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Before signing a construction contract, verify the contractor’s identity, license and insurance, compare the written scope and price with other bids, and make sure the agreement spells out payments, permits, changes, deadlines and completion requirements. Treat this as a U.S.-focused due-diligence checklist, not a substitute for checking the rules where your project is located: licensing, deposits, cancellation rights, permits and lien protections vary by state and local jurisdiction.
What should I check before hiring a contractor?
Start with the contractor’s exact business identity and the work the company is authorized to perform. Then check insurance, relevant references and comparable written bids. Do these checks before paying a deposit or signing an estimate, proposal, authorization or contract: a document called an “authorization” may still commit you to terms.
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1Repair Windows errors before they cause bigger problems2Scan for outdated or missing drivers - takes under a minute3Clear out junk files and repair common Windows errors- Match the identity across documents. Get the contractor’s legal business name, business address, contact information and license number where applicable. Compare them with the official licensing record, bid and proposed contract. Confirm that the named company—not just a similarly named individual—is the one you are hiring.
- Check the license in the official database. Verify that it is active, that its classification covers the work, and whether the record shows complaints or discipline. Licensing requirements and databases differ by state and may depend on trade, project value or type. The California Contractors State License Board’s homeowner checklist and Oregon’s contractor consumer tools illustrate why it is important to check the regulator for the project’s actual location.
- Confirm who is authorized to act for the business. Ask for photo identification and, where available, a license card or registration. If a salesperson or project manager is negotiating, confirm they are authorized to act for the licensed company.
- Ask for current insurance documentation. Request proof of relevant coverage and ask the insurer or agent to confirm the policy dates and what the coverage applies to. General liability insurance, workers’ compensation and a workmanship warranty are different things. Insurance does not necessarily cover defective work, failure to finish or every kind of property damage; Michigan’s homeowner guidance on building and remodeling cautions against treating insurance as a guarantee against those problems.
- Call references for similar projects. Ask for recent customers whose work resembles yours, and contact them directly. Ask whether the scope changed, how delays and job-site care were handled, whether communication was reliable, whether punch-list items were completed and whether the final cost matched the agreed pricing basis. If practical, look at completed work. California’s checklist suggests asking for three local references; that is an advisory practice, not a universal legal requirement.
- Get written, comparable bids. Ask each contractor to price the same plans, scope, material quality, allowances, schedule assumptions and exclusions. The Michigan Attorney General suggests obtaining two or three written estimates. An unusually low estimate is a reason to ask what has been left out, not proof of a bargain.
Check the business address and contact details, as well as any complaint history available from the regulator. Be cautious if a contractor refuses to provide a license number, written estimate, references or contract; pressures you to sign immediately; demands substantial advance payment; or asks you to sign a broad authorization before you have decided to proceed.
How do I compare contractor bids fairly?
Compare what each price buys, not just the bottom-line number. A bid is useful only when you can see what work, materials and assumptions it includes.
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Put the bids side by side and check whether each one identifies:
- Work included and excluded, including demolition, labor, installation, cleanup and debris removal.
- Materials and equipment, with identifying details such as brand or model where they matter.
- Allowances and their dollar amounts; an allowance is a budget placeholder, not necessarily a final material price.
- Whether the price is fixed, unit-priced or time-and-materials, and how rates, markups and approvals work.
- Permits, inspections, fees, expected schedule, delivery assumptions and responsibilities for delays.
- Payment milestones, change-order procedures, warranty terms and completion requirements.
If one bid uses a cheaper material, excludes site protection or debris removal, or leaves more choices to allowances, its apparent savings may not be comparable. Ask each contractor to explain unclear terms in writing and revise the proposal if needed. Do not assume a vague estimate will be filled in later in your favor.
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What should be in a construction contract before I sign?
The signed agreement should make the project understandable without relying on verbal promises. It should identify the parties and job, define the work and price, set out schedule and payment terms, and say who handles permits, changes and final completion.
