The short version
Most termite problems in Vancouver are western 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 in spring.
- The usual fix is a soil barrier or bait stations.
- An inspection typically costs $75–$250.
- Insurance usually doesn’t cover termite damage.
Anyone in Vancouver who owns, rents out, or is buying a home and wants to know whether termites are a real concern.
What to look for
Spongy floors or bubbling paint usually mean long-running damage. So it's worth an inspection, even for one or two signs. Termites work quietly. A colony can feed inside a wall for years. Average winter lows near 34°F slow termites near the surface around Vancouver, but they move deeper and keep feeding under heated homes.
- 1Crumbling baseboards behind furniture.
- 2Blistered or bubbling paint on wood surfaces.
- 3Discarded wings caught in spider webs.
- 4Sagging or spongy floors near exterior walls.
- 5Mud tubes running up foundation walls or piers.
- 6Layered, honeycombed wood packed with soil.
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.
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Termite activity through the year in Vancouver
Spring
swarm seasons. In Vancouver, swarms often follow the first warm days and the first fall rain.
Summer
with highs around 79°F in Vancouver, termites follow moisture, so watch AC drain lines, sprinkler zones and hose bibs.
Fall
with about 42 inches of rain a year in Vancouver, make sure gutters and downspouts carry water well away from the foundation.
Winter
a good time to book an inspection in Vancouver, 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
Liquid Soil Termiticide Barrier
$1,200–$3,500 (often $3–$16 per linear foot)
A liquid barrier treatment around a Vancouver home means trenching and rodding termiticide into the soil along the foundation. Non-repellent products let termites pass through and carry the chemical home to the colony under Vancouver.
- Time
- Half a day to a full day
- Best for
- Active subterranean termites; fast knockdown around the foundation
Localized Wood, Foam, and Borate Treatment
$250–$1,500
Foam termiticide is injected into wall voids liquid cannot reach. In Vancouver this pairs well with a soil barrier around tricky slab construction.
- Time
- 1–3 hours
- Best for
- Small drywood spots, wall voids, and exposed framing
Fumigation for Drywood Termites
$1,200–$4,000 (often $1–$4 per square foot)
Tenting is mainly for drywood termites. Most homes here never need it.
- Time
- 2–3 days including tenting and aeration
- Best for
- Widespread drywood termites throughout a structure
Prices are typical published ranges. Ask what’s included before you compare quotes.
Crawl spaces are where termites usually get in. Joists, piers and the sill plate should all get a close look.How treatment works on a typical Vancouver home.
They also treat around piers and plumbing. Fix any moisture under the house too. Bait stations are the other main option. They're spaced every 10 to 20 feet. Termites carry the bait back to the colony. The stations are checked on a schedule, often every few months. With a crawl space, the crew treats soil outside and underneath.
Which termites live around Vancouver.
It nests in soil and builds mud tubes to reach wood. It needs steady moisture. The termite you're most likely to meet in Vancouver is the western subterranean termite.
A downspout that dumps water at the foundation keeps the soil wet year-round. Extend it well away from the house.When termites swarm here.
A swarm inside usually means it's in the house. Save a few in a bag, or snap a clear photo. Swarm season is when termites show themselves. In Vancouver, western subterranean termites usually swarm in spring, and again in fall after the first good rain. A swarm outside means a colony is nearby.
Where to look around your house.
A lot of houses around Vancouver 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.
A year of termites in Vancouver.
- Summer: with highs around 79°F in Vancouver, termites follow moisture, so watch AC drain lines, sprinkler zones and hose bibs. - Fall: with about 42 inches of rain a year in Vancouver, make sure gutters and downspouts carry water well away from the foundation. - Winter: a good time to book an inspection in Vancouver, before swarm season starts. - Spring and fall: swarm seasons. In Vancouver, swarms often follow the first warm days and the first fall rain.
What happens at an inspection.
They'll also go into the crawl space. A moisture meter and a probe help them find hidden activity. Afterward, ask them to show you what they found. Photos help. Most inspections take an hour or two. The inspector walks the outside of the house first. They check the foundation, the soil line and nearby wood. Inside, they check the garage, baseboards, plumbing gaps and the attic.
Termites or ants?
- 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. - Wings: termite wings are all the same length. Ant wings aren’t. - Waist: termites are thick through the middle. Ants are pinched.
Getting ready for treatment day.
Clear a path along the outside walls. Move stored boxes away from garage walls. Mark sprinkler heads and any buried lines. Keep pets and kids inside while the crew works outside. Ask how long to stay off treated soil. Any drill holes in a slab or patio get patched. Soil treatments and bait stations need little prep.
Mulch and termites.
Wood chips right against siding hold moisture termites like. Keep mulch thin and pull it back from the foundation. A dry strip along the house lets you spot mud tubes.
Questions to ask before you sign.
