Questions to Ask a Concrete
Contractor Before Hiring
The complete checklist — 30+ questions across 8 critical areas that reveal reliability, protect your investment, and help you hire with confidence.
1. Credentials & Licensing
Before anything else, verify that the contractor is legally authorized and properly insured to perform concrete work in your area. This protects you from liability if something goes wrong on the job.
“Are you licensed to do concrete work in this state/city?”
Why this matters:
Licensing requirements vary by state and municipality. A licensed contractor has met minimum competency standards and is accountable to the licensing board.
What to look for:
Ask for the license number and verify it with your state's licensing board. Check the expiration date — an expired license is the same as no license.
“Do you carry liability insurance and workers' compensation?”
Why this matters:
Liability insurance covers property damage. Workers' comp covers injuries to the crew on your property. Without both, you could be held financially responsible for accidents.
What to look for:
Ask for a Certificate of Insurance (COI) and verify coverage limits. Minimum liability coverage should be $1 million. Call the insurance company to confirm the policy is active.
“Are you bonded?”
Why this matters:
A surety bond provides financial protection if the contractor fails to complete the work or doesn't pay subcontractors or suppliers.
What to look for:
Not all states require bonding, but it's an additional layer of protection, especially for larger projects.
“Do you pull permits, or is that my responsibility?”
Why this matters:
Most concrete work over 200 sq ft requires a building permit. A reputable contractor will handle permits as part of the project.
What to look for:
Contractors who suggest skipping permits are a major red flag. Unpermitted work can affect your home's resale value and insurance coverage.
2. Past Work & References
A contractor's track record is the best predictor of the quality you'll receive. Don't just take their word for it — ask for proof.
“Can you provide references from recent projects similar to mine?”
Why this matters:
Speaking with past clients gives you unfiltered feedback on quality, communication, and reliability. Emphasis on 'similar' — a foundation specialist may not be the best choice for decorative stamped patios.
What to look for:
Ask for 3–5 references from the last 12 months. Actually call them. Ask about timeline accuracy, cleanup, and whether they'd hire the contractor again.
“Do you have a portfolio or photos of completed work?”
Why this matters:
Visual proof lets you assess the quality and style of their finished concrete work.
What to look for:
Before-and-after photos are ideal. Look for consistency across projects — clean edges, even surfaces, proper finishing. Ask if any of the projects are local so you can drive by.
“How long have you been in business?”
Why this matters:
Longevity suggests stability and repeat customer satisfaction. It's not the only factor, but a company that's been operating for 5+ years has survived market ups and downs.
What to look for:
Cross-reference with their business registration. A company founded in 2024 claiming '20 years of experience' may mean the owner has personal experience but the business is new.
3. Timeline & Scheduling
Concrete work is time-sensitive — the material sets quickly and weather windows matter. Get clarity on timing before work begins.
“What is the estimated start date and completion timeline?”
Why this matters:
Knowing the timeline helps you plan around disruptions — especially for driveways where you'll lose parking access.
What to look for:
Get specific dates in writing, not vague 'in a few weeks' answers. Ask what could push the timeline and how much buffer is built in.
“How do you handle weather delays?”
Why this matters:
Concrete can't be poured in freezing temps or heavy rain. Weather delays are inevitable in many regions — what matters is how they're managed.
What to look for:
A professional contractor will have a weather policy in the contract. They should proactively communicate rescheduling rather than leaving you guessing.
“What are your daily work hours? How large is the crew?”
Why this matters:
Understanding crew size and hours helps set expectations for noise, access, and how quickly the work will progress.
What to look for:
Most residential concrete crews are 3–5 people. Larger projects may need more. Ask if the same crew will be on-site the entire project.
“Are there penalties for significant delays?”
Why this matters:
For larger projects, a delay clause in the contract protects you if the work drags on well past the agreed timeline.
What to look for:
This is more relevant for foundations and large commercial pours. For a patio, a reasonable timeline commitment in writing is sufficient.
4. Pricing & Estimates
The cheapest bid is rarely the best. Focus on understanding what you're paying for and how the costs are structured.
“Can you provide a detailed written estimate with cost breakdown?”
Why this matters:
A line-item estimate lets you compare bids apples-to-apples and understand where the money goes — materials, labor, equipment, permits, and cleanup.
What to look for:
Be wary of single-number 'flat rate' quotes with no breakdown. You should see separate lines for concrete, reinforcement, finishing, excavation, and labor at minimum.
“What is the payment schedule?”
Why this matters:
Payment structure reveals a lot about a contractor's trustworthiness. Never pay 100% upfront.
What to look for:
A typical schedule is 10–30% deposit, progress payments tied to milestones, and final payment upon completion and your satisfaction. Avoid contractors who demand more than 50% before work begins.
“Does your estimate include everything — permits, cleanup, disposal?”
Why this matters:
Hidden costs are the most common source of disputes. Make sure the estimate covers the full scope.
What to look for:
Ask specifically about: permit fees, concrete delivery charges, rebar/mesh, excavation, grading, forms removal, site cleanup, and concrete washout disposal.
“What concrete mix and PSI strength will you use?”
Why this matters:
Not all concrete is equal. The PSI (pounds per square inch) rating determines strength. Standard residential is 3,000–4,000 PSI, but driveways and foundations may need 4,500+.
