Room Addition in Knoxville, TN — Costs $34,218 to $195,533
What does room addition cost in Knoxville? Average $87,990, ranging $34,218–$195,533. Labor runs $29.86/hr locally — 2% below the national average. Free breakdown with material + labor split.
Knoxville, TN Market
-2% vs nationalLabor Rate
$29.86/hr
Material Index
96
Avg Permit Cost
$982
Median Home Price
$247,979
Knoxville is a mid-sized city in Tennessee with a healthy pool of local contractors. Homeowners generally have several options to compare for a room addition, which helps keep pricing competitive. Knoxville offers slightly below-average renovation costs, giving homeowners a small cost advantage compared to most US markets. At a median home price of $247,979, homeowners in Knoxville should weigh the project cost (35.5% of home value) carefully against expected returns to avoid over-improving for the local market.
Low Estimate
$34,218
National: $35,000
Mid-Range
$87,990
National: $90,000
High End
$195,533
National: $200,000
Per Sq Ft
$196
National: $200
Room Addition Cost Calculator for Knoxville
Adjusted for Knoxville's labor rate ($29.86/hr) and material costs (index 96).
Mid-grade materials, good quality fixtures, standard options.
Estimated Total in Knoxville
$87,990
Based on 200 sq ft at mid quality, adjusted for Knoxville market rates.
Local Cost Breakdown
At Knoxville's average rate of $29.86/hr (0% below national avg)
Material cost index 96 (4% below national baseline of 100)
Room Addition vs. Home Value in Knoxville
| Metric | Knoxville | National Avg |
|---|---|---|
| Room Addition (Mid-Range) | $87,990 | $90,000 |
| Median Home Price | $247,979 | $350,000 |
| Project as % of Home Value | 35.5% | 25.7% |
| Estimated ROI | 55% | 55% |
| Median Household Income | $58,880 | $75,000 |
What Affects the Price in Knoxville
- 1Local labor rates ($29.86/hr in Knoxville)
- 2Material cost index (96 vs national 100)
- 3Square footage
- 4Foundation type
- 5Number of stories
- 6Roof integration
Popular Upgrades
- Cathedral ceiling
- En-suite bathroom
- Walk-in closet
Other Projects in Knoxville, TN
Second Story Addition
$195,533
Accessory Dwelling Unit (ADU) Construction
$146,650
Swimming Pool Installation
$63,319
Garage Addition
$53,772
Home Addition
$78,072
Inground Swimming Pool
$63,204
Attic Conversion
$53,869
Swimming Pool Construction
$48,972
Room Addition in Other Tennessee Cities
Planning a Room Addition in Knoxville
Building permits are typically required for a room addition in Knoxville. The average permit fee in this area is $982, though costs vary based on project scope. Permit fees in this market are above average — factor them into your total budget. Plan for 3-6 months from start to finish.
A room addition is a complex project best left to licensed professionals. In Knoxville, skilled contractors charge an average of $29.86/hr, and the specialized nature of this work means cutting corners on labor can lead to costly rework.
For the median Knoxville household earning $58,880/year, this project at $87,990 represents a significant investment. Consider financing options or phasing the work to spread costs over time.
Room Addition — National Guide
See the full national cost guide with DIY tips, cost factors, and ROI analysis.
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