Average Costs

• Per Square Foot: $3–$10.
• Typical Range: $900–$3,000 (for 300 sq. ft.).
• Average National Cost: $1,560.
• Labor Costs: $25–$30/hour.

Costs by Room

• Bedroom: $450–$1,500.
• Living Room: $900–$3,000.
• Kitchen: $600–$2,000.
• Bathroom: $120–$400.
• Basement: $3,000–$10,000.

Subfloor Materials & Costs (Per Sq. Ft.)

• Plywood: $2.50–$3.50 (common & affordable).
• OSB (Oriented Strand Board): $2.50–$4.50 (cost-effective but weaker).
• Amdry: $3–$10 (moisture-resistant, great for basements).
• DRIcore: $2.50–$9 (moisture-proof, ideal for bathrooms/kitchens).
• Barricade: $2–$10 (soundproof and insulated).
• Warmboard: $7 (for radiant heating systems).
• Concrete: $6 (durable, doubles as flooring).

Additional Costs

• Floor Joist Repair: $100–$300 per joist.
• Mold Remediation: ~$2,000.
• Underlayment: $0.50–$5.50/sq. ft. (adds comfort & insulation).
• Permits: $50–$200 (varies by project size).
• Flooring Installation:
• Hardwood: $6–$12/sq. ft.
• Laminate: $3–$8/sq. ft.
• Carpet: $3–$11/sq. ft.
• Tile: $5–$45/sq. ft.
• Linoleum: $3–$12/sq. ft.

DIY Costs

• Materials: $2–$10/sq. ft.
• Tools:
• Circular Saw: $40+.
• Nail Gun: $150+.
• Crowbar: $10.
• Savings: Avoid $25–$30/hour labor cost but risk improper installation.

Signs You Need Subfloor Replacement

• Squeaky or sagging floors.
• Water damage, warping, or musty smells.
• Cracking tiles or uneven surfaces.

How to Save on Costs

• Get Multiple Quotes: Compare at least three contractors.
• DIY Removal: Save labor costs by removing old subfloor yourself.
• Replace Damaged Sections Only: Avoid full replacement when possible.
• Choose Affordable Materials: Plywood or OSB for budget-friendly options.

Subfloor replacement ensures a stable foundation for your floors. Hiring a pro guarantees durability, while DIY offers savings for experienced homeowners.

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