St. Louis Home Additions
When your home starts to feel a little tight—more kids, more work-from-home time, more hobbies—moving isn’t always the answer. A well-planned addition gives you the space you need while keeping the neighborhood, the yard, and the routine you already love.
At Morganco, we design and build home additions that look like they’ve always belonged. From concept to construction, our team handles the details so you can focus on the fun part: imagining how your new space will actually make life easier.
We build additions that feel seamless—both from the street and from inside your home. Common projects include:
Room Additions (family rooms, primary suites, offices, etc.)
3-Season Rooms
Attached Garages & Garage Additions
Pool Houses
Second-Story Additions
Accessory Dwelling Unit
We do NOT offer standalone exterior-only services (like roofing-only, siding-only, fencing, exterior painting, or concrete work). Exterior work is completed only when it’s part of a full addition project.
“If anyone in STL is looking for projects as small as custom built-ins to as large as adding an addition, please look into these guys. You will not be disappointed! Reasonable price per square feet, extremely talented and reliable and the whole crew is incredibly nice!”
From Start to Finish…
Step One- Estimate: After you schedule your free estimate, Luke Morgan (President & Chief Builder) will meet with you to learn what you’re trying to accomplish and what’s realistic for your home. He’ll also look for any existing issues that could impact planning.
You can expect a follow-up within 2–3 business days with your estimate and proposal.
Step Two- Design: Once the proposal is approved, our design process begins. This is a collaborative partnership between you, our design team, and (when needed) an architect. We may create construction drawings and 3D renderings so you can clearly visualize the layout before building starts.
During design, you’ll also finalize the major selections that shape the look and feel of the space.
Step Three- Build: Now it’s time to build. We start by protecting your home and keeping the jobsite clean and organized. We coordinate permits and inspections, then our skilled craftsmen construct your addition according to code and our quality standards.
You’ll receive regular progress updates so you always know what’s happening next.
Step Four- Completion: When construction is complete, we remove debris, perform a deep clean, and walk the finished space with you to confirm everything meets expectations. We’ll also leave you with a record of key selections (finishes, colors, and materials) so you can reference them later.
Ready to get started?
Frequently Asked Questions
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We design and build a wide range of additions, including room expansions, garages, 3-season rooms, pool houses, and full second-story additions—customized to fit your home and your goals.
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Yes. During design, we select materials and architectural details so the addition blends naturally with your home’s existing style.
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Timelines vary based on the size and complexity of the project. During your estimate, we’ll provide a clear schedule and keep you updated throughout the build.
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Yes—most additions require permits. We handle the permitting process, inspections, and paperwork to keep your project compliant and moving forward.
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We complete exterior scopes like these only when they’re part of a full home addition. We don’t take on standalone exterior-only projects.
Looking for remodeling tips and inspiration?
Read our guides below:
