Sunrooms in Knoxville & East Tennessee
Custom sunroom design, engineering, and installation by ATC Sunrooms — Knoxville’s trusted sunroom contractor for over 25 years.
Custom Sunrooms Built for East Tennessee Living
Every ATC sunroom is designed around your home’s architecture and your family’s lifestyle. From all-season rooms with full HVAC to budget-friendly three-season spaces, we handle everything — permits, engineering, construction, and finishing.
Why Knoxville Homeowners Choose a Sunroom Addition
A sunroom addition is one of the smartest home improvements you can make in East Tennessee. With our mild winters and warm, long summers, a sunroom lets you enjoy the beauty of the Smoky Mountain region from the comfort of a climate-controlled space — without the bugs, pollen, or unpredictable weather.
At ATC Sunrooms, we’ve designed and built custom sunrooms for Knoxville homeowners for more than 25 years. Every project starts with a free, no-pressure in-home consultation where we evaluate your space, discuss your vision, and provide a detailed estimate. Our sunrooms are engineered for Tennessee’s climate — designed to handle summer heat, winter cold, and everything in between.
Whether you want a bright, open space for morning coffee, a year-round entertaining area, or a peaceful retreat surrounded by your backyard views, we build sunrooms that fit your home, your lifestyle, and your budget.
Benefits of Adding a Sunroom
- Increased home value — Sunroom additions typically return 50-80% of their cost at resale, and many appraisers count the space as additional square footage
- Year-round living space — Gain hundreds of square feet of usable space that connects your indoor and outdoor environments
- Natural light — Floor-to-ceiling glass walls and skylights flood your home with sunlight, reducing the need for artificial lighting
- Energy efficiency — Modern sunrooms feature Low-E glass, thermal breaks, and insulated framing that minimize heating and cooling costs
- Versatility — Use your sunroom as a dining area, home office, playroom, reading nook, plant conservatory, or entertaining space
Types of Sunrooms We Build
Every home is different, and so is every sunroom. ATC Sunrooms offers four distinct sunroom styles to match your needs, climate preferences, and budget. Explore each type to find the right fit for your home.
All-Season Sunrooms
Enjoy your sunroom 365 days a year. All-season (four-season) sunrooms are fully insulated and designed to connect to your home’s HVAC system, providing comfortable temperatures through Knoxville’s hottest summers and coldest winters. These rooms feature thermally broken aluminum frames, insulated glass panels, and weathertight construction.
Three-Season Sunrooms
The most popular choice for East Tennessee homeowners. Three-season sunrooms provide comfortable use from early spring through late fall. They feature single-pane or dual-pane glass, aluminum frames, and excellent ventilation with sliding or removable windows. A cost-effective way to add beautiful living space to your home.
Florida Rooms
Also known as Arizona rooms or lanais, Florida rooms offer a bright, airy addition using glass knee walls, aluminum framing, and generous window openings. They’re an excellent choice for homeowners who want a casual, open-feeling space at a more accessible price point. Many Florida rooms can later be upgraded to a three-season or all-season configuration.
Solariums & Conservatories
For homeowners who want the ultimate indoor-outdoor experience, solariums feature glass walls and a glass roof, creating a stunning greenhouse-like space bathed in natural light from every angle. Perfect for plant lovers, dining areas, or creating a dramatic architectural statement. Our solariums use tempered safety glass and UV-filtering coatings.
The ATC Sunrooms Difference
25+ Years of Experience
ATC Sunrooms has been designing and building custom sunrooms in Knoxville and East Tennessee since 1999. We’ve completed hundreds of projects across Knox, Blount, Anderson, and Sevier counties. Our experience means we know what works in Tennessee’s climate — and what doesn’t.
Custom Design for Every Home
No cookie-cutter designs. Every sunroom we build is engineered specifically for your home’s architecture, your lot’s orientation, and your family’s needs. Our design team works with you to choose the right sunroom style, glass type, roofing system, and finish options.
Local, Licensed & Insured
We’re a locally owned Tennessee sunroom company with local crews — not a national franchise that subcontracts to whoever is available. Our contractors are licensed, insured, and experienced in residential sunroom construction. We handle permitting, inspections, and all code compliance.
Warranty & Financing
Every ATC sunroom is backed by our workmanship and materials warranty. We also offer flexible financing options so you can enjoy your new sunroom without the financial stress. Ask about our current financing programs during your free consultation.
Our Sunroom Installation Process
Building a sunroom doesn’t have to be complicated. Our streamlined process keeps your project on schedule and on budget from start to finish.
