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One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchBefore you sign or pay, verify four things independently: the contractor is legally authorized for your work, the business identity matches every document, insurance and workers’ compensation are active, and the promised schedule is written with clear remedies for delays. A license lookup, a current certificate of insurance, written bids, and a detailed contract give you a defensible record if the project changes or a dispute arises.
Why all four checks matter
A contractor can have a professional-looking estimate and still lack the license, coverage, crew, materials, or time needed for your project. A contractor license addresses authorization and trade classification; it does not prove that a company carries liability insurance, covers employees, or can start when promised. Likewise, a certificate of insurance does not prove that the person who gave you the bid is the named insured or that the policy covers your location and type of work.
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Treat verification as a chain of matching records. The legal entity on the license should match the entity on the estimate, contract, invoices, and insurance certificate. Dates, scope, payment milestones, permits, and change-order rules should be written before work starts. Requirements and exemptions vary by state, county, city, trade, project value, and business structure, so use the government office that has authority where the work will occur.
1. Find the authority that regulates this work
Start with the state contractor-licensing board
Search the official state contractor-licensing board, not a directory supplied by the contractor. Use the exact legal business name and the license number shown on the proposal. Save or print the result showing the license status, classification, expiration date, and disciplinary history when the database provides it. The Federal Trade Commission advises consumers to check with their state or county government to confirm a contractor’s license.
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Read the classification carefully. A license for one trade may not authorize roofing, electrical, plumbing, structural, or other specialized work. Some states license only certain trades or project values, while others leave particular work to local authorities. If the database says the license is inactive, expired, suspended, restricted, or unrelated to your scope, stop and ask the licensing authority what is required before signing.
Check county and city requirements
If the trade is locally regulated, exempt from state licensing, or subject to a local business-license rule, contact the county or city building or licensing office. Ask whether the contractor must hold a local license, whether permits must be pulled by the contractor, and whether a state license is still required for any part of the work. A business license is separate from a contractor license in some jurisdictions; having one does not replace the other.
Save evidence of the lookup
Record the lookup date, web address or office contacted, search terms, and the result. Keep a PDF or screenshot with the license number, legal name, classification, status, expiration, and any disciplinary entries. Online records can change, and a saved result shows what you relied on when you hired the contractor.
2. Match the contractor’s identity across every document
Compare the legal name and address
Write down the exact legal name, business address, license number, and any trade name from the license record. Compare those details with the estimate, contract, insurance certificate, invoices, permit application, and payment instructions. A company may use a public-facing trade name that differs from its registered entity, but the relationship should be documented and consistent.
A mismatch is a reason to pause, not a minor clerical issue. Ask who will sign the contract, who will employ the crew, who will obtain permits, and who is insured. Do not make a deposit until the contractor explains the discrepancy in writing and the licensing and insurance records support that explanation.
Check registration and authority to sign
Verify the business registration with the state corporate or secretary-of-state office when available, and check any required local business license. Confirm that the person signing can bind the business named in the contract. If a salesperson, project manager, or separate construction company is involved, identify each party’s role and responsibility for payment, warranties, subcontractors, and defects.
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3. Verify general liability insurance independently
Request a current certificate of insurance
Ask for a current Certificate of Insurance (COI) before work begins. It should show the insured legal name, insurer, policy number, coverage limits, and effective and expiration dates. The COI is evidence of a policy record, but it is not a substitute for confirming that the policy is active and applicable to your project.
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California’s Contractors State License Board advises consumers to ask for a copy of the COI or the contractor’s insurance carrier and agency so coverage can be verified. Use contact information obtained independently—such as the insurer’s official website or a number you locate yourself—not only the phone number printed in an email from the contractor.
Ask the insurer the questions that matter
- Is the policy active on the planned start date and throughout the project?
- Does the named insured exactly match the contracting entity?
- Does the policy cover the type of construction and the project location?
- What are the applicable limits, deductibles, exclusions, and cancellation status?
- Are subcontractors required to carry their own coverage, and can that be confirmed?
An insurer may not disclose every policy detail to a homeowner, but it can generally confirm whether the policy number and named insured are valid and whether coverage is in force. Ask the agency to send confirmation directly to you when possible. Keep the COI and the date and method of verification in your project file.
Understand what liability insurance does not cover
General liability insurance typically addresses third-party bodily injury or property damage subject to policy terms. It does not answer whether employees are covered for workplace injuries, whether defective workmanship itself is covered, or whether a subcontractor has insurance. Those questions require separate workers’ compensation and subcontractor checks.
