How Much Does a Sunroom Addition Cost in Tennessee?

If you’re considering adding a sunroom to your Tennessee home, one of the first questions on your mind is probably: how much is this going to cost? The answer depends on several factors, but with the right information, you can set a realistic budget and avoid surprises along the way.

We turned recently to Scott, a certified BetterLiving sunroom installer with over four decades in the remodeling industry, to what he said in a recent podcast to break down what Cookeville-area homeowners can expect to pay for different types of sunroom additions.

Sunroom Costs by Type

Not all sunrooms are created equal, and the type you choose will have the biggest impact on your final price. Here’s what Scott shared about the three main categories:

Screen Rooms: $15,000 – $30,000

Screen rooms are the most affordable entry point into sunroom living. As Scott explains, “Screen rooms are enclosed with screens, making them ideal for spring, summer, and fall.” These rooms protect you from bugs and provide a shaded outdoor space without the cost of glass windows or climate control.

For a standard 12×12 foot screen room, most homeowners pay between $15,000 and $30,000 depending on the foundation situation and specific design choices.

Three-Season Rooms: $35,000 – $50,000

Three-season rooms step up in both comfort and cost. According to Scott, “Three-season rooms are insulated and have windows that can open and close, but they’re not climate controlled.”

These aluminum-framed rooms with glass windows extend your usable season significantly compared to screen rooms. You’ll enjoy comfortable temperatures from early spring through late fall, and many homeowners add portable heaters or ceiling fans to push those boundaries even further.

For a 12×12 aluminum three-season room, expect to invest $35,000 to $50,000.

Four-Season Rooms: $45,000 – $65,000+

If you want year-round comfort with full climate control, a four-season room is the way to go. Scott notes that “Four-season rooms are more heavily insulated and have the option to be climate controlled for year-round use.”

These vinyl-framed rooms can connect to your home’s HVAC system or use independent heating and cooling, making them functional living space regardless of what’s happening outside. A 12×12 vinyl four-season room typically runs $45,000 to $65,000, with larger rooms and premium features pushing costs higher.

Factors That Affect Your Final Price

Beyond the type of sunroom, several other variables influence what you’ll actually pay:

Foundation Requirements

“A solid foundation is essential,” Scott emphasizes. “This could be a concrete pad, a pressure-treated wood deck, or a composite deck.”

If you already have a suitable foundation in place, you’ll save significant money. Scott notes that if there’s not already a concrete patio or another foundation in place, “it will add another week to the project”—and additional cost to your budget.

Size Matters

The 12×12 pricing above represents a popular mid-size option, but sunrooms come in many dimensions. Scott mentions that “common sizes include 10 by 12 foot, 12 by 12 foot, and 12 by 14 foot” for standard rooms, while “larger sunrooms might be 12 foot by 18 feet or 16 feet by 20 feet.”

Naturally, more square footage means higher costs for materials and labor.

Window Quality

Glass quality is often overlooked but matters significantly. As Scott points out, “The quality of the glass affects the usability of the room in extreme temperatures. Single-pane glass has minimal insulation, while double pane glass with low emission gas offers better insulation, making the room more comfortable year round.”

Additional Features

Design choices like insulated knee walls for privacy, electrical work, and flooring upgrades all affect your bottom line. Scott mentions that in three or four-season rooms, “a popular option is to add laminate vinyl plank or LVP” flooring, which adds cost but provides a finished look.

Is a Sunroom Worth the Investment?

Beyond the upfront cost, many homeowners want to know whether a sunroom adds value to their home. The short answer is yes—industry data suggests homeowners recoup 48-60% of sunroom costs at resale, while enjoying the space every day they live in the home.

As the National Association of Home Builders notes, outdoor living spaces consistently rank among the most desired features for today’s homebuyers. A sunroom bridges indoor comfort with outdoor connection in a way few other improvements can match.

For a deeper look at all the benefits, check out our guide on why building a sunroom makes sense for Tennessee homeowners.

What About Timeline?

Scott explains that “an aluminum or vinyl sunroom addition takes about 1-2 weeks” once construction begins. Add foundation work if needed, and you’re looking at roughly three weeks from start to finish—far faster than traditional room additions.

Get an Accurate Quote for Your Home

Every home is different, and the only way to know exactly what your sunroom will cost is to get a professional assessment. Factors like your home’s layout, existing foundation, and design preferences all play a role.

Cookeville Sunrooms offers free in-home consultations throughout the Upper Cumberland region. Their design consultants will evaluate your property, discuss your options, and provide a detailed quote with no obligation.

As Scott puts it, “Our goal is to give you all the information you need to design the best sunroom for your lifestyle.”