The short version
Most termite treatments for a home in Irvine cost about $1,200–$3,500. Around Irvine, bait systems cost about the same to install, plus a yearly monitoring fee. An inspection usually runs $75–$250.
- Most treatments in Irvine cost about $1,200–$3,500.
- Bait systems add a yearly monitoring fee.
- Inspections usually cost $75–$250.
- Compare what each quote covers, not just the total.
- Insurance usually doesn’t cover termite damage.
Homeowners, landlords and anyone buying or selling a house in Irvine, 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. Winters around Irvine stay mild, with average lows near 45°F, so colonies keep feeding all year. Spongy floors or bubbling paint usually mean long-running damage. So it's worth an inspection, even for one or two signs.
- 1Blistered or bubbling paint on wood surfaces.
- 2Small kick-out holes in exposed wood.
- 3Tiny pinholes in drywall rimmed with mud.
- 4Crumbling baseboards behind furniture.
- 5Piles of identical shed wings on windowsills.
- 6Dry hexagonal pellets under window frames or eaves.
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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Estimate termite treatment cost in Irvine
Adjust for your situation to see a ballpark range.
Estimated range
A rough guide only. Your quote depends on your house and what the inspection finds.
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
Some Irvine homeowners drop the renewal after a quiet year or two. That usually voids the warranty and leaves the barrier untested.
- 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
When termites are limited to one wall or window frame, an Irvine technician can treat that wood directly. Foam expands into voids, and borate soaks into bare lumber.
- Time
- 1–3 hours
- Best for
- Small drywood spots, wall voids, and exposed framing
Bait Station System with Monitoring
$1,500–$3,500 install, plus $300–$500 per year
Each station holds cellulose bait laced with a chitin synthesis inhibitor. Workers around an Irvine home share it, cannot molt, and the colony dies over weeks to months.
- Time
- 2–4 hours to install; checked quarterly
- Best for
- Colony elimination, wells and slabs, homes near water
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.What termite work costs in Irvine.
- Bait Station System with Monitoring: $1,500–$3,500 install, plus $300–$500 per year - Localized Wood, Foam, and Borate Treatment: $250–$1,500 - Annual Renewal and Monitoring: $150–$400 per year - Termite Inspection and WDI Report: $75–$250 - A typical home in Irvine is worth around $1,150k, so a $1,200–$3,500 treatment is a small share of what's at stake. On the slab homes common around Irvine, drilling through patios, porches and garage floors adds labor.
Local termites conditions in Irvine.
A provider who works Irvine and California 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. Knowing Irvine'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. An inspection in Irvine usually starts outside and works inward, checking the foundation, gaps around doors and windows, and any moisture or clutter near the structure first. Around Irvine, the area is mostly urban, 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. Irvine sits in a mediterranean climate, and that sets the pace for termite activity here: spring swarm season (March-May), warmer earlier in the south.
Subterranean termites don't stop in winter; they just go deeper. A quiet season is a good time for a non-urgent inspection.Which termites live around Irvine.
Look for tiny piles of pellets that look like coarse sand. Drywood termites are common around Irvine as well, flying straight into attic framing, eaves and furniture without any soil contact. It needs steady moisture. It nests in soil and builds mud tubes to reach wood. The termite you're most likely to meet in Irvine is the western subterranean termite.
When termites swarm here.
Save a few in a bag, or snap a clear photo. A swarm inside usually means it's in the house. A swarm outside means a colony is nearby. Drywood termites around Irvine tend to swarm in late summer and fall. Around Irvine, western subterranean termites usually swarm in spring, and again in fall after the first good rain. Swarm season is when termites show themselves.
Where to look around your house.
The same advice applies across the area, from Irvine out to Santa Ana and Huntington Beach. Keep soil and mulch below the slab edge. Outside, watch for mud tubes behind shrubs. Look where pipes come through the floor. Check the garage edges and behind baseboards. Many homes in Irvine sit on concrete slabs, so termites come up through expansion joints, plumbing gaps and settlement cracks.
A year of termites in Irvine.
- Winter: a good time to book an inspection in Irvine, before swarm season starts. - Fall: with about 14 inches of rain a year in Irvine, make sure gutters and downspouts carry water well away from the foundation. - Summer: with highs around 83°F in Irvine, termites follow moisture, so watch AC drain lines, sprinkler zones and hose bibs. - Spring and fall: swarm seasons. Around Irvine, swarms often follow the first warm days and the first fall rain.
Ways to keep the cost down.
- Book before swarm season, when schedules fill up. - If you already have a warranty, keep the renewal current. - Ask about both bait and liquid options for your house. - Fix leaks and drainage first. Moisture brings termites back. - Get two or three quotes, and compare what each one covers.
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. On a slab, they focus on joints, cracks and pipe gaps. 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?
- Tunnels: termite galleries are packed with mud. Ant tunnels are clean and smooth. - Debris: termites leave mud. Carpenter ants leave sawdust. - Antennae: termite antennae are straight. Ant antennae bend like an elbow. - Waist: termites are thick through the middle. Ants are pinched. - Wings: termite wings are all the same length. Ant wings aren’t.
Getting ready for treatment day.
