The short version
Most termite problems in North Charleston are eastern subterranean termites, and the usual fix is a liquid soil treatment or bait stations. Start with an inspection; $75–$250 is typical.
- Look for mud tubes, shed wings and hollow-sounding wood.
- Swarms usually show up from March through May.
- The usual fix is a soil barrier or bait stations.
- An inspection typically costs $75–$250.
- Insurance usually doesn’t cover termite damage.
Homeowners, landlords and anyone buying or selling a house in North Charleston, whether you've spotted something or just want to know what to watch for.
What to look for
Termites work quietly. A colony can feed inside a wall for years. Average winter lows near 38°F slow termites near the surface around North Charleston, but they move deeper and keep feeding under heated homes. Spongy floors or bubbling paint usually mean long-running damage. So it's worth an inspection, even for one or two signs.
- 1Winged swarmers indoors, especially in spring.
- 2Doors and windows that suddenly stick.
- 3Wood that sounds hollow when tapped.
- 4Mud in cracks of subfloor or joists.
- 5Screwdriver sinks easily into sills or trim.
- 6Mud tubes running up foundation walls or piers.
Why it’s worth acting soon
- Colonies grow and spread every year they go untreated.
- Damage hides behind drywall, flooring and trim.
- Homeowners insurance usually doesn’t cover termite damage.
- An active infestation can complicate a home sale.
- Formosan colonies are large and can do serious damage quickly.
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Termite activity through the year in North Charleston
Spring
swarm season. In North Charleston, expect it from March through May. Check windowsills and light fixtures for wings.
Summer
with highs around 92°F in North Charleston, termites follow moisture, so watch AC drain lines, sprinkler zones and hose bibs.
Fall
with about 50 inches of rain a year in North Charleston, make sure gutters and downspouts carry water well away from the foundation.
Winter
a good time to book an inspection in North Charleston, before swarm season starts.
Treatment options and typical costs
Termite Inspection and WDI Report
$75–$250
The inspector checks the foundation, garage, attic and damp spots. Bring up anything you’ve noticed.
- Time
- 60–120 minutes
- Best for
- Every job, real estate closings, and yearly peace of mind
Bait Station System with Monitoring
$1,500–$3,500 install, plus $300–$500 per year
Bait systems around North Charleston homes need ongoing monitoring to keep working. Skip the yearly service and the stations go unchecked.
- Time
- 2–4 hours to install; checked quarterly
- Best for
- Colony elimination, wells and slabs, homes near water
Annual Renewal and Monitoring
$150–$400 per year
Termites do not stop foraging after a treatment, so monitoring matters. Yearly visits to a North Charleston home catch new tubes before they reach framing.
- Time
- 30–60 minutes per visit
- Best for
- Keeping a treated home protected after the initial job
Localized Wood, Foam, and Borate Treatment
$250–$1,500
Borate is brushed or sprayed onto bare wood in crawl spaces. Termites that eat treated wood around a North Charleston home die, and the protection lasts as long as the wood stays dry.
- Time
- 1–3 hours
- Best for
- Small drywood spots, wall voids, and exposed framing
Prices are typical published ranges. Ask what’s included before you compare quotes.
A slow leak under a sink keeps the wood damp, and damp wood is exactly what termites are looking for.How treatment works on a typical North Charleston home.
The stations are checked on a schedule, often every few months. Termites carry the bait back to the colony. They're spaced every 10 to 20 feet. Bait stations are the other main option. Fix any moisture under the house too. They also treat around piers and plumbing. With a crawl space, the crew treats soil outside and underneath.
Which termites live around North Charleston.
The termite you're most likely to meet in North Charleston is the eastern subterranean termite. It nests in soil and builds mud tubes to reach wood. It needs steady moisture. Formosan termites have spread into parts of South Carolina too. Their colonies dwarf native ones. Inspectors take them seriously.
Subterranean termites don't stop in winter; they just go deeper. A quiet season is a good time for a non-urgent inspection.When termites swarm here.
Swarm season is when termites show themselves. In North Charleston, eastern subterranean termites usually swarm from March through May, typically on a warm, sunny day after rain. Formosan termites in South Carolina swarm later, from late April into June. Look for them on warm, humid evenings around porch lights. A swarm outside means a colony is nearby. A swarm inside usually means it's in the house. Save a few in a bag, or snap a clear photo.
