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How To Build a Bat House

Bats like to congregate in small, warm spaces. Construct a house for them, and they'll reward you by eating mosquitoes and other unwanted outdoor pests.


  • Step 1: Half an inch below the front plywood piece, caulk and screw the 5-by-24-inch plywood to the pine strips, leaving a 1/2-inch vent that will serve as an entrance for the bats into the house.
  • Step 2: Put a flat roof on the house by caulking and screwing the 28-inch 1-by-3 along the top.
  • Step 3: Paint the house. If you live in a warm climate, paint the house a light color; if your climate is cooler, choose a dark shade like black. Mount the house to a tree or your garage or tool shed. It won’t be long before bats will be calling your handiwork “home.”
  • FACT: Bats can consume up to 1,000 mosquitoes in an hour.
  • Step 4: Add the top front piece to the bat house by caulking and screwing the 16 1/2 -by-24-inch plywood slat to the pine strips, painted side facing in, so that the pine strips separate the plywood pieces from each other, making a narrow space between the 2 pieces of plywood for the bats.
  • Step 5: Staple the mesh netting to the painted plywood; do not cover the pine strips with the netting. The mesh will serve as a grip for the bats to hang on, so be sure to keep the mesh flat.
  • Step 6: Caulk and screw the 2-foot pine strip to the top of the painted side of largest plywood piece, along the 2-foot side.
  • Step 7: Place three 15-inch 1-by-6's across the sides, snug against each other, and nail them to the 2-by-2s. This will be the back wall.
  • Step 8: Caulk and screw the remaining pine strips along either side the plywood, on the painted side.
  • Step 9: Paint one side of each of the plywood pieces.

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