Drill holes in slabs or patios get patched afterward. Keep kids and pets inside while the Irvine crew applies the product, and ask how long to stay off treated soil. In California, Reticulitermes swarm in the afternoon in spring or fall on clear days after a soaking rain; drywood swarmers fly in daytime during summer and fall; Heterotermes aureus flies late afternoon/early evening in July–September (UC IPM). Flag sprinkler heads and buried lines. Move boxes away from garage walls. Clear a walking path along the exterior walls. Prep is light for liquid treatments and bait stations.
Mulch and termites.
Wood chips touching the siding trap the moisture termites are after. A dry gap along the house makes mud tubes easier to spot; in Irvine's dry climate the risk is irrigation and leaky hose bibs rather than rain. Pull mulch back from the foundation and keep the layer thin.
Questions to ask before you sign.
- What do I need to do before and after treatment? - What does the yearly renewal cost? - What does the warranty cover, and for how long? - Is the whole foundation treated, or just one spot? - What product or system will you use? - Which termites did you find, and where?
What affects the price
- Time of year and how booked up local companies are.
- Wells, drains, or water features limiting chemical use.
- Cubic footage under the tent for fumigation.
- Annual renewal and monitoring fees.
- Attached garages, decks, and additions.
- Linear feet of foundation to be treated.
- Amount of drilling through concrete and patios.
- Warranty type: retreatment only or damage repair.
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What's your biggest concern about termite control costs?
When to call for help
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. Lenders often ask for one. It's also the cheapest termite service. Carpenter ants leave clean tunnels and sawdust. Termites leave mud.
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 Irvine
Irvine 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. Termite activity in California is above average. Most houses will see termites at some point. With summer highs around 83°F, Irvine's mediterranean climate decides when local termites are busiest. A typical home in Irvine is worth around $1,150k, which puts a few hundred dollars for an inspection and prevention in perspective.
Local research
Termites in Irvine, CA: what the public record shows
Before you compare quotes, it helps to know which termites actually live in California, when they are busiest around Irvine, and what the state figures look like. Everything below links to the agency or university page it came from.
Termite control products for drywood termites
Drywood and subterranean termite work in California is effectively professional-only; the state licenses it by branch.
UC Statewide IPM ProgramTermite species recorded in California
- 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…
- 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'…
- Desert subterranean termite (Heterotermes aureus) — UA Extension calls it an 'important structural pest' of the desert Southwest. UC IPM: 'flies in the late afternoon or early evening in July, August, and September'.
- 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…
When termites are busiest around Irvine
Reticulitermes swarm in the afternoon in spring or fall on clear days after a soaking rain; drywood swarmers fly in daytime during summer and fall; Heterotermes aureus flies late afternoon/early evening in July–September (UC IPM).
UC IPM: Reticulitermes 'can be encountered in nearly all regions of the state'; the western drywood termite is 'California's second most important termite pest', found along the Pacific coast, Central Valley and Southern California deserts. FDACS lists California among states with Formosan termites. Branch 3 covers 'the control of wood-destroying pests or organisms by the use of insecticides or structural repairs and corrections'; Branch 1 covers fumigation.
Rules that apply in California
Sources: Drywood Termites (Pest Notes); University of Georgia Extension; University of Missouri Extension; Formosan Termite Program; Not All Termites Are Terrible (Home and School IPM Newsletter); Termites | Solve Pest Problems. Figures are quoted as the source prints them. How we check our sources
Simple ways to keep termites away
- Grade soil to slope away from the foundation.
- Fix leaking hose bibs, faucets, and pipes promptly.
- Set deck and porch posts on concrete, not soil.
- Repair rotting trim, fascia, and window frames.
- Remove tree stumps and buried wood near the house.
- Use borate-treated or pressure-treated lumber for repairs.
A liquid soil treatment goes into a trench along the foundation so termites cross it on their way to the house.Did you know?
Around Irvine, some tropical termites grow fungus gardens inside the nest and eat the harvest.
Around Irvine, termites are closer cousins to cockroaches than to ants, despite the old nickname white ants.
Questions people ask
Is a bait system cheaper than a liquid treatment?
Not usually upfront. Around Irvine, bait costs about the same to install, plus a yearly monitoring fee. A liquid barrier has no monthly checks. Ask for both prices.
How much does a termite inspection cost?
Usually $75–$250. Some companies credit it toward treatment if you go ahead. It's worth asking.
Does homeowner insurance pay for termite damage?
Usually not. Most policies treat termite damage as preventable. That's why catching it early matters.
What does a termite warranty cover?
It depends on the plan. Some cover re-treatment only. Others also cover repairs. Ask what's excluded, and whether it transfers if you sell.
How long does termite treatment take?
A liquid barrier takes half a day to a day. Bait stations take a few hours to install. Fumigation takes two to three days.
How do I know if I have termites or flying ants?
Check the wings and the waist. Termite wings are all the same length. Ants have a pinched waist; termites don't. Save one in a bag for the inspector.
Do most pest control companies treat existing homes for termites?
Around Irvine, termites are best caught early through inspection, because the damage is hidden inside wood until it is far along. Around Irvine, 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 California?
Around Irvine, the usual culprit is the western subterranean termite.
Nearby cities
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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