Where to look around your house.
A lot of houses around North Charleston are built over crawl spaces, and that's usually where termites start. Take a flashlight underneath. Check the piers, the sill plate and the floor joists. Standing water or a musty smell needs fixing either way. The same advice applies across the area, from North Charleston out to Charleston and Goose Creek.
A year of termites in North Charleston.
- Winter: a good time to book an inspection in North Charleston, before swarm season starts. - Fall: with about 50 inches of rain a year in North Charleston, make sure gutters and downspouts carry water well away from the foundation. - Summer: with highs around 92°F in North Charleston, termites follow moisture, so watch AC drain lines, sprinkler zones and hose bibs. - Spring: swarm season. In North Charleston, expect it from March through May. Check windowsills and light fixtures for wings.
What happens at an inspection.
Photos help. Afterward, ask them to show you what they found. A moisture meter and a probe help them find hidden activity. They'll also go into the crawl space. Inside, they check the garage, baseboards, plumbing gaps and the attic. They check the foundation, the soil line and nearby wood. The inspector walks the outside of the house first. Most inspections take an hour or two.
Termites or ants?
- Wings: termite wings are all the same length. Ant wings aren’t. - Waist: termites are thick through the middle. Ants are pinched. - Antennae: termite antennae are straight. Ant antennae bend like an elbow. - Debris: termites leave mud. Carpenter ants leave sawdust. - Tunnels: termite galleries are packed with mud. Ant tunnels are clean and smooth.
Getting ready for treatment day.
Any drill holes in a slab or patio get patched. Ask how long to stay off treated soil. Keep pets and kids inside while the crew works outside. Mark sprinkler heads and any buried lines. Move stored boxes away from garage walls. Clear a path along the outside walls. Soil treatments and bait stations need little prep.
Mulch and termites.
Wood chips right against siding hold moisture termites like. A dry strip along the house lets you spot mud tubes. Keep mulch thin and pull it back from the foundation.
Questions to ask before you sign.
- Which termites did you find, and where? - What product or system will you use? - Is the whole foundation treated, or just one spot? - What does the warranty cover, and for how long? - What does the yearly renewal cost? - What do I need to do before and after treatment?
What affects the price
- Linear feet of foundation to be treated.
- Cubic footage under the tent for fumigation.
- Extent of existing damage needing repair.
- Annual renewal and monitoring fees.
- Slab, crawl space, or basement construction.
- Amount of drilling through concrete and patios.
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What's your biggest concern about termites?
When to call for help
Lenders often ask for one. It's also the cheapest termite service. Carpenter ants leave clean tunnels and sawdust. Termites leave mud. Call if you see mud tubes, pellets or an indoor swarm. Hollow-sounding wood is another clue. Buying or selling? Get a wood-destroying insect (WDI) report either way.
What you can do yourself
Some of the work is yours. Pull mulch back from the foundation. Fix leaks and clear gutters. Keep firewood away from the house. Treating an active colony is harder. The product has to reach the whole colony. It also needs even coverage around the entire foundation. Store-bought sprays usually kill only the termites you see.
Termites in North Charleston
A local provider who knows North Charleston and South Carolina can point out the specific conditions that matter most here before you commit to a plan. In North Charleston, take a minute to note where you have seen activity and when it appears, so the inspection is faster and the quote more accurate. In North Charleston, most of the housing is urban, so the usual entry points, moisture spots, and sheltered areas near the structure are what an inspection checks first. North Charleston has a humid subtropical climate, and termites activity here tends to pick up spring swarm season (March-May), warmer earlier in the south. A typical home in North Charleston is worth around $265k, which puts a few hundred dollars for an inspection and prevention in perspective. With summer highs around 92°F, North Charleston's humid subtropical climate decides when local termites are busiest. An annual inspection is common sense here. South Carolina is one of the most termite-active states in the country. North Charleston gets about 50 inches of rain a year, and average humidity sits near 72%, so the soil around foundations rarely dries out.
