Termite fumigation typically costs between $1,000 and $8,000 for most homes, with larger or multi-story structures pushing into the $12,000+ range. The wide spread in pricing comes down to your home’s size, the severity of the infestation, and where you live. Understanding how companies calculate their quotes helps you spot a fair price and avoid overpaying.
Cost by Home Size
Home size is the single biggest factor in your fumigation bill, but it’s not measured the way you might expect. While most pest treatments are priced by square footage or the linear footage of your foundation, fumigation is priced by cubic footage. The tenting crew has to seal your entire structure and fill it with gas at a concentration high enough to kill termites in every wall void, attic space, and rafter. A two-story home with the same footprint as a single-story ranch costs significantly more because there’s roughly twice the volume to fill.
Here’s what to expect based on floor area alone:
- 1,000 square feet: $1,000 to $4,000
- 2,000 square feet: $2,000 to $8,000
- 3,000+ square feet: $3,000 to $12,000+
Those ranges are broad because square footage is only a starting point. A 2,000-square-foot single-story home with standard 8-foot ceilings will come in at the lower end. The same footprint with vaulted ceilings, a tall attic, or a second story will land much higher. When you get a quote, ask if the company is calculating based on cubic footage. If they’re estimating off square footage alone, the final bill could shift once they measure the structure.
What Drives the Price Up or Down
Beyond volume, several factors influence where your quote falls within those ranges.
Roof complexity and building shape. Fumigation requires wrapping the entire structure in tarps, then clamping and sealing every seam. A simple rectangular home with a basic gable roof is faster and cheaper to tent than one with multiple dormers, complex rooflines, or attached structures like covered patios. Crews need more material and more labor time when the building shape is irregular.
Severity of infestation. A worse infestation doesn’t always change the gas concentration (the structure needs to reach lethal levels regardless), but it can extend the time the home stays tented. Most fumigations take 24 to 72 hours under the tarps. If the pest company determines your infestation is deep in structural timbers or spread across the entire home, they may keep the tent sealed longer, which adds to labor and monitoring costs.
Geographic location. Fumigation costs vary by region. Areas with high drywood termite pressure, like Southern California, Florida, and the Gulf Coast, tend to have more competition among providers, which can moderate pricing. But these areas also see higher demand, and local regulations around fumigation gas handling can increase the cost of compliance for pest companies.
Accessibility. Homes built close to property lines, near busy roads, or with dense landscaping around the foundation are harder to tent. If the crew needs extra time or equipment to work around obstacles, that adds to the bill.
What Fumigation Includes
A standard fumigation quote should cover the full process: initial inspection, preparation guidance, tenting, gas introduction, monitoring, aeration, and a clearance reading before you’re allowed back inside. Some companies include a post-treatment inspection a few weeks later; others charge separately for follow-up visits.
What fumigation does not include is repairing the damage termites already caused. The gas kills active colonies but does nothing to restore weakened wood, damaged drywall, or compromised framing. If your home has structural damage, you’ll need a separate contractor for repairs, and those costs can rival or exceed the fumigation itself depending on severity.
You should also budget for the cost of leaving your home during treatment. Most fumigations require 2 to 3 days away, and you’ll need to remove or double-bag all food, medications, and plants. If you have pets, they’ll need to be out for the duration as well. Hotel stays, eating out, and pet boarding are out-of-pocket expenses that homeowners often forget to factor in when comparing quotes.
Fumigation vs. Other Treatment Options
Fumigation is the most expensive termite treatment, but it’s also the only one that reaches every part of the structure simultaneously. It’s primarily used for drywood termites, which live inside wood rather than traveling from soil colonies. If you have subterranean termites (the more common type in most of the U.S.), fumigation is rarely recommended. Soil treatments and bait station programs handle subterranean infestations at a fraction of the cost.
For localized drywood infestations caught early, spot treatments using heat, microwave, or localized chemical injection can run $200 to $1,000 per area. The tradeoff is that spot treatments only work where the pest company can confirm the infestation’s boundaries. If termites have spread to multiple areas or into parts of the structure that can’t be easily accessed, fumigation becomes the more reliable choice because the gas penetrates everywhere.
Bait station systems, which involve installing monitoring stations around the foundation perimeter, are designed for subterranean species and cost $1,500 to $3,000 for installation with ongoing monitoring fees. They work slowly, sometimes taking months to eliminate a colony, but they provide continuous protection as long as the stations are maintained.
Inspection Costs and Ongoing Protection
Many pest companies offer a free initial inspection, especially if they expect the inspection to lead to a treatment contract. Independent inspections from companies that don’t sell treatment services typically run $75 to $150. If you’re buying or selling a home, a termite inspection (sometimes called a Wood Destroying Organism report) is often required by the lender and costs $100 to $200.
After fumigation, most companies offer an annual termite warranty or bond. This typically costs around $100 per year and includes an annual inspection. If termites return while the bond is active, retreatment is covered at no additional cost. Whether the warranty is worth renewing depends on your risk level. Homes in high-termite areas, older homes with wood framing, and properties with previous infestations benefit most from ongoing coverage. The $100 annual fee is relatively small insurance against a treatment that could cost thousands if you need it again.
Getting an Accurate Quote
The best way to avoid surprises is to get at least three quotes from licensed pest control companies. Make sure each company is quoting the same type of treatment and ask specifically whether the price is based on cubic footage measurements or an estimate. A reputable company will want to physically inspect the property before giving a firm number, not quote over the phone based on square footage alone.
Ask each company what’s included: Does the quote cover the clearance test? Is there a warranty period after treatment, and how long does it last? Will they provide the preparation checklist in writing? Some companies offer package pricing that bundles fumigation with a one- or two-year warranty, which can be a better value than paying for each separately.
If a quote comes in far below the others, treat it as a red flag rather than a bargain. Fumigation requires significant materials, specialized equipment, and licensed technicians. A lowball price often means corners are being cut on gas concentration, tenting quality, or monitoring time, all of which directly affect whether the treatment actually works.