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Before you sign, verify the contractor’s legal identity, required license or registration, insurance, permit plan, comparable work, references, complaint history, written scope, price, and schedule. Licensing and permit rules are set by the state, county, city, and type of work, so confirm the requirements for the property address with the responsible public agencies rather than relying on a contractor’s assurances.
A practical order is: identify the business, check credentials, confirm insurance, ask the building department about permits, investigate complaints, call references for similar jobs, inspect past work when possible, and compare detailed written bids. Put the agreed scope, materials, cost, dates, and responsibility for permits in the contract.
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Why verification matters before you hire
A polished estimate or a long reference list does not establish that a contractor is authorized to perform your work or can deliver it as promised. Verification gives you independent evidence before money, access to your home, and your project schedule are at risk.
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1Repair Windows errors before they cause bigger problems2Scan for outdated or missing drivers - takes under a minute3Clear out junk files and repair common Windows errorsThe Federal Trade Commission (FTC) summarizes the basic standard this way: “Consider only contractors who are licensed and insured. Check with your state or county government to confirm a contractor’s license, and ask for proof of insurance.” Read the FTC’s current consumer guidance at How To Avoid a Home Improvement Scam.
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Use the steps below as a U.S. homeowner’s process. A license may not be required for every trade in every state, and a permit may depend on the location, building type, project value, and exact work. The public agency that governs your address is the final source for those requirements.
Step 1: Identify the contractor precisely
Start with an identity record, not just a first name and mobile number. Ask for the information in writing and make sure it matches the name on the estimate, contract, insurance document, invoices, and any license record.
- Legal business name and any trade name used with customers.
- Business address, telephone number, email address, and website, if applicable.
- State, county, or municipal license or registration number, where applicable.
- Name and contact information for the person responsible for the contract.
- The names of subcontractors or specialty trades expected to work on the project.
The FTC advises that a written contract should include contractor contact information and a license number where applicable. If the person soliciting the work will not identify the legal business or says the contract will be issued by a different entity, ask for a clear explanation before proceeding.
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A general contractor may use subcontractors for electrical, plumbing, roofing, HVAC, excavation, or other specialized work. Ask which portions will be subcontracted, who will supervise them, and whether each trade requires its own credential. Confirm required credentials for subcontractors rather than assuming the general contractor’s license covers every task. The FTC’s contractor guidance also recommends asking about subcontractors; its brochure is available at Hiring a Contractor.
Step 2: Verify the license or registration with the proper authority
Do not treat a license number printed on a business card as proof that the credential is current or applies to your project. Ask which agency regulates the trade at the property address, then search that agency’s official records or call its office.
Find the agency that governs your address
Depending on the work and location, the relevant authority may be a state licensing board, county office, city department, or local building department. Some states license general contractors but leave certain specialty trades to local governments; others use registration, certificates, or no statewide license for particular work. The FTC notes that licensing laws vary, so there is no single national contractor database that replaces local verification.
- Describe the project and property address to the state, county, or city office.
- Ask whether a license, registration, permit, or specialty credential is required for each trade involved.
- Search the official record using the contractor’s exact legal name and license number.
- Check the status, expiration date, classification, business name, and any public disciplinary information.
- Save a dated screenshot, printout, or written confirmation for your project file.
The South Carolina Department of Consumer Affairs illustrates this type of state-level approach in its Hiring a Contractor and Avoiding Repair Scams resources. Its specific tools and rules apply to South Carolina; residents elsewhere should use their own state or local authority.
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Match the credential to the work
A credential can be valid yet still not cover your project. Confirm that its classification includes the work you are buying, such as structural remodeling, roofing, plumbing, electrical, or HVAC. Ask whether the license applies to the jurisdiction where the property sits and whether the named business is the same entity signing your contract.
What a failed lookup means
An unlisted, expired, mismatched, or restricted credential is a stop-and-clarify issue. Ask the licensing agency whether the contractor may legally perform the described work and whether a different licensed party must contract for it. Do not accept a promise that the paperwork will be corrected after work begins.
Step 3: Confirm insurance before anyone starts
Request a current certificate or other proof of insurance and verify that it covers the contractor and the planned work. Ask who is insured, the policy dates, and whether subcontractors carry their own coverage or are covered under the contractor’s policy.
Federal consumer guidance does not establish a universal coverage amount or one policy type for every project. Do not invent a dollar threshold; ask your local authority, insurance professional, or attorney what the project and jurisdiction require. If the document is unclear, contact the insurer using contact information you obtain independently, not only a phone number supplied verbally by the contractor.
- Confirm the named insured matches the legal business in your contract.
- Check that coverage remains in force through the expected work period.
- Ask how claims involving property damage, injuries, or subcontractors are handled.
- Keep the document and your verification notes with the contract.
Insurance is not a substitute for a license, permit, or competent work. It is one independent check in the hiring decision.
Step 4: Ask the building department about permits for your exact project
Permit obligations depend on the address and the work. Before accepting a bid, give the local building department a concise description of the project: for example, moving walls, adding a bathroom, replacing a service panel, changing a roof, building an addition, or doing only cosmetic repairs. Ask which permits, plan reviews, inspections, and approvals apply.
