How Much Does It Cost to Carpet a 18x20 Room?
Updated July 2026 · Pricing data from Floormath's flooring cost model
At 18 feet by 20 feet, you're covering 360 square feet. Across the 7 carpet product tiers in Floormath's pricing model, a professionally installed job in this room costs $1,033–$8,649. The typical mid-range project comes in around $2,426.
Cost by carpet product tier for a 18x20 room
| Product tier | Material | Installed range | Typical total |
|---|---|---|---|
| Polyester Cut-Pile Carpet | $1.69/sf | $1,033–$2,016 | $1,425 |
| Berber Loop-Pile Carpet | $3.29/sf | $1,470–$3,105 | $2,149 |
| Frieze / Twist Carpet | $3.79/sf | $1,668–$3,303 | $2,347 |
| Nylon Cut-Pile Carpet | $3.99/sf | $1,747–$3,501 | $2,426 |
| Triexta Pet-Friendly Carpet | $4.49/sf | $1,945–$3,699 | $2,624 |
| Pet-Proof Performance Carpet | $6.49/sf | $2,620–$4,788 | $3,506 |
| Wool Carpet — Luxury | $9.99/sf | $3,295–$8,649 | $4,982 |
Totals include 10% material waste and professional installation. Carpet rows include a standard rebond pad at $0.60/sf.
Reading the table for a 18x20 space
Notice how the installed range widens as tiers climb: material choice, not labor, is what separates a $1,033 job from a $8,649 one on the same 360 sq ft floor plan. Labor for mid-range carpet lands near $630 nationally, plus or minus your state's rate. All rows include the 10% cut-waste pros actually order.
See your exact 18x20 room cost with your state's labor rates
Run the free calculator →Frequently asked questions
How many square feet is a 18x20 room?
A 18x20 room is 360 square feet (18 × 20 = 360). Flooring installers order about 10% extra for cuts and waste, so plan on purchasing roughly 396 sq ft of material.
Does the price include installation?
Yes — every figure on this page includes materials with 10% waste plus professional installation labor at national-average rates. Old floor removal, subfloor repair, and stairs are extra.
How much does old floor removal add for this room?
Demolition and haul-away typically run $0.60–$1.50/sf — about $216–$540 for a 18x20 room, depending on what's coming out and local disposal fees.