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30 Questions to Ask Contractors Before Hiring

Use these 30 numbered cards to prepare a contractor discussion, request records and identify unresolved questions. Answers alone do not guarantee project quality or an outcome.

Originally published January 9, 2026 (Pacific). Reviewed October 20, 2026.|10 min read
By the BuildFolio Team Manual review checklist

Top 10 Must-Ask Questions

1) License number? 2) Insurance certificates? 3) How long in business? 4) Who manages daily work? 5) Do you use subs? 6) What’s the timeline? 7) Payment schedule? 8) How handle changes? 9) Warranty terms? 10) Can I have references?

Licensing & Credentials

1. What is your contractor’s license number?

Ask which license applies to this scope and location. Record the license number, issuing authority, scope and verification date; check those details with the relevant authority.

2. Can I see your general liability insurance certificate?

Request the insurer, named insured, coverage limits, endorsements and policy dates. Ask the insurer and applicable project authority which coverage applies; do not assume one national minimum.

3. Do you carry workers’ compensation insurance?

Request the applicable workers’ compensation records and ask about exclusions and the parties doing the work. Verify requirements and coverage with the relevant authority or issuer rather than treating a certificate as a guarantee.

4. Are you bonded?

If a bond is required or agreed, request its issuer, type, amount, beneficiary and claim conditions. Verify that it applies to the actual scope with the issuer.

Experience & Background

5. How long have you been in business?

Record the business history and ask for relevant project records. Years in business alone do not establish stability, quality or current availability.

6. How many projects like mine have you completed?

Experience with your specific project type matters more than general experience.

7. Can I see photos of similar completed projects?

Request project photos with the actual scope, date and permission to share. Photos alone do not verify workmanship or prove that the same team will do your project.

8. Can you provide 3-5 recent references?

Ask for projects completed in the last 6-12 months.

Project Management

9. Who will be on-site daily managing the work?

Know your point of contact. Owner presence varies by company size.

10. Do you use subcontractors? For what work?

Common for specialty trades. Ask about vetting and insurance requirements.

11. How many other projects will you have running during mine?

Ask who supervises your project and how staffing or concurrent commitments affect the proposed schedule. A project count alone does not establish attention or quality.

12. What are your working hours?

Agree proposed working hours, access and notification arrangements. Check any applicable site or local restrictions rather than assume one standard workday.

Timeline & Schedule

13. When can you start?

Ask for a proposed start date and the staffing, materials and approvals it depends on. A wait time alone is not proof of quality or a reason to reject a contractor.

14. How long will the project take?

Get specific duration, not vague estimates.

15. What could cause delays?

Weather, permits, material availability, discoveries. Understand the risks.

16. Will you provide a written schedule with milestones?

Helps track progress and tie payments to completion.

Payment & Pricing

17. What’s your payment schedule?

Request the written payment amounts, due events, deposit terms and completion criteria. Check the actual agreement and applicable rules before paying.

18. What deposit do you require?

Ask for the deposit amount, purpose and refund or cancellation terms. Verify any applicable limit with the relevant authority and the actual contract; no universal maximum is given here.

19. How do you handle change orders?

Changes should be documented in writing with pricing before work proceeds.

20. What payment methods do you accept?

Agree accepted payment methods, any fees and itemized receipts. Reference each payment to the project records; a payment method does not replace a written record.

Get It in Writing

Keep a written record of answers and clarify which commitments form part of the actual agreement. Ask a qualified adviser about the terms and records relevant to a dispute.

Contract & Warranty

21. Do you provide a written contract?

Request a written agreement covering scope, price, payments, changes and responsibilities. Resolve open questions and check applicable requirements with the relevant authority or a qualified adviser before hiring.

22. What warranty do you offer on labor?

Request the actual labor-warranty issuer, term, start date, covered work, exclusions and claim contact. Do not assume a standard duration.

23. How do warranty claims work?

Understand the process before you need it.

24. What happens if there’s a dispute?

Ask for the contract’s dispute process, notice contacts, deadlines and applicable forum. A qualified adviser can help you assess the terms for your situation.

Materials & Quality

25. What brands/materials will you use?

Record the proposed brands, model numbers, specifications and substitution-approval process. Compare the actual product with project requirements; a brand name alone does not establish suitability.

26. Where do you source materials?

Ask for the supplier and actual product specifications, availability and warranty or return terms. A supplier category alone does not guarantee quality.

27. Can I choose or upgrade materials?

Understand options and price implications.

Permits & Compliance

28. Will this project require permits?

Describe the actual project scope to the applicable permitting authority. Record any required permits, inspections, decision source and date; mark the requirement unknown until verified.

29. Who pulls the permits – you or me?

Record who will apply, pay fees and arrange inspections. Confirm those responsibilities against the contract and applicable authority requirements.

30. Are permit costs included in the quote?

Know what’s included to avoid surprise charges.

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