A fence corner of three 4x4 posts, two horizontal braces and two diagonal tie wires.
Draft plan, generated from the model. Not yet build-tested.
8 ftPost spacing
36 inPost depth
58 inAbove ground
2 to 3 hrBuild time
$104.02Materials
Drawings All dimensions in inches
3D viewfinishedFront elevationRight elevationPlan viewfrom above
Cut list: lumber Long-point lengths; angles noted
Qty
Stock
Length
Part
Cut
1
4x4 PT
94
Corner post
2
4x4 PT
94
End post
2
4x4 PT
92 1/2
Brace
cut to fit, notched or toe-screwed
Lumber cutting diagram Lengths chosen for the lowest cost; 1/8 in kerf, 1/2 in end trim
4x4 PT x 8 ft
Corner post 94
4x4 PT x 8 ft
End post 1 94
4x4 PT x 8 ft
End post 2 94
4x4 PT x 8 ft
Brace 1 92 1/2
4x4 PT x 8 ft
Brace 2 92 1/2
Shopping list $104.02 checked / $0.00 estimated
Item
Store
Qty
Each
Line
Note
4x4x8 ground-contact pressure-treated
Home Depot
5
$11.28
$56.40
see lumber cutting diagram
UV zip ties 11 in, 100 ct (also used for tie wire)
Home Depot
1
$17.65
$17.65
tie wire; use 9-gauge if you have it
Exterior wood screws #9 x 2.5 in, 5 lb box
Home Depot
1
$29.97
$29.97
Total before tax
$104.02
Filled dot: price read from a store listing on Oct 20, 2026. Hollow dot: estimate. Prices come from the master price list, so they change when it changes.
Build steps
Dig three holes 36 in deep: the corner, and two 8 ft away along each fence line. Set the three posts plumb and tamp gravel round each.
Cut two horizontal 4x4s to fit between the corner post and each end post, 40 in off the ground, and notch or toe-screw each end.
Wrap tie wire twice from the bottom of each end post up to the top of the corner post, forming a diagonal from the base of the far post.
Twist each wire tight with a stick until it hums. Check that both braces are tight.
Tie the fence wire to the corner post and tension it only after both braces are done.
Before you start
A corner takes the pull of two fence lines. Brace both directions: one H-brace is not enough.
For a hot or tension fence use 6 in posts and a longer brace. Brace every 330 ft on a straight run too.
The diagonal wire must run from the bottom of the end post to the top of the corner post, or the brace has no effect.
Draft drawings generated from the model. Build one before selling this plan.