20 Essential Questions to Ask Before Hiring Any Contractor

The best contractor interview is not a quiz. It is a short conversation that shows whether the contractor understands your project, communicates clearly, and can explain risk before the contract is signed.

This expanded question list is for bigger projects: remodels, roofs, HVAC replacements, ADUs, electrical panels, plumbing projects, foundation work, and anything that involves permits or multiple trades. For small repairs, you may not need all 20 questions. For expensive work, you probably do.

The 20 Questions to Ask

| Question | What a Good Answer Should Clarify |

| --- | --- |

| 1. What license classification covers this work? | Legal fit for the scope |

| 2. Is your CSLB license active today? | Current status |

| 3. Who signs the contract? | Correct legal business |

| 4. Who will be on site? | Supervision and crew structure |

| 5. Will you use subcontractors? | Trade responsibility |

| 6. Who pulls permits? | Legal and inspection process |

| 7. What inspections are expected? | Schedule and compliance |

| 8. What is included? | Written scope |

| 9. What is excluded? | Avoids assumptions |

| 10. What allowances are included? | Material budget realism |

| 11. What hidden conditions could change price? | Risk planning |

| 12. How are change orders approved? | Cost control |

| 13. What is the payment schedule? | Progress-based payments |

| 14. What insurance applies? | Job-site risk |

| 15. What warranty is written? | Post-job support |

| 16. How will the site be protected? | Floors, landscaping, dust |

| 17. Who handles cleanup? | Disposal and daily condition |

| 18. What could delay the project? | Realistic timing |

| 19. Can I see similar local work? | Relevant experience |

| 20. How do we communicate during the job? | Process and expectations |

Use the questions that fit your project instead of reading them like a script.

Questions About License and Responsibility

Start with license, business name, and supervision. If the contractor cannot clearly explain who is legally responsible for the work, do not move to price yet.

Helpful links:

• How to verify a California contractor license
• What CSLB classifications mean
• Bonds and insurance guide

Questions About Scope and Price

Scope questions protect both sides. A contractor should be able to say what is included, what is excluded, and what could change after walls, floors, roofs, or trenches are opened.

Ask for allowances on materials that are not selected yet. A low allowance can make a bid look cheaper than it really is.

Questions About Permits and Timing

Permits are not just paperwork. They affect inspections, schedule, and legal responsibility.

Ask:

• Which permit office has jurisdiction?
• Who prepares drawings if needed?
• What inspections are expected?
• What happens if the inspector requires a correction?
• How will inspection timing affect the schedule?

Read our permit guide for larger work.

Questions About Communication

Projects usually get stressful when nobody knows who decides, who approves changes, or when the next update is coming.

Before signing, ask who your day-to-day contact is, how often updates are sent, whether photos are provided, and how urgent issues are handled.

Use our contractor search or browse general contractors, plumbers, electricians, and HVAC contractors.

The Bottom Line

Good questions make vague bids harder to hide behind. Ask about license, scope, permits, payment, changes, insurance, schedule, and communication before signing. A good contractor will not fear specific questions because specific answers make the job easier.