Quick answer: Termite damage repair costs $1,000 to $10,000 or more, averaging about $3,000. Cosmetic fixes start near $300; major structural repairs such as sill plate replacement reach $12,000 to $35,000. These are national 2026 ranges attributed to national cost data — a local inspection sets the real figure, because termite damage routinely extends past what’s visible.
Termite damage repair costs $1,000 to $10,000 or more, and the average termite damage repair runs about $3,000. Cosmetic fixes sit at the low end; structural repairs to load-bearing wood — the kind Formosan termites cause in New Orleans homes — run to the high end and beyond. The figures on this page are national 2026 ranges; a local inspection sets the actual number, because termite damage routinely extends past what’s visible until the structure is opened.
How much does termite damage repair cost?
Termite damage repair cost depends on whether the damage is cosmetic or structural. The table below breaks down common repairs; New Orleans’s Formosan pressure and its many raised, pier-foundation homes push more jobs toward the structural rows.
| Repair | Typical cost (2026) | Notes |
|---|---|---|
| Minor / cosmetic (drywall, trim, paint) | $300 – $2,000 | Surface damage only |
| Floor joist replacement | $350 – $1,000 per joist | Sistering a partly sound joist runs $500 – $1,200 |
| Support beam replacement | $1,500 – $3,000 each | Mildly damaged beams can be sistered instead |
| Wall framing replacement | ~$2,000 per section | Base-of-stud damage |
| Subfloor + major structural (beams, load-bearing walls) | $5,000 – $15,000+ | Often needs an engineer's sign-off |
| Sill plate replacement | $12,000 – $35,000 | $100 – $200 per linear foot; the home is lifted on hydraulic jacks |
| Structural engineer assessment | $300 – $900 | Required for load-bearing damage |
Ranges attributed to national cost data (HomeGuide / Angi / Bob Vila, 2026).
What drives the cost of termite damage repair?
Termite damage repair cost is driven by how much structural wood is compromised. Four factors move the number: whether the damage is cosmetic or structural, how far it has spread, whether load-bearing members are involved, and how much hidden damage surfaces once the structure is opened. Because Formosan damage often reaches past the visible surface, a 10–25% contingency for discovered damage is standard — the sill plate you can see may sit next to joists you can’t. Damage to load-bearing members raises the cost further, since those repairs require a structural engineer’s assessment before work begins.
How much does sill plate replacement cost in New Orleans?
Sill plate replacement is the most expensive termite repair, costing $12,000 to $35,000, or $100 to $200 per linear foot. The reason is the method: the sill plate is the horizontal timber resting directly on the foundation, so replacing it means lifting the affected section of the house on hydraulic jacks, removing the hollowed wood, and installing new pressure-treated lumber to code. Most of the cost is the lift, not the wood. New Orleans’s raised and pier-foundation homes put sill plates and rim joists in direct reach of soil-borne Formosan colonies, which is why sill-plate repair comes up often here.
How much does floor joist and beam repair cost?
Floor joist and beam repair is priced per member. Floor joist replacement costs $350 to $1,000 per joist, while sistering a partly sound joist — bolting a new joist alongside the old one — costs $500 to $1,200. Support beam replacement costs $1,500 to $3,000 each, though a mildly damaged beam can be sistered rather than replaced. A structural engineer determines which load-bearing members can be reinforced and which must be replaced.
Does homeowners insurance cover termite damage repair in Louisiana?
Most Louisiana homeowners insurance policies do not cover termite damage repair. Insurers classify termite damage as a preventable maintenance issue rather than sudden accidental loss, so the repair cost typically falls to the homeowner. Coverage terms vary, so a homeowner should read their own policy — but for most New Orleans homes, termite damage repair is an out-of-pocket cost, which is why the ranges above matter.
Is termite treatment part of the repair cost?
No — termite treatment is a separate cost from termite damage repair. Treatment kills the colony; repair rebuilds the wood. Treatment runs about $225 to $2,000 for chemical soil treatment and bait stations, or $2,000 to $8,000 to tent a whole home, and a termite inspection costs $0 to $250 (often waived if you hire the company to treat). Those are the pest professional’s charges. The repair costs on this page are the contractor’s charges to restore the structure afterward — and paying to repair before the colony is confirmed eliminated risks paying twice, because termites move into new wood.
Sources
- HomeGuide — Termite Damage Repair Cost (2026) (cosmetic $300–$2,000; structural $5,000–$15,000+; treat-before-repair; engineer for severe). https://homeguide.com/costs/termite-damage-repair-cost
- HomeGuide — Sill Plate Replacement Cost (2026) ($12,000–$35,000; hydraulic jacks; joist $350–$1,000). https://homeguide.com/costs/sill-plate-replacement-cost
- Angi — Termite Damage Repair Cost (2026) ($1,000–$10,000; avg $3,000). https://www.angi.com/articles/termite-damage-repair-cost.htm
- Bob Vila — Termite Damage Repair Cost (beam replacement $1,500–$3,000 each). https://www.bobvila.com/articles/termite-damage-repair-cost/