4. Check workers’ compensation separately
General liability coverage is not workers’ compensation. If the contractor has employees, verify workers’ compensation coverage through the state workers’ compensation proof-of-coverage search or the agency designated by your state. Ask for the contractor’s policy information and confirm that the legal employer named on the policy is the same entity signing your contract.
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Keep in mind that state rules differ on who counts as an employee, which trades require coverage, and when a homeowner can be treated as an employer. Ask the state office or a qualified attorney how the rule applies to your project rather than relying on a contractor’s verbal assurance.
5. Test availability with comparable written bids
Request at least two or three complete bids
Obtain at least two or three written bids for the same scope. Georgia Attorney General guidance recommends written estimates from at least three different contractors. A bid that omits demolition, disposal, permits, finish materials, protection of existing areas, or cleanup is not comparable to one that includes those items.
Require every bid to state:
- Detailed work scope, quantities, brands or performance specifications, and finish assumptions.
- Items excluded or supplied by the homeowner.
- Estimated start date, completion date, working hours, and crew size.
- Subcontractors or specialty trades expected to participate.
- Permit responsibilities, inspection assumptions, and allowance amounts.
- Payment milestones, deposit amount, retainage if any, and change-order pricing.
- Warranty coverage, service response, and cleanup responsibilities.
Use dates you can measure
Ask whether the proposed start date is a firm commitment or an estimate contingent on another project finishing. Ask how many working days the contractor expects, what events pause the clock, and when you will receive an updated date if conditions change. Georgia guidance says to agree on start and completion dates and put them in the contract. A calendar date or defined number of working days is more useful than “soon” or “about a month.”
Confirm the contractor has capacity
Ask who will be on site, whether the crew is employees or subcontractors, and how many other projects will run concurrently. Request the name of the person responsible for daily coordination and the method and frequency of schedule updates. Contact references for recent projects of similar size and complexity, and ask whether the contractor started and finished when promised, communicated delays, and returned to correct punch-list work.
6. Analyze schedule risk before signing
Identify dependencies that can move the dates
Ask the contractor to list every known dependency:
- Permit issuance, plan review, inspections, and utility locates.
- Material lead times, special-order items, and delivery storage.
- Weather-sensitive work and seasonal restrictions.
- Engineering, testing, or approvals required before the next trade can begin.
- Subcontractor availability and handoffs between trades.
- Access limitations, occupied spaces, pets, neighbors, or working-hour rules.
For each dependency, ask who is responsible, what assumption appears in the bid, and what happens if it fails. A responsible schedule states how a delay is reported, how many days are added, and whether the contractor must provide a revised written completion date.
Put schedule controls in the contract
Include the planned start and completion dates, permitted extensions, notice requirements, and the communication cadence. Specify whether “completion” means substantial completion, final inspection, or completion of the punch list. Require written change orders to show the added or removed work, price adjustment, and schedule impact before the changed work begins.
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Do not accept an unlimited delay clause that allows dates to move for any reason without notice. Reasonable weather or force-majeure provisions can be defined, but the contractor should still notify you promptly and document the revised date. If a permit or inspection is delayed, the record should show when the application was submitted and what event is awaited.
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Call comparable references
Ask for recent customers whose projects resemble yours in trade, size, and complexity. Ask references specific questions: Was the written scope complete? Did the crew show up as scheduled? Were change orders explained before extra work? Was the site protected and cleaned? Were permits and inspections handled? Did the contractor resolve defects and honor the warranty?
Search complaints and public records
Use reputable consumer-protection, licensing, court, and review sources. Treat a complaint as a question to investigate, not automatic proof of wrongdoing; look for patterns, unresolved cases, or discipline that relates to your type of work. Confirm the business registration and any local business license independently. Keep notes on what you found and the contractor’s response.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.8. Sign a complete contract and retain the file
Essential contract terms
Your signed contract should identify the legal names and addresses of all parties and include the contractor’s license number where required. Attach the final scope, drawings and specifications, materials and allowances, permit responsibilities, start and completion dates, payment schedule, warranty, cleanup standard, change-order process, dispute procedure, and cancellation rights. State who is responsible for damage to existing property and for correcting failed inspections.
Never sign a blank contract, an estimate that says the scope will be determined later, or a form that allows the contractor to fill in the price or dates after you sign. Cross out unused sections or mark them “not applicable” before signing. Each party should receive a complete, legible copy with all attachments.
