Common signs that indicate a need for fence post repair or replacement include leaning or tilting posts, posts that are loose or wobbling, and visible damage such as cracking, rot, or decay. Additionally, if the posts show signs of severe rust or corrosion (in the case of metal posts), or if they are no longer providing proper support for the fence panels, repair or replacement may be necessary. If you notice gaps or instability in the fence line, it’s important to address these issues promptly to prevent further damage and maintain the integrity of your fence.