One-Board Birdhouse Plans Free: Build a Cedar House in One Afternoon

By Audrey Hayes

Updated November 2026

One-board birdhouse plans free of charge can get you a sturdy nest box from a single cedar fence board, a few screws and a handful of basic tools. This guide gives you a complete cut list, the dimensions that suit common cavity-nesting songbirds, and step-by-step assembly. Most builders can finish the house in an afternoon, and the same layout works for the wood you already have on hand.

Why a One-Board Design Works

A single 1×6 or 1×8 board is enough material for a complete birdhouse when the design is simple. Fewer parts mean fewer seams for rain to find, fewer chances for a loose joint, and less waste. The side walls, front, back, floor and roof can all be cut from one length of lumber if you plan the layout carefully.

Shopping for one? See our guide: 3 Best Free Printable Octagon Birdhouse Plans Frees (2026): Our Picks.

The trade-off is interior space. A one-board house is best suited to small cavity nesters such as wrens, chickadees, nuthatches and bluebirds. If you want a larger house for owls or wood ducks, look at the larger builds linked below instead.

Materials and Tools You Need

Choose untreated cedar, pine or cypress. Pressure-treated lumber contains preservatives that can harm birds, and painted or stained surfaces should stay off the interior. A 1×6 or 1×8 board at 6 feet long gives you enough length for every piece below, with room to spare for mistakes.

• One 1×6 or 1×8 cedar board, about 6 feet long, roughly 3/4 inch thick
• 1-1/4 inch exterior-grade galvanized or stainless deck screws
• Exterior wood glue (optional, for extra strength at seams)
• Tape measure, combination square and pencil
• Miter saw, circular saw or hand saw
• Drill with a 1-1/2 inch Forstner bit or hole saw for the entrance
• Drill with a 1/16 inch bit for pilot holes
• Sandpaper, 120-grit, and a sanding block
• Clamps to hold parts while you drive screws

Cut List and Dimensions

The dimensions below produce a house with a floor of 4 by 4 inches and an interior height of about 8 inches, which suits wrens, chickadees and nuthatches. Confirm your board’s actual width before cutting, since nominal 1×6 boards often measure about 5-1/2 inches wide.

Cut the roof from the leftover end of the board after cutting the other pieces, or split the roof piece from a separate 1×6 if you have the material. Keeping all cuts square matters more than hitting exact decimals, so measure twice before each cut.

Step-by-Step Assembly

Step 1: Cut Your Pieces

Mark every part on the board using the table above. Cut the front and sides with the angled top, then cut the remaining pieces square. A miter saw set to 6 degrees makes the angled cut quick and consistent.

Step 2: Drill the Entrance Hole and Drain Holes

Mark the entrance hole on the front piece, centered horizontally and 6 inches up from the bottom. Drill a 1-1/2 inch hole for wrens and chickadees, or 1-1/4 inch for chickadees only if you want to exclude house sparrows and larger birds. Drill four 1/4 inch drain holes in the floor so water runs out rather than pooling.

Step 3: Sand the Interior and Edges

Sand the inside faces and the entrance edges lightly to remove splinters. Birds can catch claws on rough wood, so take a few minutes with 120-grit paper. Leave the exterior rough if you want the house to blend with bark, or sand it smooth for a cleaner look.

Step 4: Attach the Floor and Sides

Set the floor flat on your bench. Position one side against it, flush at the bottom edge, and drive two pilot-drilled screws through the side into the floor. Repeat with the second side, then attach the front and back the same way. Check for square after each attachment by measuring corner to corner.

Step 5: Add the Roof

Center the roof on top so it overhangs about 1 inch at the front and sides. Attach it with two screws through the roof into each side wall. Use a hinged roof or a screw-in rear panel if you plan to clean the house each fall.

Step 6: Install Mounting Hardware

Drill a hole through the back extension near the top for a nail or screw. Mount the house on a post, tree or fence at 5 to 10 feet off the ground, facing away from prevailing winds and the afternoon sun.