Local research
Termites in North Charleston, SC: what the public record shows
Before you compare quotes, it helps to know which termites actually live in South Carolina, when they are busiest around North Charleston, and what the state figures look like. Everything below links to the agency or university page it came from.
Termite species recorded in South Carolina
Four drywood and four subterranean species mean coastal SC homes can face both soil-borne and wood-borne infestations.
Clemson Home & Garden Information CenterTermite species recorded in South Carolina
- Eastern subterranean termite (Reticulitermes flavipes) — UGA calls it 'the most widely distributed subterranean termite, and it is the most common termite found in the eastern United States'; it swarms February through April in Georgi…
- Formosan subterranean termite (Coptotermes formosanus) — FDACS lists it in Florida, Alabama, Georgia, Louisiana, Mississippi, South Carolina, North Carolina, Tennessee, Virginia, Texas, Arizona, California and Hawaii. Colonies contain…
- West Indian drywood termite (Cryptotermes brevis) — UF/IFAS lists it among the major structural pest species accounting for roughly 65% of Florida termite reports. Clemson records the 'powderpost' drywood termite in seven South C…
- Western drywood termite (Incisitermes minor) — UC IPM: 'California's second most important termite pest', 'commonly found along the Pacific coastal region extending into the Central Valley and deserts of Southern California'…
When termites are busiest around North Charleston
Native subterranean species swarm in early spring, often in the afternoon; Formosan swarms mid-May to July, often in the evening, attracted to lights (Clemson).
Clemson: Formosan termites established in Aiken, Bamberg, Beaufort, Berkeley, Charleston, Colleton, Dorchester, Georgetown, Horry, Jasper, Lexington, Orangeburg, Pickens, Richland, Sumter, and York counties; Formosan colonies 'may have a million or more' workers vs. about 100,000 for natives. Eastern drywood termites found in six coastal counties; powderpost (West Indian) drywood termite in seven counties.
Sources: Clemson Home & Garden Information Center; Biology of Subterranean Termites in the Eastern United States (B1209); University of Missouri Extension; Formosan Termite Program; Termite Species Distribution in Florida and UF Termite Identification Services (IN1360); Drywood Termites (Pest Notes). Figures are quoted as the source prints them. How we check our sources
Simple ways to keep termites away
- Keep six inches between soil and siding or wood.
- Ventilate crawl spaces and control humidity.
- Set deck and porch posts on concrete, not soil.
- Seal cracks in the foundation and slab.
- Store firewood well away from the house, off the ground.
- Never leave form boards or scrap lumber in the soil.
A damp cabinet under a leaky sink is worth reporting to your landlord early. Fixing the leak removes what draws termites in.Did you know?
In North Charleston, termites have been chewing wood for well over 100 million years, since the age of the dinosaurs.
In North Charleston, some tropical termites grow fungus gardens inside the nest and eat the harvest.
Questions people ask
Can I treat termites myself?
Store-bought sprays usually kill only what you see. It also needs even coverage around the foundation. The product must reach the whole colony. An active colony is harder. Prevention, yes.
What is the difference between subterranean and drywood termites?
Around North Charleston, the subterranean kind causes most problems. Drywood termites live inside the wood and leave tiny pellets. Subterranean termites live in soil and build mud tubes.
Does fumigation kill subterranean termites too?
It doesn't reach a colony living in the soil. Tenting clears termites inside the house. Not reliably.
Will termites come back after treatment?
That's what yearly inspections and renewal plans are for. Treatments wear down and new colonies move in. They can.
Are mud tubes always a sign of active termites?
If it's rebuilt, they're active. Break off a piece and check back in a week. Old tubes can stay on a wall for years. Not always.
What are the signs of termites that homeowners miss?
In North Charleston, termites are best caught early through inspection, because the damage is hidden inside wood until it is far along. In North Charleston, a professional inspection looks for mud tubes, damaged wood, and swarming activity, and treatment targets the soil and the colony rather than just the visible wood.
Are termites common in South Carolina?
Around North Charleston, the usual culprit is the eastern subterranean termite.
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Sources (11)
The facts in this article come from the public sources listed above. Every home is different, so ask the company you talk to about pricing and what’s included. Published by Termite Exterminator · Updated September 11, 2026 · How we write these guides