Call Us Directly: [843-212-6394] | Fully Licensed SC Homebuilder
Custom Home Additions in Mount Pleasant & Charleston, SC
Don’t move—expand. Add square footage, luxury, and lasting value to your home with a seamlessly integrated structural addition.
Grow Your Space Without Leaving the Neighborhood You Love
If your family is growing, you’re working from home, or you simply need more room to breathe, you don't have to face the hassle, stress, and sky-high costs of moving. You love your neighborhood, your schools, and your commute—so why leave?
As a fully licensed South Carolina Residential Builder, Maris Exterior & Design Co. specializes in designing and building home additions. Backed by over 30 years of building experience in the Carolinas we combine elite structural engineering with high-end architectural design to make your dream home a reality right where you are.
Visualize Your Extension with 3D Digital Design Previews
A structural addition is a major investment, and you shouldn’t have to guess how it will change your home's footprint, layout, or curb appeal. We eliminate the guesswork using advanced 3D digital design previews.
Before a shovel hits the dirt, we build an accurate 3D rendering of the proposed addition attached to your existing house. You’ll be able to see the new interior layout, visualize how the rooflines blend, and see exactly how the new structure complements your current home, ensuring total confidence before construction begins.
Specialty Additions Tailored to Your Lifestyle
Because every family’s needs are different, we customize every build to match your home's architecture and your specific goals:
Primary Suite Extensions: Create a private luxury sanctuary complete with a spacious bedroom, walk-in closets, and a spa-like master bathroom.
Family Rooms & Sunrooms: Build bright, open-concept spaces designed for gathering, entertaining, and maximizing your backyard views.
In-Law Suites: Design private, fully functional, and accessible living spaces that offer comfort and autonomy for multi-generational living.
Home Offices & Flex Spaces: Craft quiet, productive workspaces, home gyms, or media rooms tailored to the modern lifestyle.
Seamless Integration: Inside and Out
The biggest flaw in many home additions is that they look like additions. Our goal is absolute continuity, making the new space look like it was part of the original blueprint.
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Structural Integrity: We design and build to strict coastal wind-zone codes, ensuring your foundation, framing, and structural engineering are built to withstand Lowcountry elements.
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Flawless Exterior Matching: Utilizing our background in exterior transformations, we match your existing roofing, trim, and siding—including James Hardie fiber cement installation.
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Interior Continuity: We match flooring, drywall textures, paint finishes, and trim details while ensuring your HVAC, plumbing, and electrical systems flow effortlessly into the new space.
The Maris Build Process: Stress-Free From Start to Finish
Whether you are updating a home in Dunes West, Park West, or Old Mount Pleasant, taking on a structural home addition requires precision, legal compliance, and local expertise. As licensed residential builders, we take the entire burden off your shoulders:
Design & 3D Render Planning: We map out your spatial goals, budget, and design preferences, bringing them to life in a digital model.
Permitting & HOA Navigation: We handle the local municipal building permits and compile the documentation required for HOA approval.
Site Prep & Structural Building: Our specialized trade crews manage the foundation, framing, and roofing safely, cleanly, and efficiently.
Interior & Exterior Finishing: We apply the final materials and finishes, leaving you with a pristine, ready-to-enjoy space. Marc Mangum (Owner/President) personally oversees the process to ensure flawless craftsmanship.