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Before you sign a home-improvement contract, verify the contractor’s license with the state or county authority that regulates the work, request proof of insurance, call references for similar projects, investigate complaints, compare written estimates with the same scope, and review a complete contract. A contractor’s claim that they are licensed or insured is only a starting point; you must check the underlying records and documents.
Requirements differ by state, county, city, trade, and project. Some jurisdictions do not license every type of contractor, and insurance rules, payment limits, contract language, and cancellation rights are not uniform nationwide. Use the workflow below for the location where the work will occur, then confirm local requirements with the appropriate government office.
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Set up a screening file before you compare contractors
Create one folder—digital or paper—for every contractor you are considering. Keeping the same information for each bidder makes differences visible and gives you a record if a dispute develops.
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Record the contractor’s legal identity
- Legal business name and any trade name used in advertising.
- Business address, phone number, and primary contact.
- License number, issuing jurisdiction, and the trade or classification shown on the license.
- Name of the person who will sign the contract.
- Names of subcontractors expected to perform major portions of the work, if disclosed.
Ask the contractor to provide this information in writing. A business card, website, or proposal that omits a legal name or license number is not enough to verify credentials. Use the exact spelling and number in your government lookup; small differences can identify a different business.
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Define the job before judging a bid
Write a plain-language description of the work, the materials or finishes you expect, the approximate start and completion window, and any work that must be coordinated with another trade. Licensing classifications and insurance needs can depend on the work being performed, so a vague project description makes a meaningful comparison impossible.
How do I verify a contractor’s license?
Confirm the license directly with the state, county, or other government authority responsible for the work location. The Federal Trade Commission advises consumers to consider licensed and insured contractors and to confirm a license rather than accepting a contractor’s statement. The right office and the kinds of work it licenses vary by jurisdiction.
1. Find the correct licensing authority
- Ask the contractor which government agency issued the license and what classification it covers.
- Check the official website for the state or county where the project will take place. If you do not know which office handles the question, the USAGov directory of state and territorial consumer-protection offices can help route you to the appropriate authority.
- Call the office when the online record is unclear. Ask whether the proposed work requires a license, registration, permit, or another credential in that locality.
Do not assume that a license is required for every trade or that a license from one state authorizes work in another. Local officials can explain the rule that applies to your address and project.
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2. Match the record to the contractor and the job
Search the government record using the legal business name and license number. Check that:
- The name on the record matches the name on the estimate and proposed contract.
- The status is current rather than expired, suspended, or otherwise inactive.
- The classification or work category covers the project you are hiring for.
- The address or responsible license holder is consistent with the information the contractor supplied.
Save a PDF, print the result, or note the date and time of the lookup. Government databases change, so retaining what you saw helps you show which record you relied on.
3. Resolve discrepancies before moving on
Stop and ask for an explanation if the number returns no result, belongs to another business, covers a different trade, or shows an inactive status. Contact the issuing agency yourself rather than relying on a screenshot supplied by the contractor. A legitimate explanation may be a recently changed business name or a database delay, but the authority—not the contractor—should confirm it.
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How to check a contractor’s insurance
Ask for proof of insurance before work begins. FTC guidance supports making this request but does not establish one nationwide coverage limit, a universal list of policies, or a single form that proves every possible claim will be covered. Legal requirements and suitable coverage depend on the location, project, business structure, and people performing the work.
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- Ask the contractor what insurance applies to the work and request current proof in writing.
- Compare the contractor’s legal name on the proof with the name on the license and estimate.
- Check the policy dates and ask whether the coverage will remain active throughout your project.
- Ask for the insurance agent’s or insurer’s contact information so you can verify that the document is current.
- Keep the document and your verification notes in the screening file.
A certificate or other proof is evidence of a policy document at a particular time; it is not a guarantee that every loss, worker, subcontractor, or circumstance will be covered. Ask the insurer or agent specific questions about the proposed work, and follow local advice about any coverage or documentation the project requires.
Questions to ask about gaps
- Does the policy identify the same business that will sign my contract?
- Are subcontractors covered by the contractor’s policy, or must each subcontractor provide separate proof?
- What should I do if the policy expires before the scheduled completion date?
