Custom-Built Sunrooms

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 a Custom-Built Sunroom

Enhance your living space and enjoy the outdoors year-round with a custom-built sunroom from Gateway Exteriors. Our expertly crafted sunrooms are designed to seamlessly integrate with your home, providing a versatile space for relaxation, entertainment, and more. We offer a wide range of sunroom styles and options to suit your unique needs and preferences:

  • Three-season sunrooms
  • Four-season sunrooms
  • Conservatories
  • Solarium-style sunrooms
  • Screened-in porches
  • Gable sunrooms
  • Cathedral sunrooms


Ready to bring the beauty of the outdoors inside?
Reach out to us to start planning your custom-built sunroom today.


Elevate Your Home's Value and Comfort

A custom-built sunroom is more than just an addition to your home; it's an investment in your lifestyle and property value. Here are some compelling reasons to consider adding a sunroom:

  • Increased living space without full-scale renovation
  • Year-round enjoyment of natural light and outdoor views
  • Versatile space for various activities and purposes
  • Enhanced energy efficiency with proper insulation
  • Potential increase in home resale value
  • Create a unique focal point for your home's exterior


With Gateway Exteriors, you'll benefit from our decades of experience in designing and constructing custom sunrooms that perfectly complement your home's architecture and meet your specific needs.


Why Choose Gateway Exteriors

When it comes to custom-built sunrooms, Gateway Exteriors stands out as the premier choice in St. Charles County, MO and the surrounding areas. Our commitment to quality and customer satisfaction is evident in every project we undertake:

  • Lifetime warranty on craftsmanship
  • Comprehensive product warranties available
  • Quality-focused approach, never compromising on materials or workmanship
  • All work performed by our own skilled employees, no subcontractors
  • Meticulous attention to detail in every aspect of the project
  • Unmatched quality in the local area
  • Over 40 years of industry experience since 1982
  • Long-tenured, highly skilled team members
  • A+ rating with the Better Business Bureau
  • Family-owned and locally operated business


Our dedication to excellence ensures that your custom-built sunroom will exceed your expectations and provide lasting value for years to come.


Contact Us

Ready to bring your dream sunroom to life? Gateway Exteriors is here to guide you through every step of the process, from initial design to final installation. Our team of experienced professionals will work closely with you to create a custom-built sunroom that perfectly suits your home and lifestyle.


Contact us today to schedule a consultation and discover how we can transform your home with a beautiful, custom-built sunroom.

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Within 48 Hours

Don't wait weeks for a quote. We'll assess your exterior needs quickly and provide a detailed estimate in just two days.

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