The depth of your post hole depends on your post length. If you decide on a two-rail fence, the posts are likely 6 feet long. You want your hole to be at least 1/3 of the post length. In this case, your post hole should be two feet deep.

If you opt for a three-rail fence, the posts will typically be 7 feet long, meaning your post hole should be 28 inches deep.

Who pays for a new fence between neighbors depends on its location relative to the property line. If you build the fence entirely on your property, you are solely responsible for the costs of installation, maintenance, and repair. If the fence is built directly on the property line, both neighbors are typically responsible for the costs. In this case, it is essential to consult with your neighbor beforehand to agree on a plan for payment. While you should always inform your neighbor of your plans in advance, you generally cannot force them to contribute financially unless there are specific local laws, such as in California, where both parties might be responsible for costs unless a different agreement exists. It's a good idea to get a property line survey to know the exact boundaries before building.

Installation typically takes 2-5 days, depending on the size and complexity of the project.

You should stain both sides of your fence to get the full benefits. Fences often fall along property lines, so you may want to save a buck by leaving your neighbor’s side in the dust. If you do that, all you get is a slightly better view. Moisture and UV rays can still sneak in through the side that’s unpainted or worn down and damage your fence. Rot and rust will spread, even if you can’t see it from your side of the lawn.