How to Align Fence Posts in a Straight Line

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Setting fence posts in a straight line is an important step in building a sturdy and visually appealing fence. Here are some steps to follow:

1. Mark the fence line: Use stakes and string to mark the desired fence line. This will serve as a guide for placing the posts.

2. Dig the holes: Use a post hole digger to dig holes at regular intervals along the fence line. The depth of the holes should be at least one-third the length of the post.

3. Measure and align: Measure the distance between each hole to ensure equal spacing. Use a level and string to align the holes in a straight line.

4. Set the posts: Place the posts in the holes and fill them with concrete. Use a level to ensure the posts are straight and upright.

5. Allow the concrete to set: Follow the instructions on the concrete mix to allow it to set properly. This usually takes a few days.

By following these steps, you can easily set fence posts in a straight line, ensuring a strong and visually appealing fence.


When planning the layout of a fence, there are two methods you can use: the traditional way, with strings, or a more modern approach using a laser. Regardless of the method, the first step is always to determine your property boundaries to ensure that your fence stays within them, unless you live in a state where shared fences are allowed on property lines and your neighbor agrees to the project. Failing to do this could result in having to remove the fence unexpectedly after a few years. Once you have squared the corners of the fence and marked the positions for the post holes, it is important to contact the utility company before digging to avoid any underground cables, wires, or pipes.

Step 1: Clear the Path for the Fence

Remove any vegetation in the area where the fence will be located. Dig up bushes and clumpy plants by the roots to prevent regrowth once the fence is built. Remember to obtain permission before clearing any plants on your neighbor’s property.

Step 2: Mark the Corner Points

Select a corner of your house or another permanent feature in your landscape as the starting point. Walk along the rough perimeter of the fence, using a tape measure to measure distances, and mark the positions of the corners with chalk.

Step 3: Create Batter Boards

Create batter boards by attaching one 1-by-2-inch stake to two others. When these two stakes are pounded into the ground, the third stake should extend horizontally between them. You will need two batter boards for each corner, except for the starting corner. Temporarily install one batter board behind each chalk mark, with one facing along one side of the fence and the other facing along the perpendicular side of each corner.

Step 4: Align the First Batter Board

Attach a mason’s string to the landscape feature you chose as the starting point and stretch it to the center of the batter board facing it. Extend a piece of wood perpendicularly from the center of the batter board and adjust the batter board until the string aligns with the piece of wood. If you are using a laser, align the laser with the wood extending from the batter board until the laser falls on the starting point.

Step 5: Ensure Square Corners

Extend another piece of wood from the center of the other batter board at that corner. Adjust the batter board until the two pieces of wood intersect at the chalk mark, and then further adjust the batter board until the angle between these intersecting pieces of wood measures 90 degrees using a carpenter’s square. Once the corner is squared, pound the stakes into the ground. Repeat this process for all the other corners.

Step 6: Mark the Post Positions

Stretch a mason’s string between the centers of all the batter boards to outline the perimeter of the fence. Use a tape measure to measure the positions for the posts and drive a stake at each point. The outside edge of the stake should touch the string. If you are using a laser, have an assistant set the stakes while you shoot the laser from the center of one batter board to another, ensuring that the outside edges of the stakes align with the laser beam.

Step 7: Position Posts in Line with the String or Laser

Ensure that each post hole is centered on the stake as you dig it. Keep the string in place and place each post in such a way that its outer edge barely touches the string when it is level. Alternatively, you can use a laser to confirm the alignment when positioning the posts. The laser should brush against the outer edge of each post, indicating that when the post is slightly angled outward, it intersects with the laser beam.

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