How Much Does Room Addition Cost in Knoxville, TN?
Average room addition costs in Knoxville range from $7,702 to $10,420. Get a free, customized estimate below.
Room Addition Cost Breakdown — Knoxville, TN
| Item | Unit | Qty | Unit Price | Total |
|---|---|---|---|---|
| Foundation | sq ft | 200 | $12.75 | $2550.00 |
| Framing | sq ft | 200 | $10.20 | $2040.00 |
| Roofing | sq ft | 220 | $6.80 | $1496.00 |
| Electrical & Plumbing | lump sum | 1 | $2975.00 | $2975.00 |
| Estimated Total | $9,061.00 | |||
* Prices are estimates based on Knoxville market rates. Actual costs may vary based on project specifics.
Estimate
Ref ID: EST-2026-XXEK
Date Issued
May 6, 2026
Client
Project Details
Site Address
Start Date
End Date
Scope of Work
Materials
| Material Specification | Units | Amount | Ext. Total | |
|---|---|---|---|---|
$ | $2,550 | |||
$ | $2,040 | |||
$ | $1,496 | |||
$ | $2,975 |
Labor
| Service Specification | Type | Hrs | Rate | Ext. Total | |
|---|---|---|---|---|---|
Craftsmanship Guarantee | $ | $600 |
Contractual Agreements & Conditions
Total
$9,661
Draft
Frequently Asked Questions — Room Addition in Knoxville
How much does room addition cost in Knoxville, TN?
The average cost for room addition in Knoxville, TN ranges from $7,702 to $10,420, depending on project scope, materials, and labor rates. Knoxville costs are below the national average, making it a more affordable market.
How do I get a free room addition estimate in Knoxville?
Use Brixor's free online estimate generator above. Enter your project details, customize line items for your specific needs, and download a professional PDF estimate instantly. No signup or credit card required.
What factors affect room addition costs in Knoxville?
Key factors include project size and complexity, material quality, labor rates in Knoxville (TN), permit requirements, accessibility of the work area, and seasonal demand. Getting multiple estimates is recommended.