Carpeting a 20×20 room, or 400 square feet, typically costs $1,200-$4,800 installed, with many homeowners paying about $2,600. Carpet grade, padding, regional labor rates, floor preparation, and the extra material needed for seams and waste drive the final price.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Carpet and pad installed | $1,200 | $2,600 | $4,800 | About $3-$12 per finished sq ft |
| Carpet material | $800 | $1,600 | $3,200 | Roughly 440 sq ft ordered, including waste |
| Padding | $160 | $360 | $640 | About $0.40-$1.60 per sq ft |
| Installation labor | $240 | $640 | $1,200 | Varies with seams, stairs, and room access |
Assumptions: A rectangular 400-square-foot room, standard access, carpet over a sound subfloor, and no major floor repairs.
Typical installed price for a 400-square-foot room
Most quotes combine carpet, pad, and installation. A budget polyester or entry-level carpet with basic padding may total $1,200-$2,000. Midrange nylon or polyester with a better pad often lands around $2,000-$3,400. Dense, premium carpet with upgraded padding can reach $3,400-$4,800 or more.
A practical planning range is $5-$8 per finished square foot for a midrange installation. Installers may calculate material using roughly 430-460 square feet rather than exactly 400, because carpet comes in fixed widths and requires trimming. Ask whether the quote lists ordered carpet area or room area.
What carpet, padding, and labor add to the quote
Material choices set much of the budget, but labor and job-specific charges can change the total. The ranges below show common components for a 20×20 room; they are not all included in every contractor’s quote.
| Quote component | Typical rate | Estimated 20×20 cost | What changes it |
|---|---|---|---|
| Carpet material | $2-$8 per ordered sq ft | $880-$3,520 | Fiber, density, pile, and brand |
| Padding | $0.40-$1.60 per sq ft | $176-$704 | Thickness, density, and moisture barrier |
| Installation labor | $0.60-$2.50 per finished sq ft | $240-$1,000 | Seams, layout, and local rates |
| Removal and disposal | $0.50-$2 per sq ft | $200-$800 | Old carpet, pad, and disposal fees |
| Floor preparation | $1-$4 per sq ft of affected area | $100-$1,000+ | Subfloor repairs or leveling |
Confirm whether labor includes moving furniture, removing old flooring, and installing new tack strips. Those tasks may appear as separate line items rather than in the per-square-foot installation rate.
How fiber, padding thickness, and seams change the price
Fiber affects durability and price: polyester is often less expensive, while nylon usually costs more but can better withstand regular foot traffic. Wool and specialty carpet can exceed the high end of standard estimates. Pile style and density also matter; a dense loop or textured carpet may cost more than a basic low-pile option.
Padding should match the carpet and manufacturer’s requirements. Basic 6-pound rebond pad is commonly less expensive than denser 8-pound pad or memory-foam options. In a 20-foot room, carpet width and layout can require one or more seams; patterned carpet may need extra material to align the design. Pattern matching and difficult seam placement can raise both material waste and labor.
Why room layout and subfloor condition matter
A clear rectangle is generally simpler than a room with alcoves, closets, angled walls, or built-in cabinets. Carpet rolls commonly come in 12-foot widths, so a 20-foot span may require a seam and careful placement. If the carpet has a large repeat pattern, the installer may need additional length to match it.
Subfloor repairs are separate from ordinary installation. Loose plywood, squeaks, moisture damage, or uneven concrete can require patching or leveling before carpet goes down. A small repair may cost $100-$300; broader leveling or replacement can add several hundred dollars or more. Have the installer inspect the floor before treating a low quote as the complete price.
Three realistic quotes for different carpet grades
These examples assume 440 square feet of material to cover the 400-square-foot room, standard padding, and no major subfloor work. Local labor and product availability can shift each estimate.
| Scenario | Material and pad | Labor and extras | Estimated total |
|---|---|---|---|
| Budget polyester, basic pad | $1,050-$1,450 | $350-$650 | $1,400-$2,100 |
| Midrange nylon, upgraded pad | $1,750-$2,500 | $500-$850 | $2,250-$3,350 |
| Premium dense carpet, quality pad | $2,900-$4,000 | $700-$1,100 | $3,600-$5,100 |
Assumptions: One open room, typical material waste, and basic installation; furniture moving, removal, and repairs may be extra.
Regional labor rates can shift a 20×20 carpet estimate
Prices in high-cost metro areas may run about 10%-25% above these broad ranges, particularly where installer availability is limited. Smaller cities and rural markets may come in roughly 5%-15% below typical metro pricing, although travel or delivery charges can narrow the difference.
Compare quotes from contractors serving the same area and using similar carpet, pad, and removal assumptions. A lower per-square-foot rate is not necessarily cheaper if disposal, furniture moving, or floor preparation is excluded. Request the total installed price and the measured carpet quantity in writing.
Removal, furniture, and delivery charges to check
Removing existing carpet and pad commonly adds $200-$800 for 400 square feet, depending on disposal fees and whether tack strips need removal. Moving furniture may cost $50-$200 or more, especially for heavy items or a densely furnished room. Delivery may be included, charged as a flat fee, or priced by distance.
Closets, transitions to other flooring, and replacement tack strips can also add charges. Ask whether the estimate includes doorway transitions and cleanup, and whether the contractor charges a minimum service fee. Written line items help distinguish a complete installation quote from a carpet-only price.
Ways to lower the carpet bill without cutting scope
Choose a carpet that meets the room’s traffic needs without paying for a premium fiber or pattern that will not improve performance. Standard colors and in-stock rolls may cost less than special orders. Keep the existing floor if it is sound, and move smaller furniture before installation if the contractor’s policy allows it.
Get at least three itemized estimates with the same room dimensions, carpet grade, pad specification, and removal request. Check whether a sale price includes installation and whether it changes the warranty or service terms. Compare total installed cost, not just the carpet price per square foot.