1. Free In-Home Consultation
We visit your home, evaluate the site, discuss your goals, and take measurements. You’ll receive a detailed, written estimate with no obligation and no pressure.
2. Custom Design & Engineering
Our design team creates plans tailored to your home’s architecture. We help you select the sunroom type, glass options, roofing, electrical, and finishing details.
3. Permitting & Prep
We handle all building permits and HOA approvals. Our team prepares the foundation, framing connections, and utility tie-ins before construction begins.
4. Professional Installation
Our local crews build your sunroom on-site with precision and care. Most sunroom installations are completed in 2-6 weeks depending on size and complexity.
5. Final Walkthrough & Warranty
We walk through the completed sunroom with you, ensure everything meets your expectations, and provide your warranty documentation. Your satisfaction is our top priority.
How Much Does a Sunroom Cost in Knoxville?
Sunroom costs in the Knoxville area vary based on the type of sunroom, size, materials, and site conditions. Here are general price ranges to help you plan your budget:
| Sunroom Type | Typical Price Range | Best For |
|---|---|---|
| Three-Season Sunroom | $15,000 – $35,000 | Budget-friendly, spring-through-fall use |
| All-Season Sunroom | $25,000 – $70,000+ | Year-round comfort, HVAC-connected |
| Florida Room | $10,000 – $25,000 | Casual space, open feel |
| Solarium / Conservatory | $30,000 – $90,000+ | Dramatic glass design, architectural statement |
About These Prices
The costs shown on this page are industry averages based on national and regional market research. They do not represent specific pricing from ATC Sunrooms and are provided for general budgeting purposes only. Actual project costs vary based on size, materials, site conditions, and design choices.
ATC Sunrooms consistently offers more competitive pricing than national franchise brands and many local competitors. As an independent, owner-operated company with low overhead, no franchise fees, and no expensive showrooms to maintain, we pass those savings directly to you. Our pricing reflects the true cost of quality materials and skilled labor — not corporate markups. Request your free estimate to see the difference.
Every project is unique. The best way to get an accurate price for your sunroom is to schedule a free in-home consultation. We’ll evaluate your space, discuss options, and provide a detailed written estimate — no obligation, no pressure.
Frequently Asked Questions About Sunrooms
Do I need a building permit for a sunroom in Knoxville?
Yes, most sunroom additions in Knox County and surrounding areas require a building permit. ATC Sunrooms handles all permitting as part of our standard process, so you don’t have to worry about paperwork or inspections. We ensure every project meets local building codes and HOA requirements.
How long does it take to build a sunroom?
Most sunroom installations take 2 to 6 weeks from the start of construction. The total timeline from initial consultation to completion is typically 6 to 12 weeks, depending on permitting, design complexity, and material availability. We’ll give you a clear timeline during your consultation.
Will a sunroom increase my home’s value?
Sunroom additions typically recoup 50-80% of their cost at resale, making them one of the better-returning home improvements. Beyond the financial return, sunrooms make homes more attractive to buyers and can reduce time on market. The exact ROI depends on the type of sunroom, quality of construction, and local real estate conditions.
What’s the difference between a sunroom and a screen room?
A sunroom is an enclosed addition with glass walls and a solid roof, providing protection from weather and insects while allowing natural light. A screen room uses mesh screens instead of glass, offering fresh air and insect protection but no climate control. Sunrooms cost more but provide year-round usability. Read our full comparison guide to help you decide which is right for your home.
Can you build a sunroom on an existing deck or patio?
In many cases, yes. Converting an existing concrete patio, covered porch, or deck into a sunroom is one of the most common projects we handle. The existing structure may need reinforcement to support the sunroom, and we’ll evaluate that during your consultation. Converting an existing space is often more cost-effective than building from scratch. Learn more about our patio enclosure options.
What areas do you serve?
ATC Sunrooms serves the greater Knoxville area and East Tennessee, including Farragut, Maryville, Oak Ridge, Sevierville, Lenoir City, Clinton, Alcoa, and surrounding communities. View all service areas.
Ready to Add a Sunroom to Your Home?
Schedule your free, no-obligation in-home consultation today. We’ll evaluate your space, discuss your options, and provide a detailed written estimate.
Explore Our Other Services
In addition to custom sunrooms, ATC Sunrooms offers a full range of outdoor living solutions for Knoxville and East Tennessee homeowners:
- Screen Rooms — Enjoy the outdoors without bugs. Our screen rooms provide insect protection with unobstructed views and fresh air.
- Patio Enclosures — Convert your existing patio, porch, or deck into a fully enclosed living space.
- Exterior Services — Roofing, siding, gutters, windows, and skylights through our sister company network.
