Six factors determine what you will pay. Home size, treatment type and severity drive the biggest swings. No national source we checked publishes a separate premium for slab or basement foundations, so the foundation section below explains the work rather than adding a figure.
Liquid and bait are priced per linear foot of foundation (HomeGuide: $3-$20/lin ft and $7-$12/lin ft), so cost follows the perimeter. Tenting and heat are priced per square foot ($1-$4/sq ft and $1-$3/sq ft), so cost follows floor area. Doubling the floor area of a square home adds about 41 percent to its perimeter.
Orkin's own spot treatment price starts at $250; HomeGuide puts tenting an average-sized home at $2,000 to $8,000. The right treatment depends on termite species and infestation extent, not budget alone.
Labor rates, termite pressure, and competition all vary by region, but no national source we checked publishes regional termite prices, so the calculator applies no regional adjustment. BLS publishes the national median wage for pest control workers: $21.75 an hour in May 2025.
This Old House: a minor infestation $250 to $1,000, a severe one needing fumigation or heat $2,000 to $8,000, and repairs can push the total well above $10,000.
Subterranean colonies live in the soil and are treated with liquid or bait. Drywood colonies live inside the wood and often need fumigation or heat. Formosan termites cause the most damage.
Slab foundations require drilling through concrete for liquid treatment. Crawlspaces allow easier access but may need vapor barriers. Basements add treatment area.
Our arithmetic on HomeGuide's per-unit rates ($3-$20/lin ft liquid, $7-$12/lin ft bait, $1-$4/sq ft tenting), with no cap. The one limit is liquid's floor: HomeGuide puts a whole-home liquid treatment at $500 to $2,000 or more, so a smaller result is raised to $500 (marked *). Perimeter is 4 x the square root of the floor area, which assumes a square footprint; real homes usually have more.
| Home Size | Liquid Barrier | Bait Stations |
|---|---|---|
| 1,000 sq ft | $500*-$2,520 | $882-$1,512 |
| 1,500 sq ft | $500*-$3,100 | $1,085-$1,860 |
| 2,000 sq ft | $537-$3,580 | $1,253-$2,148 |
| 2,500 sq ft | $600-$4,000 | $1,400-$2,400 |
| 3,000 sq ft | $657-$4,380 | $1,533-$2,628 |
| 4,000 sq ft | $759-$5,060 | $1,771-$3,036 |
Source: HomeGuide (updated 21 November 2025, checked 13 October 2026), compiled estimates; the multiplication is ours. HomeGuide's whole-job figures are shown here for reference, not used as limits, because each describes one home size or an average home: tenting $2,000 to $8,000 for an average-sized home, bait $1,000 to $2,500 on average for a whole home, and heat $2,000 to $6,000 for an average 2,000 sq ft home.
No national source we checked publishes regional termite treatment prices, so this page and the calculator give national figures only. What does change by region is which termites you are dealing with, and so which treatment fits:
| Region | Dominant species |
|---|---|
| Southeast (FL/GA/AL/SC/NC/LA/MS) | Subterranean, Formosan, Drywood (FL) |
| Southwest (TX/AZ/NM) | Subterranean, Desert |
| West Coast (CA/OR/WA) | Drywood (SoCal), Subterranean, Dampwood (PNW) |
| Midwest (OH/IL/IN/MO) | Subterranean |
| Northeast (NY/NJ/PA/CT) | Subterranean |
| Pacific (HI) | Formosan, Drywood, Subterranean |
No national source we checked publishes state-level termite prices, so the state guides below use the national figures, named and dated. What each guide adds is local: that state's species, regulator and inspection rules.
Each guide covers that state's termite species and pressure, its pest control regulator and licence check, the inspection form used at sale, and the cost bands for the main treatment methods.
| Severity | Treatment Cost |
|---|---|
| Minor | $250-$1,000 |
| Moderate | $1,000-$3,000 |
| Severe | $2,000-$8,000 |
Treatment bands: This Old House (updated 17 June 2026). Repairs: HomeAdvisor puts structural wood repair at $600 to $3,000, up to $6,000 for load-bearing beams or walls. Inspections: HomeGuide $0 to $250. All compiled estimates, checked 13 October 2026.
May require drilling through concrete to inject termiticide beneath the slab. Limited access for inspection.
Ask for drilling as a quote line
Easier access for treatment and inspection. May need a vapor barrier to control moisture that attracts termites.
Standard pricing
Additional treatment area below grade. Interior perimeter treatment may be needed alongside exterior. Good inspection access.
Ask for interior work as a quote line
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