You can attract squirrels to a nest box. Many of them will use a well-placed, well-built squirrel house for shelter or to raise their young.
If you set up a safe, elevated box with the right entrance, decent ventilation, and some protection from predators, squirrels are much more likely to use it.
Think about what squirrels want: safety from predators, a dry and warm place, and easy access. This article digs into when squirrels will actually accept a man-made house and how you can make your box more appealing, so it might just become their new home.
Will Squirrels Actually Use a Squirrel House?
If your squirrel house fits their needs for safety, warmth, and food access, squirrels will give it a try. Placement, size, and how many squirrels live nearby really matter.
Typical Squirrel Nesting Behavior
Squirrels use tree cavities, leaf nests (dreys), and sometimes man-made boxes for shelter. Most females pick a secure cavity or box to raise their young.
They want sites that stay dry, warm, and out of reach from ground predators. Squirrels line their nests with dry leaves, shredded bark, and sometimes fur.
Sometimes, they share a den in winter to stay warm—two to six squirrels will huddle together. If your squirrel house is the right size and you mount it high, a female might choose it for breeding instead of a flimsy drey.
It can take weeks or even months for squirrels to move in. If you offer food nearby and mount the box 12–30 feet high, facing east or south, you’ll help them find it faster.
Differences Between Squirrel Houses and Natural Nests
Natural nests, or dreys, sit in branches and offer quick shelter, but they don’t insulate as well as tree cavities. Tree cavities give the best protection against weather and predators.
A well-built squirrel house tries to copy a cavity’s perks: solid walls, drainage, and airflow. Use untreated cedar or pine, add a 3-inch entrance for gray squirrels, and make sure there are drainage holes and a rough inside wall for grip.
Don’t add perches, and keep the box away from bird nest boxes to avoid problems. A metal entrance ring will stop chewing and help your box last longer.
A squirrel house can beat a drey in cold weather—as long as you mount it high and keep it dry. But if you face the box into winter winds or use treated lumber, squirrels won’t touch it.
Nesting Preferences in Urban vs. Rural Areas
Urban squirrels deal with fewer mature trees and more buildings. In towns, squirrel houses get used more often because there just aren’t enough natural cavities.
You’ll see higher demand near parks, green spaces, and yards with nut trees or feeders. Rural squirrels have more tree cavities and thick canopy, so sometimes they ignore artificial boxes.
In rural spots, boxes work best if you put them near known travel routes or feeding areas. No matter where you live, the number of local squirrels makes a difference.
If lots of squirrels live nearby, a good box will get used quickly. If there aren’t many, you’ll need patience—and maybe a few food sources or native nut trees to help attract them.
How to Make a Squirrel House Inviting
Build the house the right size, place it where squirrels already travel, and toss in safe nesting materials. Use sturdy, weather-resistant construction and mount the box so it stays put through wind and changing seasons.
Choosing the Best Squirrel House Design
Pick a nest box that’s about 8–12 inches tall, 6–10 inches wide, and 6–10 inches deep. Cut a round entrance hole, 2.5–3 inches wide, about 6–8 inches above the floor.
That size fits most tree squirrels and keeps out bigger predators and raccoons. Make the roof sloped and overhanging so it sheds water, and add a hinged roof or side panel for easy cleaning.
Keep the inside smooth but not slippery—nest material should stay in place. Drill a few small ventilation holes near the top and some drainage holes in the floor.
If you want a best squirrel house that lasts, use at least 3/4-inch thick untreated cedar or pine. Reinforce the corners with stainless screws.
Skip paint or sealants on the inside.
Ideal Placement and Installation Tips
Mount the box 10–15 feet high on a tree trunk or sturdy pole, close to where squirrels already travel. Turn the entrance away from strong winds and direct afternoon sun.
South-east or east-facing usually works well. Use a metal strap or bracket that lets the tree grow and move without squeezing the trunk.
If you use a pole, keep it 10–20 feet from bird feeders to cut down on conflicts. Avoid low branches that predators could use to jump inside.
Check the box’s stability twice a year. Tighten fasteners, clear out old nesting material in late fall or early spring, and swap out any damaged wood.
A solid mount makes it much more likely that local squirrels will use your box.
Materials and Features That Attract Squirrels
Go for untreated cedar or pine—they hold up well against rot and won’t give off any weird chemicals. I’d rough up the inside a bit or carve a few small grooves, since squirrels really like something that grips their leaves and grass. Toss in a handful of dry leaves or some wood shavings on the floor. That way, the box feels ready for a cozy nest.
I always add a little ledge under the entrance, maybe 1–2 inches. It makes it easier for younger squirrels to climb in without slipping. An awning above the hole—just 2–3 inches—helps keep the rain from getting inside.
Drill a few vents up near the top and poke drainage holes in the bottom. That’s the best way to keep things dry and mold-free.
Skip bird stuff like tiny perches; you don’t want birds moving in. If you want to attract squirrels, scatter some nuts nearby or set up a feeding station where they can see it. Just don’t put it right under the box, or things might get messy.