Recommended gear

A few tools make this build faster and cleaner. A Forstner bit gives you a smooth, accurate entrance hole that a spade bit tends to tear out. A set of quick-clamp bar clamps holds the walls square while you drive screws. Stainless or galvanized deck screws resist rust outdoors far better than drywall screws, and an exterior wood glue adds strength at the seams.

• Forstner bit set: produces a clean, flat-bottomed entrance hole in cedar without splintering the exit side. View on Amazon
• Bar clamps: hold each wall in place while you drive screws, which keeps the box square. View on Amazon
• Exterior stainless deck screws: resist rust and staining on cedar. View on Amazon

Common Mistakes

• Using treated or painted lumber on the inside. Preservatives and paint fumes can harm nestlings. Stick with untreated wood inside.
• Making the entrance hole too large. A hole bigger than needed lets starlings and house sparrows in and can push out native birds.
• Skipping drain holes. Trapped water rots the floor and can chill or drown young birds.
• Leaving no way to clean the house. Nests carry parasites and old material. A hinged roof or removable back lets you clean between seasons.
• Mounting in full sun or on an exposed post. Overheating kills nestlings. Shade the house for at least part of the afternoon.
• Driving screws without pilot holes. Cedar splits easily near the edges, especially close to the ends of the board.

Tips for a Better Result

• Plan all cuts on paper before touching the saw to avoid wasting board length.
• Keep at least 1 inch of wood thickness around the entrance so the hole stays round.
• Add a small perch under the entrance only if you want to attract species that use one; many cavity nesters do not need it.
• Build two or three houses from one board by ripping it into narrower strips if your plan calls for smaller parts.
• Check the house in late winter and clean out old nests before the breeding season begins.

If you want to see how this layout compares with other small-cavity designs, the Wren Birdhouse Plans Free: Build a Cedar House in One Weekend guide uses similar dimensions. For a slightly different footprint, the Octagon Birdhouse Plans Free: Build One in a Weekend shows how to shape the walls for a different look.

Builders who want a larger house for a different species can review Large Birdhouse Plans Free: 4 Builds for Owls, Kestrels and Wood Ducks. If you are working toward bluebirds specifically, Eastern Bluebird Birdhouse Plans: Free Dimensions and Build Steps covers the hole size and mounting height bluebirds prefer. For a playful project using reclaimed materials, Wine Cork Birdhouse Plans: A Step-by-Step Build for Beginners offers a lighter option.

FAQ

What size board do I need for one-board birdhouse plans?

A 1×6 or 1×8 board about 6 feet long, roughly 3/4 inch thick, is enough for the cut list above. Nominal 1×6 boards usually measure about 5-1/2 inches wide, so check the actual width before cutting.

What is the right entrance hole size?

A 1-1/2 inch hole suits wrens and chickadees. A 1-1/4 inch hole is more common for chickadees and helps exclude larger birds. Bluebirds typically use a 1-1/2 inch hole.

Can I use pressure-treated wood?

It is better to avoid it. The preservatives in pressure-treated lumber can be harmful to birds. Untreated cedar, pine or cypress is a safer choice for both the interior and exterior.

Should I paint or stain the house?

Leave the interior bare. Exterior paint or stain is optional, and light colors help keep the house cooler. Many builders prefer to leave cedar unfinished so it weathers naturally.

How high should I mount the birdhouse?

Most small cavity nesters do well between 5 and 10 feet off the ground. Choose a spot with some shade and avoid direct afternoon sun.

When should I clean out the house?

Clean it after the nesting season ends, typically in late summer or fall, and again before the next breeding season begins. Remove old nesting material and scrub with hot water only, without soap or chemicals.

Do I need a special drill bit for the entrance hole?

A Forstner bit gives the cleanest result. A spade bit or hole saw also works, but expect more tear-out on the exit side. Back the board with scrap wood to reduce splintering.

Conclusion

With one board, a few screws and basic tools, you can build a functional nest box in an afternoon. Keep the interior untreated, size the entrance for your target species, and include drain holes and a way to clean the house. Once you have built one, the same plan scales easily to multiple houses for a backyard trail.

Related reading

• Western Bluebird Birdhouse Plans: Build a Nest Box in One Afternoon

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.