The Golden Rule
If it requires a permit, it requires a professional. This simple rule will keep you safe and legal for most home repair decisions.
Never DIY These Repairs
1. Electrical Panel Work
Risk: Electrocution, house fire Why: Working with live 200-amp service can kill instantly. Improper wiring is the #1 cause of residential fires. Always hire: Licensed electrician
2. Gas Line Work
Risk: Explosion, carbon monoxide poisoning Why: Even a small gas leak can be catastrophic. Gas work requires specialized training and testing equipment. Always hire: Licensed plumber or gas fitter
3. Structural Changes
Risk: Building collapse, code violations Why: Load-bearing walls, foundation work, and structural modifications require engineering calculations. Always hire: Licensed contractor + structural engineer
4. HVAC Refrigerant Work
Risk: Chemical burns, environmental fines Why: Handling refrigerants requires EPA Section 608 certification. Improper handling is a federal offense. Always hire: EPA-certified HVAC technician
5. Roof Replacement
Risk: Falls (leading cause of DIY injury death), voided warranty Why: Professional roofers have safety equipment, insurance, and manufacturer certifications that validate warranties. Always hire: Licensed roofing contractor
6. Asbestos or Lead Paint Removal
Risk: Cancer, lead poisoning Why: Disturbing these materials without proper containment spreads toxic fibers/dust throughout your home. Always hire: Certified abatement contractor
Safe to DIY (With Research)
| Project | Difficulty | Savings vs. Pro |
|---|---|---|
| Painting interior walls | Easy | 60–70% |
| Replacing light fixtures | Easy | 70–80% |
| Installing a toilet | Medium | 50–60% |
| Replacing faucets | Medium | 60–70% |
| Patching drywall | Easy | 80–90% |
| Installing shelving | Easy | 90% |
| Replacing door hardware | Easy | 80–90% |
| Caulking and weatherstripping | Easy | 90% |
The Hidden Costs of Bad DIY
- Failed inspections — $500–$2,000 to redo work
- Insurance denial — Unpermitted work may void coverage
- Resale issues — Buyers' inspectors flag unpermitted work
- Injury — ER visits average $2,200 (without surgery)
- Water damage — Average claim is $11,000
When in Doubt, Get a Quote
Getting a professional quote is free and takes minutes. You might be surprised — many jobs cost less than you'd expect when done by an efficient pro with the right tools.
Submit a request on our platform to get free quotes from licensed professionals in your area.