The short version
Most wasp nests in San Francisco cost about $100–$400 to treat and remove. Nests inside walls or high up cost more.
- Most wasp nests in San Francisco cost about $100–$400.
- Wall, ground and high nests cost more.
- Ask whether nest removal is included.
- Small spring nests are cheap to deal with.
- Compare what each quote covers.
Homeowners and renters in San Francisco with a nest near a door, deck or play area.
What to look for
Wasps defend the area around their nest. Near a door or deck, stings will happen. Around San Francisco, queens start nests in February or March, and colonies peak in late summer. Late-summer colonies are big and quick to sting.
- 1Wasps entering an attic vent, dryer vent or weep hole.
- 2Multiple stings on one person during a single outdoor task.
- 3Wasps appearing indoors near light fixtures or windows.
- 4Yellowjackets streaming from the ground after mowing or trimming.
- 5Open umbrella-shaped comb under a porch ceiling or railing.
- 6Sudden wasp interest in overripe fruit under a tree.
Why it’s worth acting soon
- Nests grow all summer.
- Ground nests get disturbed by mowing.
- Wall nests can chew through into rooms.
- Stings are dangerous for anyone allergic.
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Estimate wasp removal cost in San Francisco
Adjust for your situation to see a ballpark range.
Estimated range
A rough guide only. Wall, ground and high nests cost more.
Treatment options and typical costs
Inspection and Nest Identification
$75–$200
Not every buzzing insect is a wasp. Not every wasp is a threat. A careful look separates a lone paper wasp from a yellowjacket colony in San Francisco.
- Time
- 45–75 minutes
- Best for
- Every job; species and nest location decide the method
Sealing Up After the Nest Is Dead
$150–$450
Once the nest is dead, the gap gets sealed. Caulk, copper mesh or a soffit patch works. Old nests are not reused, but the gap invites new queens.
- Time
- 1–2 hours
- Best for
- Sealing the gap once the nest is dead
Ground and Wall-Void Nest Treatment
$150–$500
Wall-void nests behind siding get the same dust treatment. In San Francisco, the pro should leave the opening unsealed until all traffic stops, since trapped wasps chew inward toward living space.
- Time
- 30–60 minutes plus a return visit
- Best for
- Yellowjackets in lawns, retaining walls, soffits and wall voids
Aerial Nest Treatment and Removal
$100–$400
A treated nest should go quiet within a day. A few stragglers are normal. Ask whether removal and a follow-up check are included.
- Time
- 30–90 minutes
- Best for
- Exposed paper wasp, hornet and bald-faced hornet nests
Prices are typical published ranges. Ask what’s included before you compare quotes.
Yellowjackets often nest in old rodent holes and gaps in garden walls. Watch for wasps flying low and steady into one spot.What wasp removal costs in San Francisco.
- Aerial Nest Treatment and Removal: $100–$400 - Ground and Wall-Void Nest Treatment: $150–$500 - Sealing Up After the Nest Is Dead: $150–$450 - Inspection and Nest Identification: $75–$200 - A typical home in San Francisco is worth around $1,300k, and most wasp jobs are a one-time cost. Overwintering yellowjacket nests around San Francisco can get huge and cost more.
Local wasps conditions in San Francisco.
San Francisco sits in a mediterranean climate, and that sets the pace for wasp activity here: mid-summer through fall (July-October). In San Francisco, the area is mostly urban, so wasps 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.
Paper wasps like quiet, sheltered corners. Check garage rafters, door tracks and high shelves in spring for small starter combs.Which wasps live around San Francisco.
Paper wasps are the most common around San Francisco. They build open, umbrella-shaped combs under eaves and railings. Western yellowjackets nest in the ground and in wall voids. They cause most stings. Bald-faced hornets build big gray nests in trees and eaves. In mild winters around San Francisco, some yellowjacket nests survive and grow huge. Leave those to a pro. Mud daubers build tube-shaped mud nests. They rarely sting.
When they’re most active.
Winters around San Francisco are mild, so nests can last much longer. Early spring is the easiest time to remove small starts.
Where they nest around houses here.
