Sunroom & Patio Construction

St. Charles County, MO Area

Lifetime Craftsmanship Warranty

A+ Rating With the BBB

Free Estimates Within 48 Hours

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Transform Your Home with Stunning Sunrooms and Patios

Gateway Exteriors has been enhancing homes in St. Charles County, MO and the surrounding areas since 1982. With over four decades of experience, we specialize in creating beautiful, functional outdoor living spaces that seamlessly blend with your home's architecture. Our commitment to quality craftsmanship and attention to detail has earned us an A+ rating with the BBB and a reputation as the premier exterior improvement contractor in the region. We take pride in our long-tenured employees and our policy of never using subcontractors, ensuring consistent, high-quality results on every project.

At Gateway Exteriors, we understand that your home is your sanctuary, and we're dedicated to helping you make the most of your living space. Our family-owned business prioritizes quality over quantity, focusing on delivering exceptional results that stand the test of time. We offer a lifetime warranty on our craftsmanship and provide product warranties to give you peace of mind. Whether you're dreaming of a cozy sunroom, a spacious patio, or a custom home addition, our team has the expertise to bring your vision to life. Contact Gateway Exteriors today to start your journey towards a more beautiful, functional home.

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Why Choose Us

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Lifetime Craftsmanship Warranty

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A+ Rating With the BBB

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Free Estimates Within 48 Hours

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In Business Since 1982

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Product Warranties Honored

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No Subcontractors

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Covered Patios

Our covered patios provide the perfect blend of indoor comfort and outdoor living. We design and construct durable, stylish patio covers that protect you from the elements while allowing you to enjoy your outdoor space year-round. Our team works closely with you to select materials and designs that complement your home's architecture and meet your specific needs.
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Custom-Built Sunrooms

Experience the beauty of nature from the comfort of your home with our custom-built sunrooms. We create light-filled, energy-efficient spaces that serve as perfect retreats for relaxation or entertainment. Our sunrooms are tailored to your preferences, with options for heating and cooling to ensure year-round comfort.
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Home Additions

Expand your living space with our expertly crafted home additions. Whether you need an extra bedroom, a home office, or a larger living area, our team can seamlessly integrate new spaces into your existing home. We handle every aspect of the project, from design to construction, ensuring a smooth process and outstanding results.
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Screened-In Porches

Enjoy the outdoors without the nuisance of insects with our screened-in porches. We design and build beautiful, functional screened spaces that provide a perfect balance of fresh air and protection. Our screened-in porches are built to last, using high-quality materials and expert craftsmanship to ensure years of enjoyment.
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Recent Projects

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Here's what our satisfied clients are saying...

At Gateway Exteriors, we take pride in providing exceptional exterior improvement services to our clients. We would be grateful if you could share your thoughts about our business with others. Your feedback helps us improve and helps others make informed decisions. Please take a moment to leave a review of Gateway Exteriors and let others know what you think.