Key Takeaways
- Verifying a contractor's license and insurance protects you from liability and financial risk.
- Asking for references and checking permit history reveals how a contractor actually operates.
- A written contract with clear scope, timeline, and payment terms is non-negotiable.
- Knowing who does the physical work — employees or subcontractors — affects your oversight.
- Cheap bids often signal hidden costs, unlicensed labor, or skipped steps.
Summary
18 items · 20–40 minutes
Why Vetting a Contractor Matters Before Signing Anything
Hiring a contractor is one of the higher-stakes decisions a homeowner makes. Unlike buying a product you can return, a poorly executed repair can compromise your home's structure, trigger code violations, or void your homeowner's insurance — consequences that unfold long after the crew packs up. The questions you ask during the interview phase are your primary filter.
This checklist is designed to help you evaluate any contractor — whether you're repairing a roof, replacing plumbing, or undertaking a larger renovation — using consistent, objective criteria. Work through the questions systematically rather than relying on gut feeling alone.
For context on which projects typically require official permits and inspections, see what makes a repair permit-required before you meet with any contractor.
State Contractor License Lookup
Verify that a contractor holds a current, valid license in your state before any work begins.
Certificate of Insurance
Request this document directly from the contractor's insurer to confirm general liability and workers' compensation coverage.
Local Building Department Website
Check permit history for a contractor's past projects and confirm permit requirements for your specific job.
Written Contract Template
Use a standard home repair contract as a baseline to ensure scope, payment schedule, timeline, and warranty terms are all documented.
Better Business Bureau or State AG Complaint Database
Search a contractor's business name for unresolved complaints or disciplinary actions.
The Contractor Vetting Checklist
Use the groups below during or immediately after your initial consultation. Bring a printed copy or use your phone. Contractors who are experienced and reputable will answer these questions without hesitation — reluctance or vague answers are themselves informative.
Credentials and Legal Standing
Permits and Code Compliance
Experience and References
Subcontractors and On-Site Supervision
Contract, Scope, and Payment
Low Bids Deserve Extra Scrutiny
A bid significantly below others isn't necessarily a deal — it may reflect unlicensed labor, skipped permits, inferior materials, or a contractor who plans to request change orders once work has begun. When comparing bids, ask each contractor to explain specifically where their pricing differs. A complete, professional bid should itemize labor, materials, and contingency clearly.
If a contractor will be using subcontractors for portions of the work, your questions about licensing and insurance apply to those workers too. Learn more about working with subcontractors on a repair job so you understand who's accountable for the actual labor.
The process of evaluating a contractor shares some logic with other high-stakes decisions. The broader framework in questions to ask before making any large purchase applies here — pressure-test commitments before you hand over money.
What to Do With the Answers
Collecting answers is only useful if you act on them. Once you've spoken with at least two or three contractors, compare responses side by side. Pay attention to consistency: does the contractor's explanation of the process match what their references describe? Does their bid reflect the actual scope you discussed, or does it leave gaps that could become change orders later?
A contractor who pulls permits, carries current insurance, provides verifiable references, and puts everything in a detailed written contract is demonstrating professional standards — not doing you a favor. That baseline should be your minimum threshold, not a bonus.
Never Skip Independent License Verification
A contractor can show you an authentic-looking license document that is expired, suspended, or issued in a different state. Always verify license status directly through your state's official contractor licensing board website — not through a document the contractor provides. Working with an unlicensed contractor can expose you to significant legal and financial liability if something goes wrong, and may affect your homeowner's insurance coverage.
For projects that involve major upgrades rather than repairs, the questions shift slightly toward scope management and design decisions. The questions to ask before any major home upgrade begins guide covers that angle in more depth.