My fence is leaning. Can it be repaired, or does the whole thing need to be replaced?

Why fences lean in the first place

A fence is a row of levers. Every panel catches wind and every post has to resist that push at a single point: the ground line. When a post rots at grade, when its concrete footing cracks or heaves, or when the footing was never deep enough, the panel above it starts to tip. One leaning post pulls on the rails of its neighbors, and before long a whole section is off plumb.

Other causes are easier to miss. Heavy vines can add real weight and sail area. A gate that was never braced drags its hinge post over a little more every season. Sprinklers that hit the base of a post every morning keep the wood wet when the rest of the fence is bone dry.

How we size up a leaning run

Start at the posts, not the pickets. Grab each post near the top and push. A sound post barely moves; a failed one rocks at the ground. Then kneel down and probe the post right at grade and an inch below with an awl or a screwdriver. Soft, wet wood that takes the tool with little resistance is rot, and it almost always starts where the post meets soil or concrete.

Look at the footing too. A post that is solid but sitting in a cracked, tilted footing needs a new footing more than new wood. Then check where the rails meet each post. Rusted nails and split rail ends mean the panels will not survive being pulled plumb without new fasteners.

• A few bad posts and sound panels: repair the posts and re-hang.
• Many bad posts but good pickets: new posts and rails, reuse the pickets if they are worth it.
• Bad posts and tired pickets: rebuild the run.

What a repair looks like

For a short run we unscrew or cut the rails free of the failed post, brace the panels upright, and dig out the old footing. A new ground-contact treated post goes in a hole deep enough for the fence height and the soil, plumbed and braced, with concrete crowned so water runs away from the wood rather than pooling against it. Once the concrete has set we re-hang the rails with coated or stainless screws and swap any pickets that split during the work.

Where the post is sound above grade and only the bottom failed, a steel repair bracket or a sister post can save it. We covered those options in detail in our answer on a fence post that rotted off at the ground.

When replacement is the smarter spend

If you find yourself planning to replace more than a few posts and most of the rails, you are already most of the way to a new fence, and you would be bolting good new structure to old pickets that are about to fail. A rebuild on new posts, with the layout corrected and the gate finally braced properly, is usually the better investment at that point.

The same goes for a fence that was built poorly to begin with: posts set too shallow, rails toenailed into the post face, pickets nailed with bright steel that has already bled rust streaks. Propping that up buys a year or two.

If the fence sits on the property line

A fence on a shared boundary is usually a shared responsibility in California, with a notice process before work begins. Knock on the door before you pull a panel, agree on the plan, and read our plain-language explanation of the Good Neighbor Fence law so both households know where they stand.

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