. No hidden fees. Just thoughtful work, honest guidance, and a finished space that feels like it was always there.

If you’re looking for the best company for home additions in the St. Louis metro area, we’d love to hear more about your project. Reach out to us today to discover what we can do for you.