Treating woodworm typically costs $300-$2,500 for a localized treatment, while extensive infestations or whole-structure fumigation can reach $3,000-$8,000 or more. The price depends on the beetle species, affected wood volume, access, damage repairs, and whether the treatment requires tenting or replacement lumber.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Localized treatment | $300 | $900 | $2,500 | Accessible beams, flooring, or furniture |
| Whole-structure treatment | $1,500 | $3,500 | $8,000+ | Scope and fumigation method affect price |
| Wood replacement | $500 | $2,000 | $10,000+ | Depends on structural extent |
| Inspection | $75 | $175 | $400 | May be credited toward treatment |
What woodworm treatment costs by job size
In the U.S., “woodworm” commonly refers to damage from powderpost beetles or other wood-boring beetles, rather than a single pest. A professional may charge $300-$1,500 to treat a small, accessible area, such as a few floor joists or a limited section of trim. Treating several rooms or a larger framing area often costs $1,000-$2,500.
Broad infestations can require tent fumigation or another whole-structure method, often priced at $1,500-$8,000 or more. That range reflects house size, preparation, treatment method, and local contractor rates. A typical mid-sized project with a confirmed, accessible infestation often budgets around $900-$2,500 before substantial carpentry repairs.
Assumptions: U.S. contractor pricing, confirmed active beetle activity, ordinary access, and no major structural reconstruction.
How inspection, treatment, and repairs appear on quotes
Written estimates should separate the pest work from repairs. Some contractors include inspection in the treatment price; others charge a diagnostic fee. Ask whether the quote covers only visible affected areas or the full suspected infestation, and whether follow-up inspection is included.
| Quote item | Typical price | Pricing basis | What changes it |
|---|---|---|---|
| Inspection and identification | $75-$400 | Per visit | Lab identification or multiple areas |
| Localized borate or surface treatment | $3-$8 per sq ft | Treated wood surface | Access and coating preparation |
| Injection or deep-wood treatment | $5-$15 per sq ft | Targeted area | Wood thickness and drilling needs |
| Fumigation or whole-structure service | $1,500-$8,000+ | Per structure | Building size and method |
| Carpentry replacement | $8-$25 per linear ft | Installed lumber | Structural access and finish work |
Confirm which treatment method and wood surfaces are included before comparing totals. Per-square-foot treatment rates may apply to accessible wood rather than the home’s entire floor area.
Why beetle species and wood depth change the price
Powderpost beetles, deathwatch beetles, and other wood-boring insects differ in the woods they attack and the treatment needed. A pest professional may need to identify the insect and determine whether new powder or exit holes indicate active activity. Old damage alone does not always justify treating the entire structure.
Surface-applied products may work for exposed, reachable wood, but treatment can be harder when beetles are deep inside thick framing or finished walls. Affected areas larger than roughly 500-1,000 sq ft, several floors, or multiple structural members can move a job from spot treatment toward broader treatment or opening walls.
Species confirmation and the amount of accessible, infested wood are major quote drivers. If a quote recommends whole-home fumigation for a few isolated holes, ask for the evidence of activity and an explanation of why localized treatment is unsuitable.
How treatment hours and crew access affect labor charges
Localized work may take 2-6 labor hours, while a multi-room project can require a crew for 1-2 days. Labor rates vary, but pest-control and carpentry work commonly falls around $75-$150 per hour per worker before project minimums, travel, or specialty equipment. Fumigation also involves preparation, evacuation, and re-entry timing that is not measured only by treatment hours.
For example, 8-16 labor hours at $75-$150 per hour represents $600-$2,400 in labor before materials and other charges. Low-clearance crawlspaces, attic access, insulation removal, and occupied-home logistics can add time.
What removal, tenting, and moisture repairs can add
Removing damaged lumber may cost $500-$2,000 for limited, accessible repairs, but replacing load-bearing framing or finished floors can exceed $10,000. The quote may also include disposal, patching, painting, insulation replacement, or temporary protection of belongings. These are separate costs from insect treatment.
Fumigation can require residents and pets to leave temporarily and may involve food and plant preparation. Ask whether the price includes tenting, gas monitoring, re-entry clearance, and preparation instructions. Moisture correction may be necessary when damp conditions support wood decay or recurring beetle activity, but that work is generally a separate contractor expense.
Check for repair, disposal, and re-entry charges instead of assuming they are included in the treatment fee.
How Northeast and West Coast quotes compare
Prices can vary with labor, travel, building type, and local contractor availability. As a planning estimate, dense Northeast and West Coast metro areas may run 10%-25% above national midrange pricing. Smaller markets may be 5%-15% lower for straightforward jobs, although travel charges can erase the difference in rural areas.
For a localized project that might cost $900-$1,500 in a lower-cost market, a comparable metro quote could be about $1,000-$1,875. These are budgeting comparisons, not fixed regional tariffs. Historic homes, multi-unit buildings, and difficult access can cost more regardless of location.
Compare quotes for the same treated area and treatment method, not just the same headline total.
When replacement is cheaper than repeated treatment
For a small, isolated piece of badly damaged trim or furniture, removal and replacement may cost less than repeated treatment. Replacing a few boards can run $200-$800 when access and finishing are simple. Structural members require professional assessment; covering or cutting them without confirming their role can create safety problems.
For active insects across a large area, replacement alone may not address beetles remaining in nearby wood. A professional can compare targeted treatment, selective removal, and whole-structure work based on infestation evidence and repair scope. Use replacement as a price comparison only after confirming how much wood is affected and whether it is load-bearing.
How to lower a woodworm treatment estimate
Request at least two or three written estimates that identify the insect, active areas, treatment product or method, warranty terms, and follow-up plan. Provide clear access to attics, crawlspaces, and affected rooms before the inspection. This can reduce labor spent moving stored items or opening avoidable access points.
Ask whether a localized treatment is appropriate when activity is limited, and separate pest treatment from optional cosmetic repairs. Avoid paying for broad treatment based only on old holes without evidence of active infestation. The most reliable savings come from controlling the treatment scope while keeping necessary structural repairs and follow-up in the budget.