In the age of YouTube, it's tempting to try fixing cracks yourself. But when it comes to your home's structure, DIY mistakes can be catastrophic.
What You Can DIY
Minor hairline shrinkage cracks in concrete floors can be filled with epoxy. Grading your yard (adding dirt) is also a safe DIY project.
When to Call a Pro
Any structural movement (bowing walls, sinking footings) requires engineered hardware like helical piers. These require hydraulic equipment and torque monitoring that DIYers simply don't have access to.