The short version
Around Lake Oswego, honey bees usually swarm May and June. Swarms are usually calm and often move on. Wall colonies need removal, ideally alive, comb and all. Carpenter bees just need the wood treated and painted.
- Never seal a hole bees are using.
- Wall colonies need the comb taken out.
- Paint bare wood to deter carpenter bees.
- Ask about live removal first.
Anyone in Lake Oswego who has bees around the house and wants to handle it safely.
What to look for
A wall colony can reach tens of thousands of bees. Spraying alone leaves comb and honey behind. Most bees are helpful pollinators. Trouble starts when they move into a house.
- 1Bees streaming in and out of one gap.
- 2A buzzing sound inside a wall.
- 3Dark, sticky stains on a ceiling or wall.
- 4A swarm hanging from a branch or fence.
- 5Round, clean holes in eaves or deck boards.
- 6Sawdust under holes in bare wood.
Why it’s worth acting soon
- Wall colonies grow larger every season.
- Comb can melt and leak honey into walls.
- Old comb attracts ants, beetles and moths.
- Carpenter bee tunnels get longer each year.
Treatment options and typical costs
Live Honey Bee Relocation
$150-$500
The bees are collected alive and moved to a hive.
- Time
- 1-3 hours
- Best for
- Swarms and reachable colonies
Structural Nest Removal & Comb Cleanup
$400-$1,500
The wall is opened and the bees and comb removed. Then it's cleaned and sealed.
- Time
- 2-6 hours
- Best for
- Colonies inside walls, soffits or attics
Carpenter Bee Treatment & Wood Protection
$200-$800
Holes are treated, then filled. Painting or staining the wood helps keep them away.
- Time
- 1-3 hours
- Best for
- Round holes in bare wood
Integrated Pest Management (IPM)
$200-$800
Sealing gaps, screening vents and follow-up checks.
- Time
- Seasonal plan
- Best for
- Keeping bees from moving back in
Prices are typical published ranges. Ask what’s included before you compare quotes.
A honey bee colony in the attic often announces itself with a hum on warm afternoons. Unscreened vents like this one are a common way in.Which bees show up around Lake Oswego.
They're best left alone. Small ground-nesting bees in spring lawns are harmless. Their colonies die off each fall. Bumble bees nest in the ground or old insulation. Western carpenter bees, including the big valley carpenter bee, bore into bare wood around Lake Oswego. Honey bees are behind most calls in Lake Oswego: swarms in spring, and colonies that move into walls.
Local bees conditions in Lake Oswego.
An inspection in Lake Oswego usually starts outside and works inward, checking the foundation, gaps around doors and windows, and any moisture or clutter near the structure first. Around Lake Oswego, the area is mostly suburban, so bees 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. Lake Oswego sits in a mediterranean climate, and that sets the pace for bee activity here: spring and summer (swarming and colony growth). A provider who works Lake Oswego and Oregon 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 Lake Oswego'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.
Stone walls, hollow fence posts and the space under a deck are favorite spots for bees to settle. Check them in spring before swarm season gets going.Swarms: what to do.
a beekeeper or removal service. Keep people back. It's usually calm and moves on within days. Scouts are hunting for a new home. A swarm is a colony on the move.
Bees in the wall.
Bees and comb come out, then the wall is closed. The fix is a cut-out. Trapped bees may come into the house. Don't seal the hole, and don't just spray it. Steady traffic at one gap means a colony inside. Homes from Lake Oswego out to Oregon City and Portland see the same entry points: soffits, vents and wall gaps. Many homes around Lake Oswego have crawl spaces, and colonies sometimes settle there too.
Carpenter bees.
They drill round, half-inch holes in bare wood. Carpenter bees look like bumble bees with a shiny, bare abdomen. Painted wood is far less attractive to them. Treat the holes, fill them, then paint the wood.
A year of bees in Lake Oswego.
- Spring: swarm season, May and June. - Winter: lows near 37°F in Lake Oswego. Honey bees cluster inside. - Fall: bumble bee colonies die off. Seal gaps once bees are gone. - Summer: highs near 80°F in Lake Oswego. Watch for honey stains on walls.
Bee, wasp or hornet?
- Honey bee: fuzzy, golden brown, about half an inch. - Yellowjacket: bright yellow and black, nests in the ground. - Wasp: smooth, narrow waist, long legs. - Carpenter bee: like a bumble bee, with a shiny bare abdomen. - Bumble bee: big, fuzzy, black and yellow.
If you get stung.
Wash the area and use a cold pack. Scrape the stinger out quickly with a fingernail or card. 911 for trouble breathing or a swollen face or throat. An antihistamine eases itching.
Live removal: what it involves.
Then the space is cleaned, sealed and closed. The bees go to a managed hive. Then they cut out the comb. They open the wall and gently vacuum the bees. A specialist finds the colony, often with a thermal camera.
What to tell the removal company.
- Where the bees go in and out. - A photo or short video, taken from a safe distance. - Whether anyone at home is allergic. - Any stains, sounds or smells inside. - How long you’ve noticed them. - How high up the spot is.
Ground bees in the lawn.
They're gentle and rarely sting. Small bees over bare spring lawn are usually mining bees. Thicker grass and regular watering make the lawn less inviting. They leave within a few weeks.
Keeping bees from moving back in.
- Remove all old comb. Its scent draws new swarms. - Repaint or restain bare wood every few years. - Cap open pipes, posts and fence rails. - Screen attic, gable and crawl vents. - Seal the entry gap once the bees are gone.
Where colonies settle.
