When it comes to home improvements and repairs, the do-it-yourself (DIY) approach can be tempting—it’s often seen as a way to save money and take personal pride in one’s accomplishments. However, there are certain projects where DIY might not be the best option. These tasks can be complex, require special tools or knowledge, or might even be dangerous. Here are 16 home improvement projects that are typically best left to professionals.

1. Electrical Work: Any job that involves dealing with electrical wiring can be hazardous. Professional electricians have the training and equipment to handle these situations safely.

2. Plumbing: Major plumbing projects, such as relocating pipes or installing a new shower, should typically be done by a licensed plumber to avoid leaks and water damage.

3. HVAC: Installing or repairing heating, ventilation, and air conditioning systems requires specialized knowledge and certifications.

4. Roof Repairs: Working on a roof not only poses a significant fall risk but also requires specific techniques to ensure water doesn’t leak into your home.

5. Asbestos Removal: Asbestos is highly toxic, and its removal is strictly regulated. Professionals have the gear and training to remove it safely.

6. Gas Appliances: Installing or repairing gas lines or appliances is risky due to the explosive nature of natural gas.

7. Structural Alterations: Removing or altering walls, especially load-bearing ones, can affect your home’s structural integrity.

8. Window Replacement: Properly installing windows requires precision to prevent drafts and water leaks.

9. Tree Removal: Large trees can cause injury or major property damage if not removed correctly.

10. Major Landscaping: While planting flowers is straightforward, major landscaping often involves heavy machinery and an understanding of land grading.

11. Mold Remediation: Mold spores can be harmful if inhaled, so removing large mold infestations requires professional care.

12. Pest Extermination: Some infestations may require potent chemicals or strategies that are best handled by an exterminator.

13. Lead Paint Removal: Like asbestos, lead-based paint is dangerous and requires careful handling during removal.

14. Foundation Repairs: Foundation work can be complex and impact the entire structure of your home if not done correctly.

15. Septic Systems: Replacing or repairing septic systems should be handled by experienced technicians due to potential health hazards.

16. Major Electrical Upgrades: Projects such as upgrading your home’s electrical panel are both complicated and dangerous without proper expertise.

While short-term savings from DIY efforts can seem attractive, improperly completed projects may result in higher costs down the line—from correcting mistakes to repairing unforeseen damage—and can also pose safety risks. Therefore, for these significant home improvements and repairs, it pays in the long run to hire skilled professionals who possess the necessary tools, knowledge, or certifications to ensure the job is done right the first time around.