Home Additions Columbus

Outgrowing your current home? Want to expand your living space without the hassle of moving? At SemBro Designs, we specialize in home additions in Columbus that seamlessly blend with your existing structure while giving you the extra room you need. Whether you’re adding a new bedroom, expanding your kitchen, or building a complete second story, our team delivers high-quality additions that look and feel like they’ve always been there.

We’ve helped Columbus homeowners create more functional, spacious homes with beautifully designed additions tailored to their needs. With our full-service approach, you can trust us to handle everything — from permits and design to construction and finishing touches.

Why Choose SemBro Designs for Your Home Addition in Columbus?

Over 10 years of experience with complex home expansions

Full-service design-build process from start to finish

Permitting, structural planning, and code compliance handled in-house

Seamless integration with your home’s existing architecture

Custom layouts and finishes tailored to your goals and budget

We take pride in being a trusted provider of home additions Columbus families turn to for quality craftsmanship and reliable service.

Home Additions That Fit Your Lifestyle

Every home and family is different, which is why we design each addition with your specific goals in mind. Whether you need extra square footage for a growing family, want to add resale value, or simply need more room to breathe, SemBro Designs will help you create a space that works for your life.

We specialize in a variety of home additions in Columbus, including:

Bedroom Additions

Need a guest room, a nursery, or a larger primary suite? We can expand your floor plan to add a cozy, functional bedroom that enhances comfort and privacy.

Bathroom Additions

Add a powder room, hall bath, or luxurious ensuite to improve daily convenience and home value. Our bathroom additions are fully customized with tile, vanities, lighting, and plumbing upgrades.

Kitchen Expansions

Transform a cramped kitchen into an open, inviting space ideal for cooking and entertaining. We’ll increase square footage, upgrade cabinetry, and improve workflow — all within a cohesive design plan.

Room Bump-Outs

Need just a little more room in the living area, dining room, or entryway? A bump-out addition adds space without the cost or scale of a full room.

Sunrooms & Enclosed Porches

Create a relaxing space filled with natural light. Our custom sunrooms and three-season rooms are perfect for enjoying the outdoors year-round.

Second-Story Additions

Maximize your lot by building up. We can add entire levels to your home with bedrooms, bathrooms, and bonus rooms — all designed to match your home’s exterior and structure.

Garage Conversions & Detached Additions

Turn unused garage space into a guest suite, office, or playroom. We also design and build detached additions like studios, workshops, and backyard cottages.

What Sets SemBro Apart?

We’re not just general contractors — we’re full-service remodeling and design experts. That means we bring both creativity and precision to every project. Homeowners in Columbus choose SemBro Designs for their home additions because:

We design for function and beauty

Our additions aren’t just extra square footage; they’re spaces you’ll actually use and enjoy.

We do it all in-house

Design, permits, construction, finishes — all handled by our team.

We work with your budget

We offer flexible options and clear estimates to match your investment level.

We’re known for our quality

No shortcuts, no rushed jobs. Just reliable, professional work from a team you can trust.

Home Additions Columbus Homeowners Love

Whether you’re expanding for family, comfort, or investment purposes, we’re here to make sure the process is smooth and the results are exceptional.

how we work

Our Process for Home Additions Columbus Homeowners Can Rely On

01. Consultation & Needs Assessment

We start by understanding what you’re hoping to achieve with your addition. Is it more living space? Improved functionality? A future resale upgrade? We'll help you define the goals and scope of your project.

02. Design & Planning

Our designers develop a layout that flows seamlessly with your current home while adding the functionality you need. We present layout options, 3D renderings, and material suggestions to help bring your vision to life.

03. Permits & Engineering

We handle all architectural plans, structural assessments, and permit applications required by the city of Columbus and surrounding areas. We ensure your addition is fully compliant with building codes and zoning regulations.

04. Construction & Project Management

Once everything is approved, our licensed crew begins the build phase. Your dedicated project manager will keep you informed throughout construction, coordinate timelines, and ensure quality at every stage.

05. Finishing Touches

We complete your home addition with top-tier finishes, from flooring and paint to trim and lighting. The end result is a fully functional, beautiful space that feels like a natural extension of your home.

Ready to Get Started on Your Home Addition?

If you’re considering expanding your home, SemBro Designs is the team to call. We’ve helped countless families add more space, improve layout, and increase their home’s value with professionally designed home additions in Columbus. Contact us today to schedule a consultation. Let’s bring more space and more possibilities to the home you already love.

Seamless Integration, Superior Craftsmanship

What makes our home additions in Columbus stand out? Seamless blending and quality workmanship. We don’t just tack on a new room — we design additions that match your existing home’s style, exterior materials, roofline, and interior finishes. When we’re done, it won’t look like an add-on. It will look like it was always meant to be there.