Get permit responsibility in writing
Your contract should state who will apply for each required permit, pay the fees, schedule inspections, provide approved plans, and give you copies of approvals and final sign-offs. Also state what happens if the department requires a design change or additional inspection.
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The FTC flags a contractor asking the homeowner to obtain permits as a possible scam sign. That is a reason to ask more questions and verify the arrangement locally, not automatic proof of wrongdoing: some jurisdictions or project types may place an application task on the owner, while others expect the licensed contractor to obtain it. Follow the building department’s instruction and document the answer.
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Ask how you can see the permit number and inspection schedule. Do not cover work that must be inspected until the required inspection has occurred. At completion, obtain the final inspection or certificate documentation that your jurisdiction issues. A contractor’s statement that “no permit is needed” should be confirmed with the building department, especially for structural, electrical, plumbing, mechanical, roofing, addition, or change-of-use work.
The Consumer Financial Protection Bureau’s guidance on selecting contractors after a disaster also emphasizes establishing permit requirements and responsibility with local officials. The advice is useful for ordinary renovations, while its insurance-proceeds and mortgage-servicer information applies only to disaster-recovery situations. See How can I find and work with contractors to rebuild after a disaster?
Step 5: Check complaints and business history
Search more than one channel and treat every result as a lead to investigate, not a verdict.
- Search the state licensing board or local licensing office for disciplinary actions, status changes, and complaint information.
- Check the state or local consumer-protection agency and any official complaint-search tool.
- Look for relevant information from a local builders’ association or trade organization.
- Search the exact business name, owner name, telephone number, and address with terms such as complaint, review, or scam.
- Compare dates, project types, and responses rather than counting stars or isolated comments.
The FTC recommends checking government sources and searching for complaints; the South Carolina Department of Consumer Affairs provides an example of combining licensing and consumer-protection resources. A complaint may be mistaken, unresolved, or unrelated to your project, while a clean search cannot prove future performance. Ask the contractor for a factual explanation of significant, relevant disputes and compare it with official records.
Step 6: Verify references from comparable projects
Ask for recent customers whose projects resemble yours in size, materials, complexity, and location. A kitchen renovation reference is more useful for a kitchen renovation than a list consisting only of small repairs, and a roofing reference should identify the roof type and scope.
Questions to ask every reference
- Was the work similar to the project I am planning, and may I see it?
- When was the work completed, and did the contractor finish on schedule? If not, what happened?
- Were the materials and workmanship as promised?
- Did the price change? Were the reasons and additional costs explained before the extra work?
- Did the crew communicate clearly and keep the site orderly?
- Were permits or inspections part of the project, and how were they handled?
- Would you hire this contractor again?
Ask open questions first, then request examples. “Did you like the work?” often produces a polite yes; “What was the most difficult part of the project, and how did the contractor respond?” can reveal how problems were handled.
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Confirm that the reference is genuine and relevant
Call the reference using the number supplied, but also verify that the person is connected to the address or project when practical. Ask whether the work is complete, who selected the materials, and whether any warranty or punch-list items remain. Be cautious if every reference is a friend, employee, current customer who cannot discuss results, or a project unrelated to yours.
Inspect completed or active work when possible
With the owner’s permission, view a finished project or an active job. Look for details relevant to your scope: straight and consistent finishes, clean transitions, protection of adjacent surfaces, orderly materials, safe work areas, and evidence that promised products were installed. A site visit is not a substitute for a professional inspection, but it lets you compare the contractor’s description with observable work.
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Ask the contractor for permission before visiting any customer’s property and respect the customer’s privacy. Do not enter an active site without the owner’s or contractor’s approval.
Step 7: Compare written bids, not just totals
Obtain multiple written estimates when the project allows. The bids should describe the same work so that a low number is not simply missing demolition, disposal, preparation, permits, finishes, or labor.
| Comparison point | What to require in each bid | Why it matters |
|---|---|---|
| Scope | Rooms, quantities, demolition, preparation, installation, cleanup, and exclusions | Reveals whether contractors priced the same job |
| Materials | Manufacturer, model or grade where known, quantities, allowances, and who selects products | Prevents an inexpensive substitute from being compared with a specified product |
| Price | Labor, materials, taxes, disposal, permit fees, allowances, and change-order method | Shows what is included and how extra costs arise |
| Timing | Estimated start, substantial completion, working hours, and weather or supply assumptions | Sets a realistic schedule without treating an estimate as a guarantee |
| Responsibility | Contractor and subcontractors, permits, inspections, design documents, and site protection | Assigns tasks before a dispute occurs |
Ask each contractor to explain major price differences. A bid that is dramatically lower may omit necessary work; a higher bid may include better materials, more preparation, or a fuller permit and cleanup plan. Do not choose solely by the lowest price.
Record allowances and changes
An allowance is a placeholder for an item not yet selected, such as tile, fixtures, or appliances. Ask what quantity and price are assumed and how the contract handles a selection above or below the allowance. Require written change orders that describe the added or deleted work, revised price, and schedule effect before the work proceeds.
