Contact your local building code association to find out if you need permission to erect your fence.
Determine the best place to install your fence post. If you're putting up fencing panels, use a tape measure to work out where you need to anchor your post.
Dig a hole measuring at least 6 inches wide and 2 feet deep for larger fence posts over 5 feet tall using a post-hole digger. If your post is smaller, you can dig a smaller hole. Consult your post manufacturer's instructions for recommended anchoring guidelines. Use a tape measure to make sure your hole is of the correct dimensions.
Place your post in the middle of your hole and shovel in your concrete.
Cover your filled hole with earth to add support to your post.
Use a bubble level to make sure your post is plumb. You can alter the position of your post while the concrete is still wet.
Place four wooden blocks against your post at right angles and secure these in place with bricks to create a brace.