- Chimneys: a cap with screen keeps swarms out. - Hollow trees and fence posts: often fine to leave. - Grill covers and unused equipment: check in spring. - Meter and irrigation boxes: small, dark and dry. - Sheds and garages: gaps under eaves and doors. - Attics: gable and soffit vents are common entries.
Can I just spray them?
Live removal is usually the better choice. Pesticide labels also limit spraying around bees. Dead bees and comb stay inside, rot, and leak honey. Still, spraying a wall colony usually backfires. Honey bees aren't federally protected.
Kids, pets and bees.
Keep pets away from swarms and wall entrances. Teach kids to stay calm and walk away from bees. Cover sweet drinks outside. Dogs stung in the mouth or throat need a vet quickly.
When a swarm shows up.
They have no hive to defend. Swarming bees are usually calm. In spring, a swarm may hang from a branch or fence. A beekeeper may collect it. Keep people and pets back. Most move on within a day or two.
Questions to ask before you sign.
- What kind of bee is it? - How will you seal the entry afterward? - Who repairs the wall or soffit? - Will you take out all the comb and honey? - Will you remove the bees alive?
What affects the price
- Swarm pickup versus a colony inside a wall.
- How high the bees are, and whether a lift is needed.
- Opening and repairing walls, soffits or ceilings.
- Comb and honey cleanup.
- Number of carpenter bee holes.
- Whether bees can be removed alive.
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What’s your biggest bee concern?
When to call for help
if a swarm hasn't moved on in a few days. right away if anyone in the house is allergic. Call if bees use a gap in your walls or roof.
What you can do yourself
Swarms and wall colonies are not. A beekeeper or removal specialist can often save the bees. Carpenter bee holes are a fair DIY job. Treat, fill and paint.
Bees in Lake Oswego
Winter lows near 37°F in Lake Oswego send honey bees into a tight cluster; they don't leave the nest. In Lake Oswego's neighborhoods, swarms land in trees and shrubs, and colonies move into soffits and walls. With about 42 inches of rain a year and summer highs near 80°F in Lake Oswego, spring bloom is steady and swarms are common.
Local research
Bees in Lake Oswego, OR: what the public record shows
Before you compare quotes, it helps to know which bees actually live in Oregon, when they are busiest around Lake Oswego, and what the state figures look like. Everything below links to the agency or university page it came from.
Honey bee colonies, January 1, 2026 (operations with five or more colonies)
Managed hives are the source of the spring swarms that end up in homes and trees; the state table is on page 7 of the report.
USDA National Agricultural Statistics ServiceBee species recorded in Oregon
- Western honey bee (European honey bee) (Apis mellifera) — Managed colonies are surveyed by USDA NASS in the listed states; swarms leave hives in spring and move into wall voids, chimneys, and trees. If a colony is killed and not remove…
- Bumble bees (Bombus spp.) — Social native bees; 'Nests are initiated by a single female (queen) in the spring' in 'a small cavity like an abandoned rodent burrow' (WSU). They 'can sting multiple times; sti…
When bees are busiest around Lake Oswego
Spring honey bee swarm season.
Managed colony counts published in the USDA NASS Honey Bee Colonies report (August 2026).
Rules that apply in Oregon
For context, nationally
- 788 deaths (an average of 72 deaths per year) — Sting deaths, hornets/wasps/bees, 2011–2021. CDC MMWR
- 84% — Share of sting deaths among males, 2011–2021. CDC MMWR
Sources: Honey Bee Colonies (August 2026); CDC MMWR; Apidae: Bumble Bees (Bombus spp.) — Hortsense. Figures are quoted as the source prints them. How we check our sources
Simple ways to keep bees away
- Seal gaps in soffits, vents and siding before spring.
- Screen attic and crawl vents.
- Paint or stain bare wood to deter carpenter bees.
- Fill old carpenter bee holes after treatment.
- Remove old comb so new swarms aren’t drawn in.
- Keep empty bee boxes and hives closed up.
Treatment is the right call for carpenter bees and for colonies that can't be removed alive. Ask the pro which approach they recommend for your situation and why.Did you know?
A winter honey bee cluster stays near 90°F inside.
Honey bees communicate the location of flowers with a “waggle dance.”
Questions people ask
How much does bee removal cost in Lake Oswego?
A swarm pickup is often $75–$250. Wall colonies cost several hundred dollars or more, plus repairs.
Can honey bees be moved instead of killed?
Often, yes. Swarms and many wall colonies can be removed alive.
A swarm landed in my yard. What should I do?
Swarms are usually calm and move on within days. A local beekeeper may collect it.
Should I seal the hole where bees are going in?
They may get into the house. Remove the colony and comb first. No. Sealing traps the colony inside.
What happens if comb is left in the wall?
It can melt in summer heat and stain walls. It also draws ants, beetles and moths.
Are carpenter bees dangerous?
Males can't sting, and females rarely do. They do bore into bare wood, so paint or stain it. Not really.
When do bees swarm in Lake Oswego?
Usually May and June. A warm, sunny spell after bloom often sets it off.
Do bees come back after removal?
They can, if comb stays or the gap isn't sealed. The scent of old comb draws new swarms.
How much does it cost to remove Africanized honeybees?
Around Lake Oswego, homeAdvisor's 2026 benchmark is $100 to $1,000, and this is not a job to attempt yourself.
What does swarm removal usually cost?
Around Lake Oswego, a swarm clustered on a fence or branch is the easy case, and HomeAdvisor's 2026 benchmark of $125 to $200 reflects that, and local beekeepers sometimes collect swarms for less.
Nearby cities
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Sources (9)
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 Beehive Removal · Updated September 11, 2026 · How we write these guides