Plenty of homes in San Francisco have basements, but most nests are higher up. Check eaves, attic vents and window frames. Watch for traffic in and out of gaps. A ground nest looks like wasps streaming from one hole. Homes from San Francisco out to Oakland and San Mateo share the same favorite nest spots.
A year of wasps in San Francisco.
- Winter: lows near 46°F in San Francisco. Some nests keep going. - Late summer: peak season. Workers hunt sweets near people. - Summer: highs near 67°F in San Francisco help colonies grow fast. - Spring: queens start new nests around February or March. Knock down small starts.
Wasp, hornet or bee?
- Honey bee: fuzzy and golden. about relocation. - Mud dauber: thin waist, mud tube nests. Rarely stings. - Hornet: larger, with a big closed paper nest. - Yellowjacket: bright yellow and black, nests in the ground. - Paper wasp: slim, long legs, open comb.
If you get stung.
If someone carries an epinephrine pen, use it. 911 for trouble breathing or a swollen face or throat. An antihistamine can ease itching and swelling. Wash the sting and use a cold pack. Move away from the nest first.
Keeping wasps away from the patio.
- Gaps: seal gaps after a nest is gone. - Spring checks: knock down small nests early. - Fruit: pick up fallen fruit. - Trash: keep lids tight and bins away from doors. - Food: cover plates and drinks outdoors.
Ground nests: what to do.
Pros treat ground nests at night, when the colony is home. Don't pour gasoline or water in. Don't mow over it. Keep kids and pets away. Mark the hole with a flag.
A nest, or just visitors?
Follow the line back to an eave, vent, shrub or hole. Watch at dusk, when they fly home. A nest shows steady traffic to one spot. Wasps on flowers or trash cans may come from far away.
Treating a small nest yourself, safely.
- Leave it overnight, then bag the nest. - Never spray from a ladder. - Use a jet wasp spray from several feet away. - Wear long sleeves, pants and gloves. - Wait until dusk, when wasps are home and slow. - Never if anyone in the house is allergic. - Only if it’s small, low and out in the open.
Wasps and pets.
Keep pet food and water bowls indoors in late summer. your vet if the throat swells or breathing changes. Most stings just swell a little. Dogs often snap at wasps and get stung on the face.
Kids and wasps.
Use cups with lids for sweet drinks outside. Check play sets, slides and playhouses for nests each spring. Swatting makes a sting more likely. Teach kids to walk away calmly.
After the nest is gone.
Knock down small new nests early next spring. Check nearby eaves for new starts. Seal the gap a wall nest used once it's quiet. Wasps don't reuse old nests.
Wasps at picnics and barbecues.
- Kids: teach them to walk away calmly. - Calm: don’t swat; slowly move away. - Trash: bag scraps and close the bin. - Food: keep it covered until you eat. - Drinks: use cups with lids or straws.
Ground nests in the lawn.
Mark it, and keep mowers and kids away until it's treated. Watch for wasps flying in and out of the grass. Yellowjackets often nest in old rodent holes.
Questions to ask before you sign.
- Is a return visit included? - Is removal of the dead nest included? - How will you treat a nest inside the wall? - What kind of wasp is it?
Ways to keep the cost down.
- Seal gaps once a nest is gone. - Ask if removal is included. - Call early, before nests get big. - Knock down small nests in spring.
What affects the price
- Nest height, and whether it needs a lift.
- Local labor rates and seasonal demand.
- Whether nest removal is included after treatment.
- Number of nests found on the property.
- Distance from the company's base and travel time.
- An open comb or a nest inside a wall.
- Preventive spring treatment bundled with removal.
- Colony size, which climbs sharply from June to September.
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What's your biggest concern about wasp control costs?
When to call for help
Call for nests in walls, attics, the ground, or anywhere high. right away if anyone in the house is allergic. Don't seal a hole wasps are using. They'll find another way in.
What you can do yourself
A small, reachable paper wasp nest is a fair DIY job. Spray it at dusk with a wasp aerosol. Knock it down the next day. Big, high or hidden nests are a job for a pro.
Wasps in San Francisco
In denser parts of San Francisco, nests turn up in eaves, balconies, signs and wall gaps. Winter lows near 46°F in San Francisco are mild, so some yellowjacket nests survive the winter and keep growing. With summer highs near 67°F in San Francisco, colonies grow fast and are biggest by August.
