Flooring · Carpet and Subfloor
Subfloor Replacement Cost, Permits and Who Does the Work
Removing an existing subfloor and installing a new one, typically handled by a carpenter.
Model reviewed August 2026
Typical cost
$2,400
National, standard scope
Range
$900 – $6,000
Low to high scope
Trade
Carpenter
DIY difficulty 2/5
Permit
Scope dependent
Depends on how far the work goes
Do I need a permit for subfloor replacement?
Depends on scope
A like-for-like subfloor job is often exempt, but changing capacity, routing, structure or wiring usually triggers a permit. Always confirm with the building department that has jurisdiction over your address.
Cost breakdown
Modeled national figures for a standard single-family job.
| Low endSimple scope, easy access, no surprises | $900 |
|---|---|
| TypicalWhat most homeowners pay | $2,400 |
| High endLarge scope, upgrades or difficult conditions | $6,000 |
| Job type | Project |
| Cost varies by location | Moderate |
Calculators for this job
Related jobs
Related projects homeowners often plan together.
Also searched as
You may also hear this called:
replace subfloor · new subfloor · subfloor replacement cost · subfloor swap
Frequently asked questions
How much does subfloor replacement cost?
Most homeowners pay between $900 and $6,000, with $2,400 typical for a standard single-family job. Figures are modeled national estimates, not quotes.
Do I need a permit for subfloor work?
Sometimes. Permitting depends on scope and on your jurisdiction; like-for-like work is often exempt while anything structural, electrical or gas-related usually is not.
Who does subfloor replacement?
A carpenter handles this job. DIY difficulty is rated 2/5 (5 = very DIY friendly).
Does the price change much by location?
Yes. Across the states we price, the typical cost ranges from $2,160 to $3,145 — about a 46% spread — driven by labor rates, code requirements and permit fees.