Section A / Cost Summary
Termite damage repair cost calculator
US 2026 termite damage repair costs run from $300 for cosmetic baseboard and drywall surface work to $35,000 or more for load-bearing framing and sill replacement. Standard homeowners insurance does not cover any of it.
Cosmetic
$300-2,000
Moderate
$2,000-5,000
Significant
$5,000-15,000
Severe
$15,000-35,000+
Inspector's Notes
Repair workflow
- 01Treat the active infestation first, always
- 02Wait 1 to 2 weeks (liquid) or 3 to 6 months (bait)
- 03WDIR re-inspection to confirm no active feeding
- 04Scope damage by component (cosmetic vs structural)
- 05Structural engineer for any load-bearing member
- 06Repair, finish, post-repair inspection
Independent cost guide. We are not a pest control company or a general contractor. Verify all repair scopes with a licensed contractor and a structural engineer where load-bearing members are involved.
Section B / Estimator
Run a 2026 repair cost estimate
No email, no zip-code gate. Enter the damaged components and quantities; the estimate updates instantly from per-unit rates verified June 2026.
Form TT-2026 / Repair Worksheet
Termite Damage Repair Cost Calculator
Damaged baseboard and trim to replace and paint
Rooms needing wall sections opened, patched, repainted
Damaged subfloor area to cut out and replace
Joists reinforced with a new member bolted alongside
Joists too far gone to sister, full replacement
Sill plate length to replace (carries the wall load)
Door or window headers needing engineered replacement
Repair Estimate
$420-$1,200
Cosmetic tier
- Baseboard
- $120-$300
- Drywall patching
- $300-$900
Treat first, always. Repairing before the active colony is eliminated means paying for the repair twice. Treatment runs $500 to $3,000 for common subterranean methods: run the treatment estimate.
Estimate covers components in isolation. Bundled projects share demolition and finish costs; real quotes can land below the sum of parts. Per-unit rates verified June 2026 against HomeGuide and Angi cost guides.
Section C / Damage severity tiers
Five tiers of termite damage repair scope
The cost spread between tiers is wide because the repair scope changes character at each step. Cosmetic tier is finish-only. Moderate tier brings in framing members. Significant tier requires shoring. Severe tier requires engineering. Catastrophic tier requires reconstruction.
| Tier | Cost |
|---|---|
| Cosmetic | $300-$2,000 |
| Moderate | $2,000-$5,000 |
| Significant | $5,000-$15,000 |
| Severe | $15,000-$35,000+ |
| Catastrophic | $35,000-$100,000+ |
Cosmetic and significant tier bands from HomeGuide and Angi US 2026 aggregated repair data (minor $300-$2,000, major structural $5,000-$15,000+). The moderate tier is our interpolation between the two sourced bands; severe reflects full-perimeter sill replacement project data ($10,000-$40,000). Catastrophic tier figures are constructed from structural reconstruction cost data where termite damage triggered the project.
Section D / By component
Typical replacement cost by structural component
A single damaged component is the easiest project to scope. The cost adds up quickly once multiple adjacent members are involved, because demolition, shoring, and finish work compound.
| Component | Cost |
|---|---|
| Baseboard replacement | $6-$15/lf |
| Drywall patch | $300-$900/room |
| Subfloor replacement | $3-$10/sq ft |
| Floor joist sistering | $200-$1,000/joist |
| Floor joist replacement | $500-$2,500/joist |
| Wall framing | $11-$32/lf |
| Sill plate replacement | $120-$200/lf |
| Header / load-bearing beam | $800-$10,000 |
| Structural engineer evaluation | $350-$900 |
Component prices reflect contractor labor plus materials for the component in isolation, verified June 2026 against HomeGuide joist repair, Angi sill plate, Angi subfloor, and Angi drywall cost guides. Real projects bundle multiple components and incur shared demolition and finish costs.
Section E / Insurance reality
Standard HO-3 and HO-5 homeowner policies treat termite damage as a maintenance issue and explicitly exclude it. Progressive, Allstate, State Farm, Geico, USAA, Liberty Mutual: every major carrier carries the same exclusion. There is no endorsement, rider, or premium add-on that adds termite coverage to a standard homeowners policy.
The single useful exception is a downstream covered peril. If termites chew through electrical wiring and start a fire, the fire damage itself may be covered. If termites chew through a plumbing tray and water damage results, the water damage may be covered. The termite damage that caused the downstream loss is never covered.
