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When a contractor’s first number is only an estimate, your goal is not to force a false promise of a final price. Your goal is to find out exactly what the number includes, which assumptions could change it, how changes will be documented, and when money is due. Ask the questions below before signing, then put the answers in a written contract.
This guidance is based on U.S. federal consumer advice for home-improvement work. Licensing, deposits, cancellation rights, permits and contract requirements can differ by state or county. Commercial construction and projects outside the United States may require different procedures.
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Start by turning the estimate into a defined scope
A verbal price or one-line proposal is difficult to compare and easy to dispute. The Federal Trade Commission (FTC) says, “A written estimate should include a description of the work to be done, materials, completion date, and the price.” Ask the contractor to put those elements in a document you can keep.
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- “Can you describe in writing exactly what work is included in this estimate?”
- “What is the intended finished result, and how will we decide whether the work is complete?”
- “Which tasks are included from preparation through cleanup and disposal?”
- “What work is expressly excluded from this price?”
For a remodel, “kitchen renovation” could mean demolition and installation only, or it could also include design, structural repairs, painting, flooring, appliance connections and rubbish removal. A scope that names each task gives you something concrete to compare and a record of what you approved.
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Materials, quantities and quality
Ask for brands or performance standards where they matter, quantities, sizes, finishes and who will purchase each item. The CFPB advises documenting who pays for materials and their quantity and quality. Use questions such as:
- “Which materials, quantities and quality levels are included?”
- “Who is responsible for ordering, receiving and storing them?”
- “Are fixtures, appliances, finishes, delivery, taxes and disposal included?”
- “What happens if the specified material is unavailable or its price rises?”
If you are choosing materials later, ask whether the estimate uses an allowance and how an allowance differs from the final cost. Have the allowance, your selection deadline and the method for approving a difference written into the contract. Do not assume that an allowance is a cap unless the document says so.
Expose assumptions and unknown conditions
Cost uncertainty usually comes from facts that cannot be confirmed until work begins: hidden damage, soil or foundation conditions, wiring, plumbing, code requirements or owner selections. A responsible estimate identifies those assumptions instead of presenting them as settled facts.
Questions that reveal risk
- “What assumptions did you use to calculate this price?”
- “Which conditions have not been inspected or verified?”
- “What findings could increase or decrease the price once work starts?”
- “What work is excluded because it depends on an inspection, permit or concealed condition?”
- “Can you show the amount or unit price that would apply if each likely issue occurs?”
Ask the contractor to distinguish a known cost from a provisional assumption. For example, “replace 40 feet of damaged drain line at the stated unit price” is more useful than “plumbing problems extra.” You are not demanding that every unknown be predicted; you are making the uncertainty visible and giving yourself a way to evaluate it.
Agree on how a change will be handled
Ask: “If you find an unexpected condition or recommend extra work, how will you document the scope and price change and get my approval before proceeding?” The FTC and CFPB support written documentation of scope, cost, materials and promises, but the federal guidance does not establish one universal change-order form or procedure.
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Have the contract state who may authorize additional work, what information a written proposal must contain, and whether work pauses while you decide. A useful change document identifies:
- the original scope or allowance being changed;
- the added or deleted work;
- materials and quantities;
- the price adjustment or calculation method;
- the schedule effect; and
- signatures or another clear written approval from both sides.
If emergency work is necessary to prevent immediate damage, ask how the contractor will notify you, record the condition with photographs or other evidence, and limit work to what is necessary before approval can be obtained. The exact legal effect of an unsigned change varies by jurisdiction and contract, so check local requirements.
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The CFPB recommends obtaining written estimates from at least two to three contractors. More bids are not automatically better if each describes a different project. Give each contractor the same plans, specifications and questions, then compare the documents line by line.
| Compare this item | What to look for |
|---|---|
| Scope | Tasks included, exclusions, preparation, cleanup and the definition of completion |
| Materials | Specified products or standards, quantities, allowances, delivery and who buys them |
| Schedule | Estimated start and completion dates, working hours, sequencing and stated delay risks |
| Price | Total estimate, unit prices or allowances, taxes and the treatment of unknown conditions |
| Payments | Down payment purpose, milestone amounts, receipts and the condition for final payment |
| Credentials | License information, insurance evidence, references and complaint-checking options |
| Promises and changes | Verbal commitments recorded in writing and a documented approval path for revisions |
Questions when one bid is much higher or lower
- “Can you explain the biggest differences between your estimate and the other bids?”
- “Which items are included in your bid that the others may have excluded?”
- “Are your quantities, material grades and labor assumptions the same as theirs?”
- “Does your price include permits, inspections, disposal, taxes and final touch-ups?”
The FTC cautions against choosing automatically by the lowest price and recommends asking about a large price difference. A low total may reflect omitted work, a lower material grade or a schedule assumption rather than a genuine saving.
Pin down the schedule and responsibility for permits
An estimate should state an estimated start and completion date, not merely “as soon as possible.” Ask:
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- “What are the estimated start and completion dates?”