- 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? - Which termites did you find, and where? - What product or system will you use?
What affects the price
- Wells, drains, or water features limiting chemical use.
- Attached garages, decks, and additions.
- Whole-house fumigation versus spot treatment.
- Cubic footage under the tent for fumigation.
- Access to crawl spaces and attics.
- Time of year and how booked up local companies are.
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What's your biggest concern about termites?
When to call for help
Termites leave mud. Carpenter ants leave clean tunnels and sawdust. It's also the cheapest termite service. Lenders often ask for one. Get a wood-destroying insect (WDI) report either way. Buying or selling? Hollow-sounding wood is another clue. Call if you see mud tubes, pellets or an indoor swarm.
What you can do yourself
Store-bought sprays usually kill only the termites you see. It also needs even coverage around the entire foundation. The product has to reach the whole colony. Treating an active colony is harder. Keep firewood away from the house. Fix leaks and clear gutters. Pull mulch back from the foundation. Some of the work is yours.
Termites in Vancouver
Vancouver has a marine west coast climate, and termites activity here tends to pick up spring swarm season (March-May), warmer earlier in the south. In Vancouver, 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. In Vancouver, take a minute to note where you have seen activity and when it appears, so the inspection is faster and the quote more accurate. A local provider who knows Vancouver and Washington can point out the specific conditions that matter most here before you commit to a plan. In Vancouver, before you book, ask whether the inspection is included, what the treatment plan covers, how many visits to expect, and what the written quote includes. In Vancouver, getting the scope, the prep steps, and any follow-up terms in writing makes it much easier to compare providers fairly, and a good provider will walk you through each of these without pressure. About 42 inches of rain a year in Vancouver is plenty for subterranean termites, especially on any side of the house kept damp by gutters or sprinklers. Termites are a steady, moderate risk in Washington. Not every house gets them, but plenty do. With summer highs around 79°F, Vancouver's marine west coast climate decides when local termites are busiest. A typical home in Vancouver is worth around $480k, which puts a few hundred dollars for an inspection and prevention in perspective.
Local research
Termites in Vancouver, WA: what the public record shows
Before you compare quotes, it helps to know which termites actually live in Washington, when they are busiest around Vancouver, and what the state figures look like. Everything below links to the agency or university page it came from.
Termite species recorded in Washington
- Western subterranean termite (Reticulitermes hesperus) — Oregon State: causes damage to structures in the Pacific Northwest and 'may swarm any time of year'. Utah State describes swarmers 3/8 inch long and workers 1/4–3/8 inch, pale c…
- Pacific dampwood termite (Zootermopsis angusticollis) — Oregon State: 'consumes and nests inside moist, water-damaged wood'; swarms 'during late summer or fall'. A moisture problem, not a soil problem, is the usual root cause.
When termites are busiest around Vancouver
Pacific dampwood swarms late summer or fall; western subterranean may swarm any time of year (Oregon State).
WSU mapping project: subterranean termites 'predominantly found in loamy soils rather than clay or rocky soils', with area maps for Kitsap County, Olympia, Seattle, Tacoma, Spokane, Tri-Cities and Yakima. Dampwood termites indicate a moisture/rot problem.
Sources: University of Georgia Extension; University of Missouri Extension; Termites | Solve Pest Problems. Figures are quoted as the source prints them. How we check our sources
Simple ways to keep termites away
- Inspect used furniture for drywood pellets before bringing indoors.
- Screen attic and foundation vents with fine mesh.
- Store firewood well away from the house, off the ground.
- Keep mulch at least a foot from the foundation.
- Keep six inches between soil and siding or wood.
- Never leave form boards or scrap lumber in the soil.
A liquid soil treatment goes into a trench along the foundation so termites cross it on their way to the house.Did you know?
In Vancouver, when danger shows up, soldier termites bang their heads against the tunnel walls to warn the colony.
In Vancouver, termites are closer cousins to cockroaches than to ants, despite the old nickname white ants.
Questions people ask
Do I need a termite inspection when buying a house?
Either way, it's cheap peace of mind. Ask your agent when it's due. Usually, yes. Many lenders ask for a wood-destroying insect (WDI) report.
How long does termite treatment take?
Bait stations take a few hours to install. Fumigation takes two to three days. A liquid barrier takes half a day to a day.
Can termites damage a house on a concrete slab?
They come up through expansion joints, plumbing gaps and small cracks. Inspectors check those spots first. Yes.
How long do termite bait stations take to work?
Termites have to find the stations first. Then the bait spreads through the colony. Usually several weeks to a few months.
Can I pay for termite monitoring without a full treatment?
In Vancouver, termites are best caught early through inspection, because the damage is hidden inside wood until it is far along. In Vancouver, 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 Washington?
Around Vancouver, the usual culprit is the western subterranean termite.
Nearby cities
Related guides
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