Parties, site and project documents
Include the owner’s and contractor’s names, the contractor’s business address and contact details, license number where applicable, and the project address. Attach the plans, specifications and other documents that define the project, and identify them in the agreement so there is no uncertainty about which version controls.
Scope, materials and exclusions
Describe the work in enough detail to distinguish included work from excluded work. Address demolition, labor, materials, equipment, cleanup, debris removal and site security. Identify important materials by type or model where appropriate, and list each allowance with its dollar amount and how selections or overages will be handled. A short paragraph may not capture a complex project; use attached plans and specifications for the detail.
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Price and charges
State a fixed price or explain how the total will be calculated. Clarify whether taxes, labor, materials, permit and inspection fees, and allowances are included. For time-and-material work, spell out labor rates, markups, what supporting records will be provided and whether there is a cap or a threshold requiring your approval. Require invoices to identify the charges and supporting materials. Utah’s optional residential construction agreement is one example of a model contract that addresses supporting records for billed costs; it is not a substitute for terms suited to your project and jurisdiction.
Schedule, delays and supervision
Write down the anticipated start and completion dates, work hours, phases and material-delivery milestones. Identify who supervises the project and how schedule changes will be communicated. Address what happens if a deadline is missed and define contingencies for weather, supply delays, owner decisions or inspections. Avoid leaving “completion” open-ended.
Permits, inspections and approvals
List required permits, approvals, tests and inspections, and state who applies, who pays the fees and who gives you the final approval documents. Confirm actual project requirements with the local building department: the contract cannot make a permit unnecessary if local rules require one. Resolve responsibility before work starts, rather than letting contractor and owner assume the other will handle it.
Payments and final payment
Use an itemized schedule with amounts tied to completed work or delivered materials. A payment date by itself is a weak milestone if the corresponding work is not done. Define the final-payment trigger, including agreed punch-list work, required inspections and delivery of applicable completion documents or lien releases. Keep invoices and receipts, and do not pay the full contract price before the work is complete.
Changes and extra work
Require a written, signed change order before a change to scope or price proceeds, except for a clearly defined emergency needed to protect people or property. Each change order should state what is changing, the added or credited cost, the effect on the schedule and any revised payment milestones. Keep it with the original contract. A text or verbal discussion can be difficult to reconcile later if the written agreement does not record the decision.
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Warranty, termination and disputes
Read warranty, cleanup, suspension, termination, indemnity, attorney-fee and dispute-resolution provisions. For arbitration, find out who administers it, what rules apply, where it happens, what it may cost and how it affects access to court or other remedies. Ask a construction attorney familiar with local law to review unfamiliar or high-impact terms, particularly on a major custom or commercial project.
How much should I pay a contractor upfront?
There is no single deposit limit that applies to every U.S. construction contract. Avoid paying the full price in advance, avoid cash without a receipt, and tie progress payments to identifiable work or materials; then check the deposit and payment rules for the project’s jurisdiction and contract type.
California’s CSLB checklist says that, for the stated California home-improvement context, the down payment should be no more than 10% of the contract price or $1,000, whichever is less, and identifies a bond exception. That figure must not be applied as a national rule. New York has separate statutory payment protections, including escrow or bond provisions for covered work. The New York Attorney General’s home-improvement fact sheet describes the defined scope and terms of those protections. Confirm the applicable rule with the official state regulator or a local attorney before agreeing to an advance payment.
How do I protect myself from a mechanic’s lien?
A mechanics’ lien may be available when a contractor, subcontractor or supplier has not been paid for labor or materials, but who can claim one and what notices or releases apply depend on local law. Ask who will work on the project and supply materials, keep track of notices, and find out which lien waivers or releases are appropriate before making each payment.
Do not rely on a generic waiver or assume that paying the person who signed your contract resolves every claim. Ask a local construction attorney or relevant state authority which conditional or final releases fit your payment and jurisdiction. Keep signed releases with proof of payment and the corresponding invoice. New York’s Attorney General warns that an unpaid contractor or subcontractor may have a claim against the property; Utah’s model contract likewise makes lien releases relevant to final payment. These examples do not establish a single nationwide process.
