Audrey HayesBy Audrey Hayes

Updated November 2026

Grain elevator birdhouse plans describe a tall, narrow nest box shaped like the silo towers found on farms. This guide walks you through the basic layout, a simple cut list, the assembly order and the hole and mounting details that help birds accept the house. By the end, you will have a weatherproof box you can build in an afternoon with basic tools.

Choose the Right Size and Layout

Most grain elevator designs are built from a single height-to-width ratio: roughly 3 to 1. A common footprint is a 5-inch square base with a 14- to 16-inch total height, with a flat or pitched top that sheds rain. Keep the interior floor at least 4 inches square for starlings and the hole at about 1-1/2 inches for chickadee-sized birds. If you want a different species, check the entrance size before you cut anything.

Shopping for one? See our guide: 5 Best Birdhouses with License Plate Roof Plans for Backyard Builders (2026).

Cut List and Materials

Use 3/4-inch cedar, pine or exterior plywood. Solid wood breathes better than particleboard, and cedar resists rot. Cut the following pieces:

  • Front and back: two pieces, 5 x 15 inches
  • Sides: two pieces, 4-1/2 x 15 inches
  • Floor: one piece, 4-1/2 x 4-1/2 inches
  • Roof: one piece, 6 x 6 inches, cut at a slight angle or left flat with a 1-inch overhang
  • Front entrance panel: one piece, 5 x 2 inches, to be drilled after assembly

Add a 1/4-inch drain hole in each corner of the floor and roughen the inside faces of the front and back with a saw kerf so chicks can climb out.

Assemble the Birdhouse Step by Step

  1. Dry-fit the sides between the front and back panels to confirm the square interior.
  2. Glue and nail the sides to the front and back using 1-1/4-inch galvanized finish nails. Pre-drill near the edges to prevent splitting.
  3. Attach the floor 1-1/2 inches above the bottom edge so rain runs off and does not pool.
  4. Drill the entrance hole through the front panel, then attach the roof with two hinges or screws so you can clean the box each fall.
  5. Leave the exterior unfinished or apply a single coat of exterior-grade water-based stain on the outside only.

Mounting the Box

Mount the house 5 to 15 feet off the ground on a pole or post, facing away from prevailing winds and with the entrance out of direct afternoon sun. A metal pole with a predator guard is the most reliable option. Avoid nailing the box to a tree trunk, which exposes it to climbing predators.

Common Mistakes to Avoid

  • Making the entrance hole too large, which lets in starlings and sparrows.
  • Leaving the floor flush with the bottom edge, which traps water inside.
  • Painting or sealing the inside, which can harm nesting birds.
  • Skipping ventilation. Keep the gap under the roof or add small vent slots near the top.
  • Mounting the box in full sun, which can overheat nestlings.
  • Forstner bit set: clean, flat-bottomed holes for the entrance and drain holes, so the edges do not split. View on Amazon
  • Exterior wood glue: holds joints tight through seasonal moisture swings. View on Amazon
  • Galvanized finish nails: resist rust and hold well in cedar. View on Amazon

If you are new to cutting consistent pieces, a hand saw will do the job, but a miter saw or table saw makes the sides square and the joints clean. For other ideas that use similar techniques, see Wood Birdhouse Plans Free: 6 Easy Builds With Cut Lists and One Board Birdhouse Plans: A Step-by-Step Build From a Single Cedar Board. If you want a smaller nest box for a specific species, Wren Birdhouse Plans Free: Build a Cedar House in One Weekend uses a compact footprint, and Plans for a Bluebird Birdhouse: Build One in a Weekend covers a larger opening suited to open-field birds.

FAQ

What birds will use a grain elevator birdhouse?

Chickadees, titmice, wrens and some swallows commonly use tall boxes with small entrances. Keep the hole size matched to the species you want to attract.

Do I need to paint the birdhouse?

No. Unfinished or lightly stained exterior wood is best. Never paint or seal the inside.

How often should I clean it?

Empty and clean the box once a year, after the nesting season ends, to remove old nesting material and parasites.

Conclusion

Grain elevator birdhouse plans are a straightforward build once you settle on the 3-to-1 proportions and the right entrance size. Cut accurately, leave drainage and ventilation in place, and mount the box at a safe height. A well-built house can serve birds for many seasons.

Ready to choose one?

Audrey Hayes

About Audrey Hayes

Audrey Hayes is part of our editorial team and reviews and edits our woodworking guides, checking product details against manufacturer specifications and owner feedback.