Home warranty products typically exclude termite damage as well. HomeServe and comparable warranties do not cover the structural repair scope. Some warranty providers offer pest control add-ons at $100 to $200 per year, but those are treatment products, not damage-repair products.
Full insurance breakdown ->Termite bonds with a repair clause
A termite bond with a repair clause is the financial product that actually covers the repair scope. Premium bonds at $300 to $500 per year from licensed pest control operators typically include repair coverage up to a cap of $100,000 to $500,000 for damage that occurs while the bond is active. The cap is meaningful in the moderate-to-significant tier but may not fully cover the most severe damage scopes.
Bond with repair clause: $300 to $500 per year, $500,000+ repair cap typical
Bond, retreatment only: $150 to $300 per year, no repair coverage
The repair clause is the line on the contract that separates the two tiers. Verify in writing.
Section F / Treat before repair
Always treat the active infestation before any structural repair
Treatment first is the non-negotiable rule. Repairing termite-damaged framing without first eliminating the active colony places new wood members into an environment where the foraging colony is still active. The new framing becomes the next damaged framing, and the repair work has to be done again. The cost of doing repair first is the cost of doing the repair twice.
Sequencing depends on the treatment method. Liquid barrier treatments (Termidor SC, Premise, Altriset) reach effective control within 1 to 2 weeks. Bait colony elimination systems (Sentricon, Trelona) take 3 to 6 months to confirm colony elimination. Tent fumigation for drywood is effectively instant for the targeted structure but provides zero residual protection against reinvasion.
A pre-repair WDIR or NPMA-33 re-inspection is the standard checkpoint. The inspector confirms that the prior infestation has been eliminated and that the affected framing members are no longer being actively fed on. The report is also the documentation that contractors and structural engineers rely on when scoping the repair: which members are damaged, what gallery patterns are present, and whether adjacent members need to be probed for hidden damage.
The two-step sequencing affects financial scope as well. Treatment runs $500 to $3,000 for the most common subterranean methods. Repair runs the four-tier spread documented above. A homeowner who compresses the steps to save on contractor mobilization creates the recurring-damage problem and pays the larger repair cost twice. Mobilization cost is small relative to repair cost; the sequencing is worth the extra step.
Section G / Real estate impact
Disclosure, NPMA-33, and the sale-blocking threshold
Termite damage is a required seller disclosure in most US states. The disclosure applies to known active infestations, prior infestations that were treated, and any known structural damage attributable to wood-destroying organisms. Real estate agents and title companies generally require the disclosure to be completed before listing or before purchase contract acceptance, depending on the jurisdiction.
The WDIR (Wood Destroying Insect Report) or NPMA-33 inspection form is the buyer-protection standard in real estate transactions. A licensed pest control inspector documents (a) any active infestation observed at the time of inspection, (b) any prior infestation evidence such as treated wood, mud tubes, or gallery damage, and (c) any visible damage attributable to wood-destroying organisms. The report is required for VA loan transactions in termite-pressure regions and is commonly required by FHA underwriters as well.
The sale-blocking threshold in most transactions is roughly $5,000 in damage. Below that figure, buyers typically accept the damage as a known condition. Above it, repair-credit negotiation is normal: the seller may credit the buyer at closing, may complete the repairs before closing, or the parties may walk. Damage above $15,000 commonly triggers contract renegotiation; damage above $35,000 typically triggers a walk unless the seller materially reduces the price.
An active, transferable termite bond is a meaningful asset in a sale. A premium bond with a repair clause that transfers to the new owner provides ongoing protection against future infestation and continues to cap the new owner's repair liability. Buyers should ask for the bond documentation as part of due diligence; sellers should confirm transferability with the bond provider before listing.
Section H / FAQ
Common questions
How much does termite damage repair cost in 2026?+
US 2026 termite damage repair costs run from $300 for cosmetic baseboard and drywall surface work to $35,000 or more for load-bearing framing and full sill replacement. The four most useful tiers: cosmetic (baseboard, trim, drywall surface) $300 to $2,000; moderate (wall studs, subfloor sections, joist ends) $2,000 to $5,000; significant (multiple floor joists, wall framing, partial sill replacement) $5,000 to $15,000; severe (load-bearing framing, full sill replacement, foundation work) $15,000 to $35,000 or more.
