The short answer
Most homes in the Carolinas and Virginia pay $500 to $2,500 to start termite protection, then a yearly renewal. A liquid barrier usually costs less up front and renews for roughly $85 to $200 a year, according to NC State Extension. A bait system such as Sentricon usually costs more to install, and its renewals run 2 to 4 times what a liquid renewal costs, because someone has to come back and check the stations. Over ten years, the yearly fee matters more than the install price.
Note on pricing: the figures below are market estimates and real prices homeowners have reported. They are not a quote from Vinx. We price termite protection after a free inspection, because the foundation length and construction type drive the cost.
Termite Treatment Cost at a Glance
Termite work is priced by the linear feet around your foundation, not by square footage. A 2,000 sq ft one-story house has roughly 180 to 200 feet of foundation, so the per-foot price is the number to compare between quotes.
| Treatment | Up-front cost | Yearly cost after | What it does |
|---|---|---|---|
| Liquid barrier (trench and rod) | $3 to $20 per linear foot; often $500 to $2,000+ | About $85 to $200 renewal (NC State) | Puts a termiticide in the soil all the way around the house. Lasts 5 to 10 years when applied properly. |
| Bait stations (Sentricon, Trelona, Advance) | $7 to $12 per linear foot; often $1,000 to $2,500 | About $200 to $400 monitoring; 2x to 4x a liquid renewal (NC State) | Stations in the soil around the house. Termites carry slow-acting bait back to the colony. |
| Spot treatment | Varies with the area | Often none | Treats one area only. NC State warns it "may not correct the problem" and often carries little or no guarantee. |
| Tent fumigation | $1 to $4 per sq ft; $2,000 to $8,000 | None | For drywood termites, which are uncommon in most of our area. Leaves nothing behind to stop future termites. |
| Inspection | $0 to $250 | Included in most renewals | Finds activity and conditions that invite termites. |
Per-foot and project ranges are HomeGuide's 2025 member-reported costs. Renewal figures come from NC State Extension. A house with a basement or a crawl space costs more to treat with liquid than a slab house of the same size; NC State says a basement can cost as much as 4 times more.
What Homeowners Here Actually Paid
National averages hide a lot. These are prices homeowners in our service area wrote into public Google reviews of local pest companies, plus a few from homeowner forums and YouTube comments. Company names are left out on purpose. They are individual reports, not quotes, but they show where real bills land.
| Area | What was paid or quoted |
|---|---|
| Columbia, SC | Quotes from $300 to $1,500 for the first year, then $200 to $500 a year, for a one-story home of about 1,500 sq ft. The homeowner chose $500 up front and $250 a year. |
| Columbia, SC | $250 to move an existing termite plan into a new owner's name, on top of at least $100 for the termite letter at closing. Starting a brand-new plan with a different company was quoted at $750 to $1,000. |
| Greenville, SC | Bait system quoted at $517 to install plus $27 a month ($324 a year). The install fee was waived for switching an existing plan, but then came $125 for an extra station and $370 for the new plan. |
| Greenville, SC | After the company was sold, the bait station inspection went from $85 to $103.40, a 22% increase. A builder-paid first year turned into $150 a year, then $170. |
| Greenville, SC | About $1,500 for treatment plus $20 a month. Per the reviewer, the fine print covered neither termites coming back nor future damage. |
| Raleigh, NC | A bait system for $1,700+, with the homeowner noting they did not own the stations. Another paid $300 a year for station checks even though no bait was replaced. |
| Virginia Beach, VA | A $340 termite contract renewal, and an $80 increase on a yearly Sentricon renewal for a once-a-year service. |
| Charleston, SC | On a local Reddit thread, one homeowner reported paying about $400 a year to keep a plan that came with the house, and a North Charleston homeowner was quoted $1,350 for the first year with no termites present. |
Two patterns stand out. First-year quotes for similar houses can differ by three times or more, so getting two or three inspections pays off. And the complaints are rarely about the first bill. They are about the renewal going up, or about a yearly fee that seems to buy very little.
Liquid Termite Treatment: What You Are Paying For
A liquid treatment puts a non-repellent termiticide such as fipronil (Termidor) or chlorantraniliprole (Altriset) into the soil all the way around and under the house. Termites tunnel through it, pick it up and share it, and the treated soil keeps working for years. The cost is mostly labor and product, and the product volume is bigger than most people expect.
NC State Extension gives the label rate as 4 gallons of mixed termiticide per 10 linear feet, per foot of depth. Their worked example: a house with 120 feet of foundation and a one-foot footer needs 48 gallons for the outside soil alone, and the whole job "could easily exceed 100 gallons" once the inside of a crawl space and any slabs are treated.
- Trenching. A narrow trench is dug along the outside of the foundation and the termiticide is mixed into the soil as it goes back in.
