The short version
Most termite problems in Longmont are arid-land 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 and early summer.
- 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 Longmont, whether you've spotted something or just want to know what to watch for.
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. Winter lows around Longmont average near 16°F, so termites retreat deeper into the soil, though colonies under heated basements can stay active all winter.
- 1Mud tubes running up foundation walls or piers.
- 2Piles of identical shed wings on windowsills.
- 3Tiny pinholes in drywall rimmed with mud.
- 4Small kick-out holes in exposed wood.
- 5Dry hexagonal pellets under window frames or eaves.
- 6Crumbling baseboards behind furniture.
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.
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
Annual Renewal and Monitoring
$150–$400 per year
Bait systems require monitoring to keep working. A Longmont pro checks each station, replaces consumed bait, and notes any new activity around the house.
- Time
- 30–60 minutes per visit
- Best for
- Keeping a treated home protected after the initial job
Bait Station System with Monitoring
$1,500–$3,500 install, plus $300–$500 per year
Instead of a chemical barrier, baiting in Longmont removes the colony itself. Stations are checked on a schedule, commonly quarterly, and refilled.
- Time
- 2–4 hours to install; checked quarterly
- Best for
- Colony elimination, wells and slabs, homes near water
Liquid Soil Termiticide Barrier
$1,200–$3,500 (often $3–$16 per linear foot)
Crews in Longmont dig a shallow trench against the foundation, rod termiticide into the soil, and backfill. Fipronil-type products are widely published to last five years or more.
- Time
- Half a day to a full day
- Best for
- Active subterranean termites; fast knockdown around the foundation
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.Which termites live around Longmont.
It nests in soil and builds mud tubes to reach wood. It needs steady moisture. The termite you're most likely to meet in Longmont is the arid-land subterranean termite.
Local termites conditions in Longmont.
Knowing Longmont's seasonal timing lets you schedule treatment before the busy stretch rather than after it, which usually means faster service and a more accurate quote. A provider who works Longmont and Colorado every day can point out the specific conditions that matter most here, and getting the scope, price, and follow-up terms in writing makes it easier to compare options. Longmont sits in a semi-arid climate, and that sets the pace for termite activity here: spring swarm season (March-May), warmer earlier in the south. In Longmont, the area is mostly suburban, so termites pressure can differ from one block to the next depending on how tight the entry points are and how much food, water, or shelter is close by. An inspection in Longmont usually starts outside and works inward, checking the foundation, gaps around doors and windows, and any moisture or clutter near the structure first.
Mulch piled against the house and a dripping hose bib give termites moisture and cover. Pull mulch back and fix the drip.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 Longmont, arid-land subterranean termites usually swarm in spring and early summer, often on a warm day after rain. A swarm outside means a colony is nearby.
Where to look around your house.
Wood should stay several inches above the ground. The same advice applies across the area, from Longmont out to Boulder and Loveland. Plenty of homes in Longmont have basements, so check where the wood framing sits on top of the foundation wall. Look around window wells and unfinished walls. Outside, check porches, steps and decks that touch soil.
A year of termites in Longmont.
- Summer: with highs around 88°F in Longmont, termites follow moisture, so watch AC drain lines, sprinkler zones and hose bibs. - Fall: with about 14 inches of rain a year in Longmont, make sure gutters and downspouts carry water well away from the foundation. - Winter: a good time to book an inspection in Longmont, before swarm season starts. - Spring: swarm season in Longmont, often on a warm day after rain. Check windowsills for wings.
What happens at an inspection.
They'll check the basement walls and sill plate. 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
- Amount of drilling through concrete and patios.
- Number of bait stations required.
- Linear feet of foundation to be treated.
- Liquid barrier versus bait station system.
- Whole-house fumigation versus spot treatment.
- Attached garages, decks, and additions.
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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
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. Some of the work is yours. Pull mulch back from the foundation. Fix leaks and clear gutters. Keep firewood away from the house.
Termites in Longmont
Not every house gets them, but plenty do. With summer highs around 88°F, Longmont's semi-arid climate decides when local termites are busiest. A typical home in Longmont is worth around $550k, which puts a few hundred dollars for an inspection and prevention in perspective. Longmont only sees about 14 inches of rain a year, so local termites gather wherever water collects, like sprinkler zones, hose bibs and AC drain lines. Termites are a steady, moderate risk in Colorado.
Local research
Termites in Longmont, CO: what the public record shows
Before you compare quotes, it helps to know which termites actually live in Colorado, when they are busiest around Longmont, and what the state figures look like. Everything below links to the agency or university page it came from.
When termites are busiest around Longmont
February–June (eastern subterranean, daytime after rain). Penn State: 'In Pennsylvania, swarms of winged termites usually emerge between February and June'. NC State: native species 'begin swarming in late winter and continue into September or October', and 'Swarming usually occurs during the day, particularly on warm days following rain'. Kentucky: 'Spring typically is when large numbers of winged termites... emerge inside homes'. Ohio: 'Eastern subterranean termites swarm over spring and early summer'. Missouri: swarms 'during the spring months, usually on a warm, sunny day following rain'.
Based on Longmont’s semi-arid climate profile.
Sources: University of Georgia Extension; University of Missouri Extension. Figures are quoted as the source prints them. How we check our sources
Simple ways to keep termites away
- Address wood-to-soil contact at steps, fences, and trellises.
- Keep the termite renewal contract current after treatment.
- Store firewood well away from the house, off the ground.
- Check the foundation for mud tubes every spring.
- Grade soil to slope away from the foundation.
Keep the inspection diagram, treatment record and warranty together. Buyers and inspectors will ask for them later.Did you know?
Some African termite mounds stand more than 25 feet tall.
In Longmont, some tropical termites grow fungus gardens inside the nest and eat the harvest.
Questions people ask
Are mud tubes always a sign of active termites?
Break off a piece and check back in a week. If it's rebuilt, they're active. Not always. Old tubes can stay on a wall for years.
How do I know if I have termites or flying ants?
Ants have a pinched waist; termites don't. Save one in a bag for the inspector. Check the wings and the waist. Termite wings are all the same length.
What does a WDI report include?
It also notes conditions that invite them, like wood touching soil. It only covers areas the inspector could reach. It lists any termites or damage found.
Can I treat termites myself?
The product must reach the whole colony. It also needs even coverage around the foundation. Store-bought sprays usually kill only what you see. Prevention, yes. An active colony is harder.
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.
How much does termite treatment cost?
For a homeowner budgeting a termite job, the professional-reported average post-construction price in Pest Control Technology (PCT) magazine's 2025 termite market report (about 145 respondents, 2024 pricing) was $1,100. Treat it as a benchmark, not a promise, since house size and method drive the quote.
Are termite treatment prices going up?
A homeowner putting off a termite quote should know that 75% of professionals in Pest Control Technology (PCT) magazine's 2025 termite market report (about 145 respondents) expected to raise prices in 2025. A good pro in Longmont will explain how their plan fits what they found at your home. Most professionals expected them to.
Are termites common in Colorado?
Around Longmont, the usual culprit is the arid-land 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