Does homeowners insurance cover termite damage repair?+
No. Standard HO-3 and HO-5 homeowner policies exclude termite damage as a maintenance issue across every major carrier. The exception is a downstream covered peril: a fire caused by termites chewing through electrical wiring, or water damage from a chewed-through plumbing tray. The termite damage itself is never the covered loss. Termite bonds with a repair clause and the seller-paid repair credit at sale are the practical financial protections.
Should I treat termites or repair the damage first?+
Always treat first. Repairing termite-damaged wood without first eliminating the active infestation produces a recurring problem: the new framing and finish materials are placed back into an environment where the colony is still foraging. Liquid barrier treatments take 1 to 2 weeks to be fully effective. Bait colony elimination takes 3 to 6 months. A pre-repair WDIR re-inspection is the standard checkpoint before any structural repair begins.
How much does it cost to replace a floor joist damaged by termites?+
Sistering (bolting a new joist alongside the damaged one) runs $200 to $1,000 per joist and is the standard repair where the damaged member can stay in place. Full joist replacement runs $500 to $2,500 per joist depending on length, access, and whether load support is required during the work. Subfloor above the joist often needs replacement as well at $3 to $10 per square foot, roughly $900 to $3,000 for a 300 sq ft room. If multiple adjacent joists are damaged, the total project moves into the moderate-to-significant tier ($5,000 to $15,000) because additional shoring, demolition, and finish work compounds the per-joist cost.
What does termite damage to a sill plate cost to repair?+
Sill plate replacement is one of the most expensive single-component termite repairs because the sill carries the entire wall load. Replacement runs $120 to $200 per linear foot, so a single 30 to 40 foot wall typically lands at $3,600 to $8,000 once shoring, removal of the affected sill section, replacement with pressure-treated lumber, and reattachment of the framing above are included. Full-perimeter replacement (most homes need 100 to 300 linear feet) averages around $22,000 and can reach $40,000, which is what moves multi-wall sill damage into the severe tier.
How does termite damage affect a home sale?+
Termite damage is a required disclosure in most US states, and a WDIR or NPMA-33 inspection is the buyer-protection standard in real estate transactions. Active infestations or significant prior damage typically trigger repair-credit negotiations. Damage estimates above $5,000 are commonly sale-blocking unless the seller agrees to remediate or to credit the buyer at closing. Buyers should ask for treatment records and any transferable termite bond documentation as part of due diligence.
Can I claim termite damage on a home warranty?+
Standard home warranties such as American Home Shield and HomeServe typically exclude termite damage along with all wood-destroying-insect damage. Some home warranty providers offer pest control add-ons at $100 to $200 per year, but coverage of structural termite damage is rare and is usually narrowly limited even where it appears. A termite bond from a licensed pest control operator with a repair clause is the financial product that actually covers the repair scope.
How can I tell whether termite damage is cosmetic or structural?+
Cosmetic damage is limited to non-load-bearing materials: baseboard, trim, drywall surface, interior partition framing. Structural damage involves load-bearing elements: floor joists, wall studs in load-bearing walls, sill plates, headers, and roof framing. A WDIR inspection or a structural engineer evaluation is required to make the call in any case where the affected members carry load. Tapping with a screwdriver, probing for gallery damage, and moisture metering are the standard field methods, but engineering judgment is the standard for the cosmetic-versus-structural call.
Section I / Action register
Where to next
Open file
Treatment Cost Calculator
Run a 2026 treatment cost estimate by home size, region, and method. Treatment is step one before repair.
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Damage and Insurance
Full breakdown of why standard HO policies exclude termite damage and the financial protection options that work.
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Termite Bond ROI
Bond pricing with and without repair clause. Interactive break-even calculator over 5, 10, and 20 years.
Open file
How to Get Quotes
14-item checklist for sourcing treatment and repair quotes. Red flags and the 10 questions to ask every operator.
Open file
Inspection Cost
WDIR and NPMA-33 inspection cost for home buyers and sellers. VA and FHA loan inspection rules.
Open file
Signs of Termites
Mud tubes, frass, swarmers, hollow wood, blistered paint. The field indicators of active infestation.
This page is an independent cost guide. It is not pest control advice, structural engineering advice, or insurance advice, and we are not a pest control company, a contractor, or an insurance broker. Verify every figure with a licensed pest control operator, a licensed contractor, and (for load-bearing repairs) a structural engineer before committing to any scope of work.