By Audrey HayesUpdated November 2026
Free birdhouse plans for sparrows give you a simple, sturdy nest box built from one 1×6 board and a few screws. This guide covers the dimensions, cut list, and assembly steps for a house sparrow box, plus the placement and entrance-hole details that help it get used. You can finish the build in an afternoon with basic hand or power tools.
Dimensions and Cut List
House sparrows (English sparrows) prefer a box with a 1-1/8 inch entrance hole. Most plans for them use a floor of about 4 x 4 inches and a height of roughly 8 to 10 inches from floor to roof peak, which gives enough room for a nest without inviting larger birds. The table below lists the pieces for a standard 1×6 build using nominal lumber, so cut to actual dimensions (about 3/4 x 5-1/2 inches).
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| Part | Quantity | Dimensions |
|---|---|---|
| Front | 1 | 5-1/2 x 9 in, top corners cut at 45 degrees for the roof slope |
| Back | 1 | 5-1/2 x 11 in, top corners cut at 45 degrees |
| Sides | 2 | 4 x 11 in, top edge angled to match roof |
| Floor | 1 | 4 x 4 in |
| Roof | 1 | 5-1/2 x 6 in |
How to Assemble the Sparrow Box
Assembly is straightforward, but the order matters so the box stays square and the roof sits flush. Use exterior-grade galvanized or coated screws, and drill pilot holes to avoid splitting the cedar or pine.
- Cut all pieces to size and mark the 45-degree angles on the front, back, and sides.
- Drill the 1-1/8 inch entrance hole in the front panel, centered about 6 inches from the bottom. Drill a few 1/4 inch drain holes in the floor and two small ventilation holes near the top of the sides.
- Attach the sides to the floor, keeping edges flush. Add the back panel next, then the front.
- Screw the roof to the top edges, leaving a slight overhang on the front for rain protection.
- Add a hinged or removable panel on one side or the roof so you can clean the box after nesting season.
Interior Roughening and Perch Options
Score the inside front and back walls with a saw kerf or rough it with a file so chicks can climb to the entrance. Skip the external perch. House sparrows do not need one, and it gives predators a foothold.
Placement and Mounting
Mount the box 6 to 10 feet off the ground on a post, pole, or wall, facing away from prevailing winds and away from direct afternoon sun. Clear a line of sight so the entrance is not blocked by branches. Avoid placing it near feeders, since crowding can increase competition and disturbance.
Common Mistakes to Avoid
- Using a hole larger than 1-1/8 inch, which lets starlings or larger birds in.
- Leaving out drain holes, so moisture pools on the floor.
- Using treated lumber or painting the interior, both of which can harm nesting birds.
- Skipping the cleaning step; remove old nesting material between seasons to reduce parasites.
- Mounting the box too low, where cats and raccoons can reach it.
Recommended Gear
- Forstner bit set for drilling a clean 1-1/8 inch entrance hole without tearout. View on Amazon
- Exterior wood screws, stainless or coated for assembly that will not rust in rain. View on Amazon
- Miter saw for making the clean 45-degree roof cuts quickly. View on Amazon
FAQ
What size hole do sparrows need?
House sparrows use a 1-1/8 inch entrance hole. A smaller hole can keep out some birds, but this size is the standard for sparrow-specific plans.
When should I put up a sparrow birdhouse?
Install the box in late winter or early spring, before nesting starts. Sparrows often nest several times a year, so the box can stay up through the warm months.
Should I clean out the nest box?
Yes. Remove old nesting material after the season ends to reduce parasites and make the box ready for the next year. Wear gloves and a dust mask while cleaning.
Conclusion
With one 1×6 board, a 1-1/8 inch hole, and the cut list above, you can build a sparrow nest box in an afternoon. Mount it at the right height, keep the interior unpainted, and clean it each year. For related builds, see House Sparrow Birdhouse Plans: Build a Nest Box That Works and Free Printable Birdhouse Plans: Step-by-Step Guide for Beginners.
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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.
