Sunroom Extensions & Expansions Builders St Augustine, FL

Pool screen enclosure attached to residential patio with aluminum framing in St. Augustine, FL.

As families grow or lifestyles evolve, many homeowners in St. Augustine find that their current sunroom just doesn’t offer enough space anymore. Whether you’d like to transform a cozy three-season room into a full four-season living area or add more square footage for guests and gatherings, a sunroom expansion is one of the best ways to boost both comfort and home value.

Every project begins with an on-site consultation where we assess your existing sunroom, take precise measurements, and discuss your goals in detail. Some homeowners in Marsh Creek and Palencia request expanded dining or lounge areas with panoramic views, while others in Vilano Beach or World Golf Village want enclosed Florida rooms they can enjoy year-round. From planning and permits with St. Johns County to construction and final inspections, our team manages everything to keep the process smooth and stress-free.

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Sunroom Extensions & Expansions

The cost of a sunroom extension in St. Augustine typically ranges from $10,000 to $35,000+, depending on the size of your addition, materials used, and whether you’re upgrading to insulated glass or aluminum framing designed for hurricane conditions. Most projects take between 4 and 8 weeks once permits are approved. By using durable, storm-rated materials, we ensure your expanded sunroom not only looks beautiful but also stands strong against coastal humidity, salty air, and those seasonal Florida storms.

For many St. Augustine homeowners, an expansion is the perfect balance between a small repair and a full rebuild. We’ve completed projects throughout Anastasia Island, Palencia, and Nocatee, where families wanted a few more feet of space for entertaining, home offices, or fitness areas. Our goal is always the same: to create a sunroom extension that feels seamless like it’s always been part of your original home.

Screened patio enclosure replacement for a residential backyard in St. Augustine, FL.
Custom-built lanai enclosure with screened walls and aluminum framing in St. Augustine, FL.

Residential Sunrooms in St. Augustine, FL

For homeowners in St. Augustine, a sunroom is more than just an extra space it’s a place to unwind, spend time with family, and enjoy Florida’s sunshine without the bugs, humidity, or harsh heat. Over the years, we’ve designed and built custom residential sunrooms across neighborhoods like Palencia, Anastasia Island, and Marsh Creek, each one crafted to fit the homeowner’s unique lifestyle.

The cost of a residential sunroom in St. Augustine generally ranges from $15,000 to $40,000, depending on the size, materials, and whether you’re adding a three-season or four-season design. A smaller screened-in sunroom tends to fall on the lower end, while a fully insulated four-season room with custom glass can reach the higher range. We use only premium-grade aluminum framing, energy-efficient glass, and storm-rated construction to ensure your new addition holds up beautifully in St. Augustine’s coastal environment.

Many families transform their new sunrooms into home offices, playrooms, fitness areas, or simply a peaceful spot to enjoy views of the backyard or pool. From design and permitting to construction and finishing touches, our team will guide you every step of the way to create a sunroom that blends seamlessly with your home while enhancing its comfort and resale value.

Commercial Sunrooms in St. Augustine, FL

Businesses across St. Augustine are discovering the value of commercial sunrooms. From restaurants in Historic Downtown looking to expand their seating areas, to beachfront hotels along A1A adding bright, weather-protected lounges, commercial sunrooms create more usable space while enhancing comfort and customer experience.

On average, a commercial sunroom project in St. Augustine ranges from $30,000 to $100,000+, depending on the size, materials, and level of customization. A simple enclosed patio for a café or bistro may be on the lower end, while a fully enclosed, hurricane-rated addition for a resort or event venue can be higher. Our team specializes in custom commercial sunroom construction that complies with St. Johns County building codes and stands up to coastal elements including salt air, high winds, and heavy rain.

We’ve worked with local businesses to design and build restaurant enclosures, clubhouse additions, and showroom extensions that look great and perform year-round. With hurricane-rated framing, insulated glass, and energy-efficient systems, your investment will be built to last offering both modern functionality and long-term value for your business.

Before and after pool cage rescreening and enclosure restoration project in St. Augustine, FL.