How Deep Should a Fence Post Be?
For an average fence post, about 6 to 8 feet tall, prepare to dig a post hole about 2 feet deep. To install a fence post, you’ll need a shovel or post digger, a 6-foot level, soil, and gravel or crushed stone. For gateposts, you’ll need concrete too.
How to Install a Fence Post in 5 Steps
Should Fence Posts Be Set in Concrete?
You’ll need to pour a concrete footing only for posts that support a gate, are freestanding at the end of the fence, or when rock stops you from digging deep enough, one-third of the post’s length.
How to Replace a Rotted Fence Post
Concrete is costly—each post requires two or three $5 bags—and slow, as posts must be braced until the concrete sets.