The short version
Most termite treatments for a home in San Francisco cost about $1,200–$3,500. Across San Francisco, bait systems cost about the same to install, plus a yearly monitoring fee. An inspection usually runs $75–$250.
- Most treatments in San Francisco 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 San Francisco, 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 San Francisco stay mild, with average lows near 46°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.
- 1Mud tubes running up foundation walls or piers.
- 2Damage found during a remodel or repair.
- 3Dry hexagonal pellets under window frames or eaves.
- 4Termite tubes hanging down from ceilings or joists.
- 5Piles of identical shed wings on windowsills.
- 6Termite activity reported at a neighbor's home.
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.
🧮
Estimate termite treatment cost in San Francisco
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
Renewal fees are small next to a second full treatment. For San Francisco homeowners, the visit usually includes a walk-around, a crawl space check, and a bait station service.
- 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
Each station holds cellulose bait laced with a chitin synthesis inhibitor. Workers around a San Francisco 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
Fumigation for Drywood Termites
$1,200–$4,000 (often $1–$4 per square foot)
Fumigation tents the house and fills it with sulfuryl fluoride gas. For San Francisco homes with drywood termites in several areas, it is the only way to reach every gallery.
- 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.
Check under the kitchen sink for dampness and soft cabinet wood. Plumbing walls are a common path for termites coming up from a slab.What termite work costs in San Francisco.
- A typical home in San Francisco is worth around $1,300k, so a $1,200–$3,500 treatment is a small share of what's at stake. Basement homes around San Francisco may need drilling along inside walls, which adds time. - Fumigation for Drywood Termites: $1,200–$4,000 (often $1–$4 per square foot) - Bait Station System with Monitoring: $1,500–$3,500 install, plus $300–$500 per year - Annual Renewal and Monitoring: $150–$400 per year - Termite Inspection and WDI Report: $75–$250
Local termites conditions in San Francisco.
Across San Francisco, 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. An inspection in San Francisco usually starts outside and works inward, checking the foundation, gaps around doors and windows, and any moisture or clutter near the structure first. Knowing San Francisco'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 San Francisco 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. San Francisco 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 San Francisco.
It nests in soil and builds mud tubes to reach wood. It needs steady moisture. Drywood termites are common around San Francisco as well, flying straight into attic framing, eaves and furniture without any soil contact. Look for tiny piles of pellets that look like coarse sand. The termite you're most likely to meet in San Francisco is the western subterranean termite.
When termites swarm here.
Across San Francisco, western subterranean termites usually swarm in spring, and again in fall after the first good rain. Drywood termites around San Francisco tend to swarm in late summer and fall. 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. Swarm season is when termites show themselves.
Where to look around your house.
Look around window wells and unfinished walls. Outside, check porches, steps and decks that touch soil. Wood should stay several inches above the ground. The same advice applies across the area, from San Francisco out to Oakland and San Mateo. Plenty of homes in San Francisco have basements, so check where the wood framing sits on top of the foundation wall.
A year of termites in San Francisco.
- Spring and fall: swarm seasons. Across San Francisco, swarms often follow the first warm days and the first fall rain. - Winter: a good time to book an inspection in San Francisco, before swarm season starts. - Fall: with about 24 inches of rain a year in San Francisco, make sure gutters and downspouts carry water well away from the foundation. - Summer: with highs around 67°F in San Francisco, termites follow moisture, so watch AC drain lines, sprinkler zones and hose bibs.
Ways to keep the cost down.
- Book before swarm season, when schedules fill up. - Get two or three quotes, and compare what each one covers. - Fix leaks and drainage first. Moisture brings termites back. - Ask about both bait and liquid options for your house. - If you already have a warranty, keep the renewal current.
What happens at an inspection.
Afterward, ask them to show you what they found. A moisture meter and a probe help them find hidden activity. They'll check the basement walls and sill plate. 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. Photos help.
Termites or ants?
- 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. - Antennae: termite antennae are straight. Ant antennae bend like an elbow. - Debris: termites leave mud. Carpenter ants leave sawdust.
Getting ready for treatment day.
Keep kids and pets inside while the San Francisco 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. Drill holes in slabs or patios get patched afterward.
Mulch and termites.
A dry gap along the house makes mud tubes easier to spot; in San Francisco that means extending downspouts and pulling mulch back from the slab. Pull mulch back from the foundation and keep the layer thin. Wood chips touching the siding trap the moisture termites are after.
Questions to ask before you sign.
- What do I need to do before and after treatment? - 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 affects the price
- Wells, drains, or water features limiting chemical use.
- Amount of drilling through concrete and patios.
- Local labor rates and licensing requirements.
- Liquid barrier versus bait station system.
- Species: subterranean, drywood, or Formosan.
- Cubic footage under the tent for fumigation.
- Linear feet of foundation to be treated.
- Annual renewal and monitoring fees.
📊
What's your biggest concern about termite control costs?
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
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 San Francisco
A typical home in San Francisco is worth around $1,300k, which puts a few hundred dollars for an inspection and prevention in perspective. With summer highs around 67°F, San Francisco's mediterranean climate decides when local termites are busiest. Most houses will see termites at some point. Termite activity in California is above average. About 24 inches of rain a year in San Francisco is plenty for subterranean termites, especially on any side of the house kept damp by gutters or sprinklers.
Local research
Termites in San Francisco, 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 San Francisco, 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 San Francisco
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
- Inspect used furniture for drywood pellets before bringing indoors.
- Repair rotting trim, fascia, and window frames.
- Use borate-treated or pressure-treated lumber for repairs.
- Keep gutters clean so water does not pool.
- Seal cracks in the foundation and slab.
- Fix leaking hose bibs, faucets, and pipes promptly.
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?
Across San Francisco, when danger shows up, soldier termites bang their heads against the tunnel walls to warn the colony.
Questions people ask
Why do termite quotes vary so much?
Compare what's included, line by line. Drilling through concrete adds labor. Some include a warranty or yearly checks. Companies measure differently and use different products.
How much does termite fumigation cost?
Drywood termites are common around San Francisco, so it does come up. It's mainly for drywood termites. Usually $1,200–$4,000, often $1–$4 per square foot.
How much does termite treatment cost?
The size of the house matters most. Across San Francisco, bait systems cost about the same to install, plus $300–$500 a year. Most liquid treatments run about $1,200–$3,500.
Does homeowner insurance pay for termite damage?
That's why catching it early matters. Most policies treat termite damage as preventable. Usually not.
How long does termite treatment take?
Fumigation takes two to three days. Bait stations take a few hours to install. A liquid barrier takes half a day to a day.
How long do termite bait stations take to work?
Then the bait spreads through the colony. Termites have to find the stations first. Usually several weeks to a few months.
Can termites damage a house on a concrete slab?
Inspectors check those spots first. They come up through expansion joints, plumbing gaps and small cracks. Yes.
Can you treat for termites before building a house?
Across San Francisco, termites are best caught early through inspection, because the damage is hidden inside wood until it is far along. Across San Francisco, 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 San Francisco, the usual culprit is the western subterranean termite.
Nearby cities
Related guides
Sources (10)
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