How Much Does Sunroom Addition Cost in Knoxville, TN?
Knoxville pricing is 15% below the national average. Updated for 2026.
Based on local labor rates, varied climate conditions, and Knoxville's diversified economy.See our methodology
Sunroom Addition Pricing in Knoxville, TN
Knoxville is one of the more affordable markets for sunroom addition, with costs running about 15% below the national average. The city's diversified economy and balanced labor market create favorable conditions for competitive pricing. Getting multiple quotes from the 190K-population metro area is straightforward.
Local climate plays a direct role in sunroom addition costs here. Extreme heat drives heavy HVAC demand; severe storms create periodic repair surges.
Market-specific factors matter in Knoxville: no state income tax in many Southern states helps keep overall costs lower.
Knoxville has moderate permitting requirements. Depending on the scope of your sunroom addition project, you may need local permits. A licensed contractor will handle the permitting process as part of the job in most cases.
Knoxville vs National Average
What Affects Sunroom Addition Cost in Knoxville?
Type
Screen room/porch enclosure: $5,000-$12,000. Three-season: $10,000-$25,000. Four-season (insulated): $20,000-$50,000+
Size
Small (100 sq ft): $10,000-$20,000. Average (200 sq ft): $18,000-$35,000. Large (300+ sq ft): $30,000-$60,000
Foundation
Existing patio: $0-$2,000 prep. New concrete slab: $3,000-$6,000. Pier/post: $2,000-$5,000
Knoxville Market Conditions
no state income tax in many Southern states helps keep overall costs lower
Local Climate Impact
extreme heat drives heavy HVAC demand; severe storms create periodic repair surges
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Tips to Save on Sunroom Addition in Knoxville
- 1.Three-season sunrooms cost 40-60% less than four-season ($8,000-$20,000 vs $20,000-$50,000)
- 2.Prefab sunroom kits ($5,000-$15,000 for materials) save significantly over custom-built
- 3.Build on an existing concrete patio to save $3,000-$8,000 on foundation
- 4.If in a warm climate, a three-season room may be perfectly adequate
📈 Sunroom Addition in Knoxville Cost Trends (2020–2024)
Prices have increased +17.7% over the last 5 years
| Year | National Avg | YoY Change |
|---|---|---|
| 2020 | $18,050 | — |
| 2021 | $18,808 | +4.2% |
| 2022 | $20,030 | +6.5% |
| 2023 | $20,591 | +2.8% |
| 2024 | $21,250 | +3.2% |
Based on national averages adjusted for annual inflation. Actual costs vary by location and project scope.
💬 What Did You Pay?
Real costs reported by homeowners for Sunroom Addition in Knoxville
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Frequently Asked Questions
Does a sunroom add value to a home?
Yes, but the ROI varies. A well-built four-season sunroom returns about 50-75% of its cost. Three-season rooms return slightly less. The value depends heavily on climate — sunrooms are more valued in northern and temperate climates where they extend outdoor enjoyment.
Do I need a permit for a sunroom?
Almost always yes — a sunroom is a structural addition to your home that must meet building codes. Permits typically cost $500-$2,000 and require structural, electrical, and sometimes HVAC inspections.
Why does sunroom addition cost different in Knoxville than other cities?
Knoxville's costs reflect local labor rates driven by the diversified economy, varied climate conditions that affect materials and scheduling, and moderate permitting requirements. The balanced labor market also influences competitive pricing.
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