Sunroom Addition Cost in Knoxville (2026): Average Price & Estimate

Sunroom Addition Cost in Knoxville

Estimated sunroom addition cost in Knoxville

$13,200–$41,400

Roughly about 8% below the national average.

Affordable labor keeps prices below average.

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Sunroom size (square feet)

Sunroom type

Foundation

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Based on Knoxville, TN pricing.

Estimated cost range

$13,200–$41,400

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An estimate for planning, not a quote. Get written quotes from local pros below.

Estimate, not a quote. Local prices vary by contractor and project. These are 2026 estimates for Knoxville, TN. Get written quotes from licensed Knoxville contractors before you budget.

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What to know about sunroom addition in Knoxville

Wet soils and heavy rain in Knoxville stress foundations, so grading and drainage are part of a durable fix.

What affects sunroom addition cost in Knoxville

Beyond the local market, the same factors that drive sunroom addition cost everywhere apply in Knoxville:

Size in square feet.
3-season versus insulated 4-season construction.
Amount of glass and frame material.
Foundation: existing slab or new.

Sunroom Addition cost by sunroom type in Knoxville

These figures are adjusted for Knoxville pricing (about 0.92x the national average), so they reflect what local homeowners actually pay.

Estimated sunroom addition cost by sunroom type in Knoxville (2026)

Sunroom type	Cost in Knoxville	Typical total
3-season room	$46.37 to $145 /sq ft	About $9,250 to $29,000
4-season room	$66.24 to $207 /sq ft	About $13,200 to $41,400
Glass conservatory	$99.36 to $311 /sq ft	About $19,900 to $62,100
Solarium (all glass)	$106 to $331 /sq ft	About $21,200 to $66,200

Frequently asked questions

How much does sunroom addition cost in Knoxville?

In Knoxville, TN, sunroom addition typically costs $13,200 to $41,400 in 2026 for a standard project, about 8% below the national average. Your exact price depends on size, materials, and scope.

Why does sunroom addition cost more or less in Knoxville?

Affordable labor keeps prices below average. Labor rates, permit costs, and local demand are the main reasons Knoxville prices differ from the national average.

Do I need a permit for sunroom addition in Knoxville?

Most sunroom addition projects require a permit. Requirements vary by city and Tennessee jurisdiction, so confirm with your local building department. A licensed contractor usually pulls the permit for you.

When is the best time of year for sunroom addition in Knoxville?

In Knoxville, aim for spring or fall. Summer heat, humidity, and afternoon storms can cause delays on exterior projects, and late summer is peak storm season.

Is sunroom addition cheaper outside Knoxville?

Sometimes. Knoxville runs about 8% below the national average. Nearby smaller towns with lower labor costs can come in cheaper, while denser urban areas often cost more. Always compare quotes from contractors who serve your specific area.