- Rodding. Where the footer is deep, a rod injects termiticide down to it.
- Drilling. Porches, patios, driveways and garage slabs that touch the house are drilled and injected, because termites can travel under concrete. Clemson Extension says this drilling is part of making the barrier continuous.
- Crawl space work. The soil along the inside of the foundation walls and around piers gets treated too. If your crawl space is encapsulated, ask how this will be done first; our crawl space encapsulation guide explains why.
How long does it last? NC State says EPA requires liquid termiticides to stay effective for at least 5 years, and modern products applied properly typically last 5 to 10 years. That is why a liquid plan's renewal is mostly an annual inspection with retreatment included if termites return. NC State also notes that treating every year is illegal under most termiticide labels unless termites are actually found, so a plan that sprays the house annually "just in case" is a red flag.
Bait Stations: What the Yearly Fee Actually Buys
Bait systems work differently. Stations go into the soil around the house, and each holds a cellulose bait laced with a slow insect growth regulator: noviflumuron in Sentricon, novaluron in Trelona, diflubenzuron in Exterra. Worker termites feed on it and share it, and termites die when they try to molt. NC State says there is "no way to predict how soon termites will find" a station, and that it "may take several months" to knock a colony down.
Because the bait does not leave a chemical in the soil, the protection only lasts as long as the stations are serviced. That is what the yearly fee pays for, and it explains three things homeowners often complain about.
- "The tech didn't replace the bait." That can be correct. The Recruit HD label for Sentricon says stations are inspected "on at least an annual basis," and bait is replaced when it is more than 1/3 eaten. If termites have not been feeding, the bait stays. A YouTube commenter with a 10-year-old system noticed exactly this: the bait used to be swapped every year, and now it only changes when there is activity.
- "I don't own the stations." Usually true. NC State notes that when a bait contract ends, the company usually removes the stations or stops servicing them, which leaves the house with no chemical protection. Ask about this before you sign, not when you want to switch.
- "$300 a year to open a few caps." The visit is short, but the fee also carries the retreatment promise and, on some plans, damage repair. If your plan is retreatment-only, the fee buys less, which is worth knowing when you compare quotes.
NC State is blunt about the trade-off: bait systems can cost more to install than a liquid treatment, renewals are "likely to cost 2x-4x more," and baiting "requires a long-term commitment on your part."
Liquid or Bait: Which One Fits Your House?
| Your situation | Usually the better fit | Why |
|---|---|---|
| Termites are active in the house now | Liquid, or liquid plus bait | A liquid barrier stops activity sooner. NC State notes some companies treat with liquid first to stop current activity, then add bait. |
| Well, cistern, pond or creek near the foundation | Bait | Soil treatment can be restricted or illegal near water. Baits put no chemical into the soil. |
| Lots of patios, porches and driveways against the house | Often bait | Avoids drilling through concrete. Ask for both quotes, because drilling is where liquid jobs get expensive. |
| Lowest cost over 10 years | Usually liquid | Lower renewals, and the treated soil keeps working between visits. |
| Prevention only, no termites found | Either | Compare the yearly fee, what the plan covers, and who owns the stations. |
On the coast, Formosan subterranean termites are part of the decision. They are established in parts of the Lowcountry and form large colonies. South Carolina rules require a termite contract to state whether Formosan termites are covered and whether that coverage includes repairs, so read that line in any Charleston, Mount Pleasant or Moncks Corner quote.
The 10-Year Math
Because the renewal repeats every year, it decides which option is cheaper. Here is an illustration using mid-range figures from the sources above. Your real numbers depend on your quotes.
| Liquid barrier | Bait system | |
|---|---|---|
| Up front | $1,200 | $1,500 |
| Renewal, years 2 to 10 | 9 x $150 = $1,350 | 9 x $350 = $3,150 |
| 10-year total | $2,550 | $4,650 |
The gap shrinks if the liquid plan needs a re-treatment partway through. NC State says some companies require a "booster" treatment of $600 to $1,200 after several years, or raise the annual fee by 25% to 50% instead. Ask whether a booster is part of the plan before you compare totals.
Why Termite Renewals Go Up
Rising renewals were the most common money complaint we found. A Greenville homeowner's bait inspection fee rose 22% after the company changed hands. A Virginia Beach homeowner saw $80 added to a once-a-year Sentricon visit. Outside our area, an Alabama TV station reported a renewal that jumped from $330 to $1,499. A few things drive it:
- Retreatment-only vs. repair coverage. NC State's guide to service agreements describes both. Plans that pay for repairs cost more, and some companies only offer them on houses that meet certain conditions.
- Boosters and re-treatments as liquid treatments age.
- Construction type. Slabs and finished basements hide more of the structure, so renewals for them can cost more.
- Company sales. Several reviews describe prices rising and visits dropping after a local company was bought.