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Step 8: Make the contract reflect what you verified
Before signing, check that the contract names the same business you verified and incorporates the promises made during bidding and reference calls. At minimum, record:
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- Legal business name, address, telephone number, license or registration number where applicable, and the owner or authorized signer.
- Detailed scope, drawings or specifications, brands or grades of materials, and explicit exclusions.
- Total price, payment schedule, deposits, allowances, taxes, disposal, and permit fees.
- Estimated start and completion dates, working hours, and procedures for delays.
- Who obtains permits, schedules inspections, supplies plans, and provides final approvals.
- Names or roles of subcontractors and responsibility for their work.
- Change-order procedure requiring written approval before extra work.
- Warranty terms, punch-list process, cleanup, protection of your property, and dispute procedures.
- Any cancellation or cooling-off rights that apply under local law.
The FTC and CFPB both emphasize putting promises about scope, labor and material costs, timing, and applicable rights in writing. Local law may impose additional contract language, disclosure, payment, or cancellation rules; confirm those requirements with your jurisdiction or a qualified local adviser.
A practical contractor comparison worksheet
Use one row for each contractor and attach the supporting documents. This is an evidence checklist, not a universal scoring formula.
| Evidence axis | Record | Decision question |
|---|---|---|
| License or registration | Agency, number, classification, status, expiration, date checked | Is the credential current and appropriate for this work and address? |
| Insurance | Insured name, policy dates, insurer contact, coverage description | Does proof cover the contractor and planned work during the project? |
| Comparable experience | Project type, scale, age, materials, photos or site visit | Has the contractor completed this kind of work recently? |
| References | Customer names, dates, answers about quality, timing, price, communication | Do independent customers describe results and problem handling consistently? |
| Complaints and history | Official searches, relevant findings, contractor explanations | Are there unresolved patterns that require a different choice or more investigation? |
| Permits | Building-department answer, permit numbers, assigned responsibility | Is the plan legal, documented, and assigned to a specific party? |
| Written bid and contract | Scope, materials, price, schedule, exclusions, change-order terms | Can two bids be compared without guessing what is included? |
Keep copies of the license lookup, insurance proof, permits, bids, references, emails, and signed change orders in one folder. Record the date of each verification because license status, insurance, and permit information can change.
Warning signs that require a pause
- The business will not provide a legal name, address, license number where applicable, or written estimate.
- The license record does not match the contracting entity, is expired, or does not cover the trade.
- Insurance proof is missing, unreadable, expired, or names another business without an explanation.
- The contractor dismisses the building department’s permit requirements or insists you conceal work.
- You are pressured to obtain permits without understanding the local rule or to sign immediately.
- References cannot be contacted, are unrelated to your project, or refuse permission for any reasonable verification.
- The bid is substantially lower because important scope, materials, preparation, permits, or disposal are absent.
- Extra work is requested verbally, with no written price or schedule change.
- Complaints show a repeated, relevant pattern and the contractor cannot provide a credible explanation.
None of these signs alone proves fraud or poor workmanship. They indicate that you should stop, verify with the responsible agency, obtain clarification in writing, or select another contractor if the issue remains unresolved.
What to do when a contractor fails a check
If the license or permit answer is unclear
Pause the contract. Call the licensing board or building department with the exact project description and ask what a properly authorized contractor must do. Request the answer in writing when available. Do not let work proceed on the assumption that a permit or credential can be fixed later.
If a reference reports a problem
Ask what happened, when it happened, how much money was involved, and whether the issue was corrected. Compare the account with the contract, official records, and other references. A single disputed event may need context; repeated unresolved issues involving similar work deserve substantial weight.
If bids cannot be compared
Send every bidder the same scope and request an itemized revision. Ask specifically about omissions such as demolition, structural engineering, finish materials, permit fees, inspection corrections, disposal, and final cleanup. If a contractor will not explain a major price difference, do not rely on the total alone.
If the contractor wants to begin before paperwork is complete
Do not authorize work that requires a license, permit, inspection, insurance, or signed change order until the required documentation is in place. Keep communications factual and written, and seek advice from the relevant local agency or a qualified attorney if money or property is at risk.
Final pre-signing checklist
- I have the contractor’s exact legal name and contact information.
- I checked the required state, county, or city license or registration with the responsible authority.
- The credential matches the work, business entity, and project location.
- I received and verified current proof of insurance for the contractor and planned work.
- The building department told me which permits and inspections apply.
- The contract states who obtains permits, schedules inspections, and supplies final approvals.
- I checked official complaint or disciplinary sources and investigated relevant findings.
- I spoke with references for comparable projects and asked about quality, materials, timing, cost changes, communication, permits, and re-hiring.
- I inspected comparable completed or active work when practical and authorized.
- I compared written scope, materials, price, exclusions, schedule, and change-order terms.
- The signed contract includes applicable cancellation rights, warranties, cleanup, and dispute terms.
- I have saved every verification record and will require written approval for changes.
When a contractor passes these checks, you still need to supervise decisions and document the job. Verification cannot guarantee a perfect project, but it replaces assumptions with records you can evaluate before signing.
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