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Keep a chronological project file
Retain the signed contract, every bid, license printout, COI, workers’ compensation proof or exemption, permits, inspection results, invoices, receipts, lien releases, change orders, photographs, and correspondence. Save text messages and emails that affect scope, price, dates, or approvals. A simple dated log of site visits, promised actions, and completed work makes disagreements easier to resolve.
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9. Control deposits and progress payments
Use milestones tied to inspected work
Avoid paying the full contract amount up front. Use a deposit and milestone payments tied to identifiable, inspected progress, while following the deposit limits in your state or local law. Define what evidence supports each invoice—for example, a completed phase, delivered materials, or a passed inspection—and reserve the final payment until the work is complete and satisfactory.
Do not sign a certificate of completion or release final funds while material defects, incomplete work, missing permits, or unresolved inspection items remain. Florida consumer guidance specifically warns consumers not to make final payment until the work is complete and satisfactory. Obtain lien releases or equivalent documentation as required by local law, especially after paying for supplied materials or subcontracted work.
Choose a traceable payment method
The Federal Trade Commission warns against cash, wire transfers, gift cards, and similar irreversible methods. Pay by a method that creates a record, and make the payee the legal entity named in the contract. Be cautious if payment instructions suddenly change by email or if the contractor asks you to pay an individual, unrelated company, or cryptocurrency wallet.
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Use one row per contractor and complete the fields from documents, not memory. A lower bid is not a better value if it omits permits, insurance, materials, or a realistic schedule.
| Comparison item | What to verify | Questions to resolve |
|---|---|---|
| License | Status, classification, expiration, discipline, and issuing authority | Does it authorize every trade in your scope? |
| Identity | Legal name, address, license number, registration, and signatory | Do all documents name the same contracting entity? |
| Insurance | COI, insurer, policy number, limits, effective and expiration dates | Is coverage active for this work and location? |
| Workers’ compensation | Proof of coverage or valid exemption for the actual employer | Who covers employees and subcontractors? |
| Scope | Materials, quantities, exclusions, allowances, permits, and cleanup | Are the bids genuinely comparable? |
| Schedule | Start, completion, working days, dependencies, and update process | What event moves the date, and how will notice be given? |
| Subcontractors | Trades involved, names when known, and their insurance plan | Who supervises and remains responsible? |
| Change orders | Written approval, price formula, and schedule effect | Can extra work begin without your signed approval? |
| Warranty and disputes | Coverage period, exclusions, response time, and dispute steps | What is the remedy if work fails? |
| Payments | Deposit, milestones, retainage, final payment, and lien releases | Are payments tied to completed, inspected work? |
| Communication | Primary contact, reporting frequency, and escalation path | Who answers when the schedule or scope changes? |
Red flags that justify stopping
- The contractor refuses to provide a license number, current COI, workers’ compensation proof, or written contract.
- The license lookup name does not match the contracting entity, and the explanation is not documented.
- You are pressured to sign immediately, especially through door-to-door urgency or a price that is dramatically below comparable bids.
- The contractor demands full payment up front or insists on cash, a wire, gift cards, or cryptocurrency.
- The contractor asks you to pull permits that the contractor should obtain, or discourages inspections.
- Start and completion dates, payment milestones, or change-order terms will not be put in writing.
- Insurance documents are expired, altered, addressed to another company, or impossible to verify with the insurer.
When a red flag appears, pause the project, keep copies of the documents, and contact the licensing board, building department, workers’ compensation office, insurer, or consumer-protection agency for your jurisdiction. Do not let a promised discount or an urgent start date replace verification.
Final pre-signing checklist
- Confirm the correct state, county, or city authority for the work and save the license result.
- Match the legal name, address, license number, and signatory across the license, estimate, contract, insurance, and invoices.
- Verify a current COI with the insurer or agency using independently obtained contact information.
- Verify workers’ compensation coverage or a jurisdictionally valid exemption for the people doing the work.
- Compare at least two or three complete written bids with the same scope and exclusions.
- Document permits, inspections, material lead times, subcontractors, weather contingencies, and the schedule-update process.
- Make the contract include scope, materials, dates, milestones, warranties, change orders, cleanup, disputes, cancellation rights, and permit duties.
- Set traceable milestone payments, obey local deposit limits, and withhold final payment until satisfactory completion.
- Store the complete project file, including lien releases and all written schedule or price changes.
Only proceed when the records agree, coverage is independently confirmed, and the contractor’s availability and schedule are specific enough to enforce. If any essential item remains unverified, the safest decision is to wait or choose a contractor whose documentation is complete.
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