Read the renewal terms before you sign: whether the company can raise the price, how much notice you get, and whether you can switch companies without losing coverage. Our guide to termite bonds and what they cover goes deeper on the contract side.
Buying a House That Already Has a Termite Plan
An existing plan can save you the start-up cost, but transferring it is rarely free. Homeowners in the reviews described a $250 transfer fee, a separate charge of $100 or more for the termite letter at closing, and in one case having to pay the previous owner's unpaid bill to keep the plan alive. Starting fresh with a different company was quoted at $750 to $1,000. Ask the seller for the contract, the last inspection report, and whether it covers repairs or only retreatment, before closing.
Is Termite Treatment Worth the Cost?
For most homes in our area, yes, because the alternative is paying for damage yourself. The Insurance Information Institute says standard homeowners policies do not cover infestation from termites. The repair bills in local reviews make the point: one Charleston family reported paying $6,000 for repairs, and another family needed $30,000 of work before an estate home could sell. In both cases the homeowner had a termite plan and disputed whether it covered the damage, which is another reason to know exactly what you are buying.
NC State's own framing is fair: protection is your decision, but "don't let economics be your only determining point." If you are not sure whether you need it, start with an inspection. Our guide on how often to get a termite inspection and the six signs of termite activity will help you decide.
Questions to Ask Before You Sign
- Is this liquid, bait, or both, and why for my house?
- What is the price per linear foot, and how many feet did you measure?
- What will the renewal cost in year two, and can it go up?
- Does the plan cover retreatment only, or repairs too? Is existing damage excluded?
- Are Formosan termites covered? (In South Carolina, the contract has to say.)
- For bait: who owns the stations, how often are they checked, and what happens if I cancel?
- For liquid: will a booster treatment be required later, and what does it cost?
- Can the plan transfer if I sell the house, and is there a fee?
Clemson Extension recommends getting bids from two or three licensed companies and being wary of prices that seem "out of line," especially ones that are too low.
Key Takeaways
- Expect roughly $500 to $2,500 to start, priced by the linear feet around your foundation.
- Liquid usually costs less over 10 years. Bait renewals run 2 to 4 times a liquid renewal.
- Bait only protects while it is serviced. Ask who owns the stations and what happens if you cancel.
- A tech not replacing bait at an annual check can be correct: Sentricon bait is replaced when more than a third is eaten.
- Read the renewal, repair and Formosan terms. That is where most disputes start.
Frequently Asked Questions
Most homes pay about $500 to $2,500 to start protection, depending on the foundation length, the construction type and the method. HomeGuide's member-reported costs put liquid treatment at $3 to $20 per linear foot and bait systems at $7 to $12 per linear foot. After that, expect a yearly renewal.
A 2,000 sq ft one-story house has roughly 180 to 200 feet of foundation. At HomeGuide's ranges, that works out to about $540 to $4,000 for liquid, and about $1,260 to $2,400 for bait stations. Crawl spaces, basements and lots of attached concrete push the price up.
Usually, over time. NC State Extension says a bait system can cost more to install, and its renewals are likely to cost 2 to 4 times a liquid renewal, because the stations need regular checks. Liquid renewals typically run $85 to $200 a year.
EPA requires liquid termiticides to stay effective for at least 5 years, and NC State says modern products applied properly typically last 5 to 10 years. That is not a guarantee, which is why an annual inspection is still worth keeping.
Because it may not have needed it. The Recruit HD label says stations are inspected and serviced at least once a year, and bait is replaced when more than a third of it has been eaten. If termites have not been feeding, the bait stays in place.
NC State Extension says the company usually removes the stations or simply stops servicing them, which leaves the house with little or no chemical protection. Most homeowners do not own the system, so ask about this before signing.
No. The Insurance Information Institute says homeowners policies do not cover infestation from termites or other pests. A termite plan that includes repair coverage is the closest thing to insurance for it.
HomeGuide puts inspections at $0 to $250, and many companies inspect free when it is not tied to a home sale. Vinx inspects free before quoting. Real estate inspections that come with a written report usually carry a fee.
NC State Extension does not recommend DIY chemical termite control. Store products can kill termites you see, but they will not reliably stop an active infestation, and a proper barrier means trenching, rodding and drilling slabs with up to 100+ gallons of mix.
Sources: NC State Extension, Termites: Biology and Control and Termites: Baiting Systems; Clemson Cooperative Extension, Subterranean Termite Control (HGIC 2447); Recruit HD termite bait label (Dow AgroSciences, EPA-accepted 2011); HomeGuide termite treatment cost guide; Insurance Information Institute; S.C. Code Regs. 27-1085. Homeowner prices are paraphrased from public Google reviews, forums and YouTube comments.
Photo credits: USGS Native Bee Inventory and Monitoring Lab, Public domain.