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What are the red flags that mean I should pause?
Pause and get the issue resolved in writing before signing or paying if you encounter any of the following:
- The contractor will not provide a license number, references, written scope or signed contract.
- The estimate is unusually low but vague, or the bids cannot be compared because materials, allowances or exclusions are missing.
- The contractor demands full or substantial payment before starting, demands cash for materials, or creates pressure to sign immediately.
- The form contains blank spaces, unchecked options, broad authorization language or terms you have not read. Michigan cautions that forms may include terms such as a lien on the home; Minnesota warns that an “authorization form” can operate as a binding contract.
- The contractor proposes skipping permits, asks you to obtain them without clarifying responsibility, or will not explain who is accountable for inspections and code compliance. Confirm requirements with the local building department.
- Insurance-claim or disaster work comes with same-day pressure or a promise that you will owe no more than an insurance settlement or deductible. Check any coverage and payment claim with your insurer and follow the applicable state rules.
Do not sign around missing information with a promise that it will be completed later. Ask for a complete copy, read every page and attachment, and keep a signed copy before work begins.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What local rules should I verify before signing?
Confirm rules with the official state licensing regulator, local building department and, where needed, an attorney. The answer may depend on location, whether the job is residential or commercial, the trade, project value and the form of contract.
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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 match- License thresholds and coverage: California’s CSLB pamphlet states a $500 combined labor-and-material cost threshold in its California licensing context. It is not a threshold for other states, and local rules may distinguish trades or project categories.
- Cancellation periods: The California checklist describes a three-day cancellation right and a five-day right for some seniors, subject to California-specific conditions and eligibility. Do not assume those periods apply to a contract elsewhere or to every project.
- Written-contract requirements: New York’s fact sheet says covered home-improvement contracts generally require a written agreement with approximate dates, detailed work and materials, price and specified cancellation notice. Its statutory coverage is not universal.
- Deposits and payment safeguards: Deposit limits, escrow or bond provisions and other payment rules vary by jurisdiction and covered contract type. Check the current local rule before accepting a contractor’s interpretation.
- Permits, lien notices and releases: Local authorities determine permit and inspection requirements; local law determines applicable lien notices and releases. Ask early enough to resolve these before the first payment.
What records should I keep after signing?
Keep the signed contract and all attachments, bids, insurance documentation, invoices, receipts, permits, inspection records, photographs, correspondence, notices, change orders and lien releases together. Save dated copies as the project progresses. A clear record helps you check what was agreed, confirm what has been paid and document whether required approvals or work are complete.
Before you sign, make sure you can answer four practical questions: exactly who is contracting with you, exactly what work and materials the price covers, what has to happen before each payment, and what documents will establish that the project is complete. If any answer depends on a verbal assurance, an unexplained blank or an unclear local rule, pause until it is resolved in the written agreement or confirmed by the appropriate authority.
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Frequently Asked Questions
Can a contractor’s estimate become a binding contract?
It can, depending on what the document says and local law; the title on the page is not decisive. Read any estimate, proposal or authorization for acceptance language, payment obligations and permission to begin work, and ask for clarification before signing.
Should I ask for proof of workers’ compensation if the contractor has no employees?
Ask the contractor to explain whether the policy applies to the people who will work on your project and what documentation is available. Requirements and exemptions vary by jurisdiction, so confirm the local rule rather than relying on an informal assurance.
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What if the contractor says a permit is unnecessary?
Check with the local building department using the actual project description; permit requirements can turn on the work and location. Keep the department’s guidance and the contract’s allocation of permit responsibility with your project records.
Can I withhold the final payment until repairs on the punch list are complete?
The contract should state what counts as completion and whether punch-list items, inspections or documents are conditions of final payment. Agree on that language before signing, and get local legal advice if the contract’s payment terms conflict with your understanding.
