Most fence posts are spaced about six to eight feet apart, although you can go as far apart as 10 feet depending on the type and length of the fence and your property. You should have the corner posts installed first to dictate the proper alignment and spacing of all the posts in between. The standard six-foot residential fence’s posts are usually no more than eight feet apart to offer the best stability and support, keeping your fence standing straight even under high winds and adverse weather conditions.