- “Who will be on site, and how will subcontractors be scheduled?”
- “What events could delay the work, and how will you notify me?”
- “Who obtains permits, schedules inspections and pays the associated fees?”
- “What happens to the price or completion date if an inspector requires additional work?”
Record whether dates are estimates, milestones or contractual deadlines. Weather, material availability and concealed conditions may affect timing; the important point is to identify the assumed sequence and the communication method when it changes. Confirm that permit responsibility is explicit rather than inferred from a casual conversation.
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Set payment terms before work begins
Do not pay the entire project amount up front. The FTC notes that some states limit down payments, so check the rules where the property is located rather than relying on a universal percentage. Ask what each payment buys and keep the receipt.
Payment questions
- “What does the down payment cover?”
- “What work milestone is each later payment tied to?”
- “Which materials or deposits are being purchased with each payment?”
- “What payment methods do you accept, and will I receive a receipt?”
- “What must be complete before the final payment is due?”
- “How are approved changes added to the payment schedule?”
A written schedule should identify the total contract price or the method for calculating it, each due date or milestone, and any conditions for withholding or releasing a payment under local law. Keep copies of the signed contract, estimates, invoices, receipts, change documents, permits and correspondence in one project file. The CFPB specifically recommends documenting the total price and payment schedule and retaining receipts and project records.
Protect the final payment
Before paying the balance, use the contract’s completion definition to make a walkthrough checklist. Confirm that agreed work is complete, required inspections have been passed, cleanup is finished and you have received warranties, guarantees, manuals and lien-related documents required by your jurisdiction. Do not invent a “standard” retention amount; local law and the contract control what you may withhold.
Verify licensing, insurance and references
Ask for the contractor’s license number and proof of insurance, then verify them through the appropriate state or county authority. A certificate or number supplied by the contractor is a starting point, not a substitute for checking that it is current and applies to the work and location.
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Use references to test reliability
Ask: “Can I speak with recent customers about the quality of work, materials, pricing and timeliness?” Contact references independently and ask whether the final price changed, how changes were approved, whether the crew protected the property, and how quickly problems were corrected. The FTC also recommends checking references and complaints.
Ask which parts of the work will be subcontracted and who is responsible for supervising and paying those trades. Your contract should identify the contracting party so you know whom to contact when an issue arises.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.If the contractor offers financing
Contractor-arranged financing is a separate credit decision. The FTC says not to agree to it without shopping around and comparing loan terms; the CFPB likewise advises researching lenders independently rather than relying only on a contractor referral.
- “What are the full loan terms, fees, interest rate and payment obligations?”
- “Is the rate fixed or variable, and when does repayment begin?”
- “Are there penalties, deferred-interest conditions or security interests in my home?”
- “May I take the paperwork away and compare it with offers from other lenders?”
Do not let a financing application replace a clear construction contract. The loan documents should explain credit costs; the construction contract should explain the work, price, schedule and changes.
Know your cancellation and local-law rights
The FTC notes a three-business-day cancellation right for certain contracts signed in a consumer’s home or somewhere other than the seller’s permanent place of business. Whether it applies depends on the circumstances and applicable law; it is not a universal cancellation right for every contractor agreement. Ask the contractor to identify any cancellation notice, deadline and delivery method in the paperwork, then confirm the rule with your state or local consumer-protection authority.
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Licensing, deposit limits, lien notices, permit duties and contract disclosures vary by location. Before signing, check the state or county agency that regulates contractors and ask what documents or notices are required for your project type.
Keep a practical project record
A dedicated notebook or digital folder can keep estimates, the signed contract, product selections, receipts, photographs, inspection records and messages together. Label each change with its date and approval status. This organization does not reduce the project price by itself; it makes the agreed scope and payment history easier to verify.
Use this pre-signing checklist
- Obtain written estimates from at least two to three contractors.
- Give each bidder the same plans, specifications and material requirements.
- Mark every inclusion, exclusion, allowance and unknown condition.
- Record start and completion estimates, permit responsibility and likely delay causes.
- Verify the license and insurance through the relevant state or county authority.
- Call recent references and check available complaint information.
- Write the down payment, milestone payments, receipts and final-payment condition into the contract.
- Put verbal promises into the contract or an attached written document.
- Agree on how proposed changes will be described, priced and approved.
- Read any financing documents separately and compare them with independent offers.
- Keep signed copies, receipts, approvals, photographs and correspondence.
What a good answer sounds like
A contractor does not need to know every hidden condition in advance. A useful answer identifies what was inspected, states the assumptions, explains what is excluded and offers a written method for pricing an approved change. Evasive answers, pressure to sign immediately, demands for the entire price before work, or refusal to provide licensing, insurance or references are reasons to pause and verify the facts before committing.
The safest agreement is not necessarily the one with the smallest first number. It is the one that lets you compare bids fairly, understand what could move the price, control unauthorized changes and trace every payment to documented work.
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