Local research
Wasps in San Francisco, CA: what the public record shows
Before you compare quotes, it helps to know which wasps 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.
Yellowjacket colony size (UC IPM)
A mature nest inside a wall void can hold thousands of workers.
UC Statewide IPM ProgramPaper wasp colony size (UC IPM)
Paper wasp nests under eaves are small and usually a quick single-visit job.
UC Statewide IPM ProgramWasp species recorded in California
- Western yellowjacket (Vespula pensylvanica) — UC IPM: 'the most commonly encountered species and is sometimes called the "meat bee"' in California and the Western states; ground and wall-void nester and aggressive scavenger…
- German yellowjacket (Vespula germanica) — UC IPM: 'becoming more common in many urban areas of California, where it frequently nests in houses.' Named among Ohio's three main species (German, Eastern, Common yellowjacke…
- Bald-faced hornet (Dolichovespula maculata) — Penn State: 'found in most of the 48 contiguous states and D.C., throughout Canada and in Alaska'; actually an aerial yellowjacket that builds the football-shaped gray paper nes…
- European paper wasp (Polistes dominula) — Penn State: 'first reported in 1978 around Boston', now 'coast to coast ... although they are apparently less common in the Southeast and Great Plains'; nests in 'eaves of struc…
When wasps are busiest around San Francisco
Queens emerge in late winter to early spring, nests grow from spring to midsummer and peak in late summer; in coastal California south of San Francisco some yellowjacket colonies survive several years and become very large (UC IPM).
UC IPM: the western yellowjacket is the most commonly encountered species ('meat bee'); the German yellowjacket 'is becoming more common in many urban areas of California, where it frequently nests in houses.' Paper wasps (Polistes fuscatus aurifer, P. apachus, P. dominula) prefer orchards and vineyards.
Rules that apply in California
For context, nationally
- 788 — Deaths from hornet, wasp, and bee stings, 2011–2021 (US). CDC MMWR
- 72 deaths per year — Average annual sting deaths, 2011–2021 (US). CDC MMWR
Sources: Yellowjackets and Other Social Wasps (Pest Notes); CDC MMWR; Baldfaced Hornet; European Paper Wasp. Figures are quoted as the source prints them. How we check our sources
Simple ways to keep wasps away
- Keep trash cans lidded and rinse recycling before binning.
- Store pet food indoors and clean bowls after meals.
- Fill old rodent burrows and mulch-bed holes in spring.
- Repair torn window screens and door sweeps.
- Cover drinks outdoors and use lidded cups for kids.
- Check sheds and garages for nests each May.
In apartment buildings, one nest in a shared wall or balcony can affect several units. Let the building manager know so it gets treated once, properly.Did you know?
Wasp nest paper inspired early experiments in making paper from wood
Some paper wasps can tell their nestmates apart by their faces
Questions people ask
What should a good quote include?
Nest type and location, treatment, removal and return visits.
How much does wasp nest removal cost?
Most nests around San Francisco cost about $100–$400 to treat and remove. Hidden or high nests cost more.
Why does a nest inside a wall cost more?
It takes more work to reach and treat. Sometimes it needs a return visit or drywall repair.
Does homeowners insurance cover wasp removal?
Usually not. Insurers treat it as routine maintenance.
What should I do if I get stung?
An antihistamine helps with itching. 911 for trouble breathing or a swelling throat.
Can wasps damage my house?
Carpenter bees do more wood damage. Yellowjackets in walls can chew through drywall. Rarely by much.
What time of day should a wasp nest be treated?
At dusk or after dark, when they're home and calm.
What stops people from dealing with wasp nests?
In San Francisco, fear of stings, nests that are hard to reach, and not noticing them until they're big.
When is wasp season in San Francisco?
Mild winters let some nests keep going.
Are hornets common in San Francisco?
Bald-faced hornets are, in trees and on eaves. Most stings come from yellowjackets, though.
Nearby cities
Related guides
Sources (8)
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 Wasp Exterminator · Updated September 11, 2026 · How we write these guides