Hire a contractor when renovations involve structural changes, electrical wiring, plumbing, or require permits. These projects carry risks that DIY efforts rarely manage well, risking inspection failures and sale delays. Licensed pros protect your timeline and budget by complying with codes and managing complex work efficiently. For cosmetic updates like painting or simple staging, DIY can save money. Correctly choosing when to hire ensures your renovation boosts home resale value without jeopardizing your sale.