- Which exclusions or conditions should a homeowner understand before work starts?
Do not invent a minimum dollar amount or tell a contractor that one type of policy is legally required everywhere. Have the local authority or a qualified insurance professional explain requirements for your jurisdiction and project.
How to check references, complaints, and reviews
References show how a contractor performed for particular customers; they do not guarantee future workmanship. Use several sources and look for consistent patterns rather than treating a star rating as proof.
Ask for relevant references
Request recent customers whose projects resemble yours in size, materials, age, and complexity. A list of names without permission to contact them is not useful. Tell the contractor you would like to speak with the references directly, then contact each person yourself.
Questions for former customers
- What work did the contractor perform, and when was it completed?
- Did the finished work match the written scope and materials?
- Did the crew keep the site reasonably safe and communicate schedule changes?
- Were there change orders, delays, damage, or unexpected costs? How were they handled?
- Was the final amount close to the estimate, and were payment requests consistent with the contract?
- Would you hire this contractor for a similar project?
Ask to see finished work when the owner is comfortable sharing it, but respect privacy and do not enter a property without permission. A reference who is enthusiastic about the result but vague about price, timing, or problem resolution may still reveal useful information when you ask follow-up questions.
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Look for complaints through local channels
Ask local home-builder associations and consumer-protection officials whether complaint information is available. Availability and record formats differ, and an absence of a public record is not a finding that no problem has ever occurred. Read any record carefully: identify the date, allegation, response, and resolution rather than counting complaints without context.
Use online reviews as one signal
Read reviews critically. Give more weight to recent, detailed accounts that describe a comparable project than to a single extreme rating. Look for repeated patterns involving communication, unfinished work, billing, or cleanup. Sudden bursts of highly similar reviews deserve caution. Reviews can add context, but they cannot replace a government license check, insurance verification, references, or a written contract.
Compare written estimates on an equivalent scope
Obtain more than one written estimate. The FTC recommends that an estimate describe the work, materials, completion date, and price; when bids differ considerably, ask why. The lowest number is not automatically the safest or least expensive choice if it omits necessary work or uses different materials.
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| Item to compare | Questions to answer |
|---|---|
| Scope | Does each estimate describe the same demolition, preparation, installation, cleanup, and testing? |
| Materials | Are brand, grade, size, finish, and quantity comparable, or is one bid using allowances? |
| Labor | Is labor included for every listed task, or are some activities excluded or billed separately? |
| Schedule | What start and completion dates or duration does each contractor state? |
| Price | Is the amount fixed, an estimate, or subject to stated allowances and change orders? |
| Payment terms | What deposit, progress payments, retainage, and final payment are requested, and when? |
| Responsibilities | Who obtains approvals, coordinates inspections, protects existing areas, and removes debris? |
If one estimate is far higher or lower, ask the contractor to identify the difference in scope, material, labor, schedule, or assumptions. Request a revised written estimate when the explanation changes the work. Keep the original rather than allowing an informal conversation to become the only record.
Do not use price as a credential
A low bid can reflect efficient planning, but it can also omit preparation, use lower-grade materials, or rely on allowances that later increase the price. A high bid may include work another contractor excluded. Compare what each contractor promises to deliver and how the contract handles changes before comparing totals.
Review the contract before signing
Do not let work begin on the strength of a verbal promise. Read a complete written contract, fill every blank, and keep a signed copy. Contract rules vary by state and locality, so use local consumer guidance for required language and payment limits.
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Verify the parties and project
The contract should identify the contractor’s name, address, phone number, and license number, along with your name and the property address. Confirm that these details match the government license record and the estimate. The document should state the estimated start and completion dates and describe the work and materials clearly enough to compare with the estimate.
Check money, changes, and completion terms
- Total price and what is included or excluded.
- Deposit and progress-payment amounts, due dates, and the event that triggers each payment.
- How a change in scope, material, or price must be proposed and approved in writing.
- Who pays for concealed conditions, disposal, or additional work, and how those costs are documented.
- Procedure for reporting defects, correcting incomplete work, and resolving a disagreement.
- Any promises about labor, materials, or completion that the contractor made during the sales process.
