Using the calculator
How to use the termite treatment cost calculator.
Use this calculator as a planning tool before you talk to a contractor. It gives a low, typical, and high range so you can compare quotes against a visible set of assumptions instead of relying on one national average.
Start with the inputs you know.
- Enter your repair details. Select the repair type, scope, and any variables that match your situation. The more accurate the inputs, the closer the range will be to a real contractor quote.
- Adjust for severity and access. The calculator adjusts the base cost for condition severity and site access. If you are not sure, leave the defaults — they reflect the most common scenario.
- Review low, typical, and high. The output gives three numbers. Low reflects minimal scope. Typical reflects the most common project. High reflects complex conditions or larger access requirements.
- Bring the range to your contractor conversations. If a quote lands above the high or well below the low, ask the contractor to walk through their scope assumptions. A well-scoped quote rarely falls outside the range.
What changes the price.
The largest price swings usually come from repair method, measured severity, access, and what the quote excludes. For termite treatment, these are the main factors to review:
- Termite species: subterranean treatment runs $250 to $2,000, drywood $225 to $2,500 or more
- Treatment method: liquid barrier, bait system, spot treatment, or whole-house fumigation
- Home perimeter footage for liquid and bait treatments, square footage for fumigation
- Infestation extent: localized activity versus colonies established through the structure
- Ongoing protection: annual plans, bonds, and bait service after the initial treatment
How to read the estimate range.
The low range, around $275, reflects minimal scope and favorable site conditions. The typical range, around $750, is the most useful comparison point for an average project. The high range, around $8,000 or more, is where complex conditions, difficult access, or larger scope start to matter.
Most homeowners pay $275 to $1,600 for treatment, with the national average around $750. Whole-house tenting and fumigation for widespread drywood infestations runs $2,000 to $8,000.
Common project scenarios.
- Spot or localized treatment: $275 to $900. A confirmed, contained infestation treated directly. The budget path when inspection verifies the activity is genuinely localized.
- Liquid soil barrier, full perimeter: $500 to $1,500. The standard subterranean treatment: trenching and treating soil around the full foundation at $3 to $20 per linear foot.
- Bait station system: $800 to $2,000. Perimeter stations at $8 to $12 per linear foot, plus ongoing service. Less invasive and doubles as monitoring.
- Whole-house tenting and fumigation: $2,000 to $8,000. The definitive answer for widespread drywood infestations, priced at $1 to $4 per square foot with several days out of the home.
What may not be included.
- Repair of termite-damaged wood or structural members
- Moisture correction such as grading, gutters, or crawl space work
- Ongoing annual plans, bond renewals, or bait station service unless contracted
- Fumigation lodging, food handling prep, or plant and pet accommodations
- Follow-up treatments outside the warranty terms
Use the number in contractor conversations.
The estimate is a reference point, not a final answer. If a contractor quote lands far above the high range or unusually far below the low range, ask what scope assumptions explain the difference.
- Which species did you identify, and what evidence supports it?
- Which treatment method are you recommending and why is it sufficient for this extent?
- What is the per-linear-foot or per-square-foot price behind this quote?
- What does the warranty cover, for how long, and is it a retreatment or repair bond?
- What does the annual plan cost after year one, and what does it include?
Read the Termite Treatment guideSee the full cost breakdownPrepare a quote request