Pricing
Subfloor Repair Cost in North Texas
May 13, 2026 8 min read By Fort Worth Flooring Co
Subfloor repair is the one job in this trade where an honest contractor cannot give you a fixed price before starting, and understanding why is the difference between reading a quote as evasive and reading it as accurate.
Why the estimate is a range
A soft spot in a floor is a symptom with a wide range of causes and a wider range of extents.
The visible soft area is where the decking has lost strength. It is almost never where the damage stops. Water that reached the decking also reached whatever is beside and below it, and it travelled along the joists before anyone noticed anything underfoot.
Nobody can see that from above. A moisture meter on the surface reads the surface. The extent becomes knowable when the floor comes up, and not before.
So the quote you should expect is a range with a defined starting scope, an hourly or per-sheet rate for anything beyond it, and an agreement that you get told before that rate is applied. What you should be suspicious of is a firm number from someone who has not opened it — that is either padded to cover the worst case or it is a change order waiting to happen.
The typical ranges
Typical North Texas market figures put subfloor repair or replacement in the region of $3 to $9 per square foot, and these are market ranges rather than a quote.
What puts a job at each end:
Toward $3. Slab-on-grade house, damage confined to a patch of underlayment or a levelling compound, joists not involved because there are none, good access, no finish floor worth saving.
Toward $9 and above. Pier-and-beam house, structural decking to replace, joists to sister or replace, a crawl space with poor access, and a finish floor somebody wants lifted carefully rather than demolished.
That second description covers a lot of the pre-war stock in Fort Worth, Weatherford and Azle, and it is why the same square footage costs very different amounts on either side of the county.
More comes up than you expect
This surprises people and it is not padding.
Subfloor decking spans between joists and is fastened to them. A repair has to be cut back to a joist so the new panel has something to bear on at its edge. A patch that stops in the middle of a joist bay is unsupported at that edge and will deflect and squeak.
In practice, a damaged area a few feet across usually means removing to the nearest joist centres on all four sides. The repaired area is meaningfully larger than the damaged one, and the estimate reflects the repair rather than the damage.
The other line items
Levelling and flatness correction, if the new decking does not land level with the old. Slab grinding runs around $1 to $4 per square foot; a self-levelling pour runs $2 to $8, driven almost entirely by depth.
Joist work. Sistering a split or wet joist while the floor is open costs a fraction of doing it later, and in an older pier-and-beam house it is worth inspecting the joists on any job that has the floor up.
Drying. If the cause was water, the assembly gets dried to a documented moisture target before it is closed. This is a real line item and it is the one most often skipped by someone in a hurry.
Lifting and relaying the finish floor, where it is worth saving.
Two different diagnoses for the same symptom
Worth knowing before you call anyone, because it changes who you need.
In a single-storey house from the 1950s or 1960s — a lot of Haltom City, Hurst, White Settlement — a soft spot is usually decking that has been wet.
In a two-storey house from the 1990s or 2000s, the same feeling underfoot is more often deflection across a long joist span. Nothing is damaged; the floor is simply too flexible for what is on it. That is a framing conversation and sometimes an engineer’s, not a decking replacement.
The symptom is identical. The repair is not. Any contractor who tells you which one it is without lifting a board is guessing.
What to ask for in the quote
A defined opening scope, a stated rate for work beyond it, a commitment to show you what is found before proceeding, a documented drying target if water was involved, and the finish-floor reinstatement priced separately.
That is a quote you can hold someone to. A single number is not.
The ranges in one table
Everything above, gathered in one place. These are typical North Texas market ranges rather than our quote.
Refinishing, repair and preparation
| Item | Typical range |
|---|---|
| Sand and refinish hardwood — 3 coats Species, how many previous sandings the boards have left in them | $3 to $6 per sq ft |
| Screen and recoat — no sanding Only worth it above bare wood; winter heating also opens gaps a recoat cannot fill | $1 to $3 per sq ft |
| Dustless sanding surcharge Containment matters more in an occupied historic home than an empty one | Usually folded into the sq ft rate |
| Board replacement — matched and woven in Matching a 1920s longleaf pine board is the expensive part, not the labour | $100 to $400 per board |
| Water damage repair — after a burst supply line How long the water sat, and whether the subfloor delaminated | $400 to $1,800 per room |
| Subfloor repair or replacement Joist condition in a pier-and-beam house is only knowable once it is open | $3 to $9 per sq ft |
| Slab grinding and flatness correction How far out of tolerance the slab reads against the material's spec | $1 to $4 per sq ft |
| Self-levelling underlayment pour Depth. A 1/4 inch skim and a 1.5 inch pour are not the same job | $2 to $8 per sq ft |
Typical North Texas market ranges, gathered from published contractor pricing. Not a quote.