Cross out or complete blank spaces before signing. If a contractor says a missing term will be “handled later,” ask for the term in the contract instead. Preserve the final signed version, all attachments, estimates, insurance proof, and written changes together.
Understand conditional cancellation rights
The FTC describes a written three-business-day cancellation statement for some contracts signed in a home or somewhere other than the seller’s permanent place of business. This is conditional guidance, not a universal right for every home-improvement transaction. Ask your state or local consumer-protection office whether the rule applies to your contract, how the notice must be delivered, and what exceptions exist. Do not assume that a cooling-off period permits you to delay payment or begin work without following the required procedure.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Recognize pressure tactics before you commit
FTC warnings include a contractor who pressures you to decide immediately, demands everything up front, or accepts only cash. Some states limit down payments, but the limit is local rather than nationwide.
Pause when you see these signals
- You are told the price is available only if you sign immediately.
- The contractor refuses to provide a legal name, license number, written estimate, or insurance proof.
- You are asked to pay the entire price before work starts.
- Cash is the only accepted payment method or receipts are refused.
- The contractor discourages you from contacting references or government offices.
- The scope, materials, start date, or price changes verbally but not in the document.
A single warning sign does not prove fraud, but it is a reason to slow down and verify. Do not allow a claimed emergency, expiring discount, or request to sign blank paperwork to replace the checks above. Ask the local consumer-protection authority about lawful deposits and payment practices in your area.
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After completing the checks, compare contractors using the same evidence. The categories below are a practical synthesis of the FTC’s advice, not an official government scoring system.
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| Category | Evidence to record | Decision question |
|---|---|---|
| License | Issuing authority, number, status, classification, lookup date | Does the verified credential match this job and business? |
| Insurance | Proof provided, policy dates, verification contact, unresolved questions | Is current coverage documented for the project, with local requirements understood? |
| Work history | Similar completed projects and dates | Has the contractor done work like mine recently? |
| References | People contacted, answers, unresolved concerns | Do independent customers describe reliable work and communication? |
| Complaints and reviews | Sources checked, dates, recurring patterns, responses | Is there a pattern I need the contractor to explain? |
| Estimate | Scope, materials, schedule, price, exclusions | Am I comparing equivalent work rather than different assumptions? |
| Contract and payments | Signed terms, deposit, milestones, change-order process | Can I understand my obligations before work starts? |
Write down why you selected a contractor and which questions remain open. If two contractors are otherwise comparable, unresolved documentation or contract gaps are a reason to wait, not a reason to guess.
Keep records through the start of work
Before the crew arrives, place the following in one accessible folder:
- Government license lookup and any correspondence with the issuing office.
- Insurance proof and notes from the agent or insurer.
- Reference notes, complaint searches, and relevant review records.
- All written estimates, the signed contract, and approved change orders.
- Payment receipts and dated photographs of existing conditions.
- Emails or messages about schedule, scope, materials, damage, or delays.
Use written communication for decisions that affect price, timing, or scope. Keep a running payment total and compare each invoice with the contract milestone. If the contractor proposes a change, ask for the revised price and effect on completion before authorizing the work in writing.
What these checks can—and cannot—tell you
A license is not a workmanship guarantee
License verification establishes that the government record matches the contractor and shows the status and category recorded by that authority. It does not predict whether the crew will communicate well or deliver flawless work. That is why references, complaint information, a comparable estimate, and a precise contract are separate checks.
Insurance proof is not a promise that every loss is covered
Coverage depends on policy terms, exclusions, dates, the people performing the work, and the facts of a claim. Confirm what local officials and the insurer say applies to your project instead of treating a certificate as universal protection.
References and ratings are evidence, not guarantees
Past customers can describe their own experience, but no reference can guarantee future performance. Recent, comparable projects and repeated patterns are more informative than one testimonial or one rating.
Make the hiring decision only after the file is complete
Proceed when the contractor’s identity and license have been verified with the proper authority; current insurance documentation has been requested and questions resolved; references and complaint information have been checked; estimates have been compared on the same scope; and every material term appears in a signed contract. If any of those items remains unclear, delay signing and obtain an answer from the contractor or the relevant local authority. A deliberate pause is less costly than discovering after work begins that the person, coverage, scope, or payment terms were not what you understood.
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