What to look for:
Ask for the specific mix design. In freeze-thaw climates, confirm they'll use air-entrained concrete. For decorative work, ask about the coloring or stamping process.
5. Contract & Change Orders
A written contract is your most important protection. If it's not in writing, it doesn't exist.
“Will everything be documented in a written contract?”
Why this matters:
The contract should detail scope, materials, timeline, payment schedule, warranty, and dispute resolution. Verbal agreements are unenforceable.
What to look for:
Read the entire contract before signing. Key items: scope of work, materials specifications, start/end dates, payment schedule, warranty terms, and cancellation policy.
“How do you handle change orders?”
Why this matters:
Change orders are modifications to the original scope. Without a clear process, costs can spiral and timelines slip.
What to look for:
The contract should specify that all changes must be documented in writing with the cost impact before work proceeds. Never approve verbal change orders.
“What is your cancellation policy?”
Why this matters:
Life happens. You need to know the financial implications if you need to cancel or pause the project.
What to look for:
Most contracts allow cancellation within 3 business days (some states mandate this). After that, understand what portion of the deposit is refundable.
“How are disputes resolved?”
Why this matters:
If something goes wrong, you need a clear path to resolution without immediately jumping to litigation.
What to look for:
Look for arbitration or mediation clauses. These are faster and cheaper than going to court. Know which jurisdiction governs the contract.
6. Work Process & Materials
Understanding how the work will be done helps you evaluate quality during the project, not just after it's finished.
“What is your site preparation process?”
Why this matters:
Proper prep is critical. Skipping excavation, grading, or compaction leads to cracking and settling down the road.
What to look for:
The contractor should explain: excavation depth, base material (typically 4–6 inches of compacted gravel), grading for drainage, and subgrade compaction.
“What type of reinforcement will you use?”
Why this matters:
Rebar, wire mesh, or fiber reinforcement adds tensile strength. The right choice depends on load, climate, and slab size.
What to look for:
Ask about rebar size (typically #4 or #5 for residential), spacing, and whether they use chairs to keep rebar properly positioned in the slab — not just laid on the ground.
“How will you handle drainage and grading?”
Why this matters:
Water pooling on or under concrete causes damage. Proper slope (typically 1/8 inch per foot minimum away from structures) is essential.
What to look for:
The contractor should discuss slope direction, drainage channels if needed, and how the concrete ties into existing drainage patterns.
“What is your curing process?”
Why this matters:
Concrete needs time and moisture to reach full strength. Improper curing is a leading cause of early cracking and surface scaling.
What to look for:
Methods include wet curing (keeping the surface damp for 7 days), curing compounds, or plastic sheeting. Ask how long they recommend staying off the concrete after pour.
7. Communication & Project Management
Good communication prevents most contractor disputes. Establish expectations before work begins.
“Who will be my main point of contact?”
Why this matters:
You need one person to call with questions. On larger companies, the salesperson and the crew foreman may be different people.
What to look for:
Get a name, phone number, and email. Ask if they're reachable during work hours and what to expect for response times.
“How often will I receive progress updates?”
Why this matters:
Regular updates reduce anxiety and catch issues early. You shouldn't have to chase your contractor for information.
What to look for:
Daily or milestone-based updates are standard. Some contractors use project management apps or photo updates — these are positive signs.
“Will there be an on-site supervisor?”
Why this matters:
Someone senior should oversee the crew, especially during critical phases like the pour and finishing.
What to look for:
For smaller jobs, the owner may be the supervisor. For larger jobs, ask if a dedicated foreman will be on-site for every work day.
8. Warranty & Aftercare
The job isn't over when the crew leaves. Understand what's covered, for how long, and what maintenance you'll need to do.
“What warranty do you offer on your work?”
Why this matters:
A warranty demonstrates the contractor's confidence in their workmanship and gives you recourse if problems appear.
What to look for:
Industry standard is 1–2 years for workmanship. Some contractors offer longer coverage. Get the warranty terms in writing — verbal warranties are worthless.
“What does the warranty cover — and what doesn't it?”
Why this matters:
Warranties typically cover workmanship defects but exclude normal wear, hairline cracking, and damage from improper use or maintenance.
What to look for:
Ask specifically about: structural cracking (vs. hairline), settling, drainage failure, and surface delamination. Understand the claims process and response time.
“What maintenance will I need to do, and how often?”
Why this matters:
Concrete isn't maintenance-free. Proper sealing and care dramatically extend its lifespan.
What to look for:
A good contractor will provide a written maintenance guide covering sealing frequency (every 2–5 years), cleaning methods, winter care, and what to avoid (salt, harsh chemicals).
“Do you handle cleanup and concrete washout disposal?”
Why this matters:
Concrete washout is an environmental concern. Leftover material, forms, and debris should be removed as part of the job.
What to look for:
This should be in the contract. Ask where they dispose of washout — dumping it into storm drains is illegal in most municipalities.
🚩 Red Flags to Watch For
Demands full payment upfront
Legitimate contractors never require 100% before starting.
No written contract or estimate
Verbal agreements leave you with zero protection.
Suggests skipping permits
Unpermitted work can void insurance and hurt resale value.
Can't provide references
Every established contractor should have satisfied past clients.
Pressure to decide immediately
High-pressure tactics usually mean they can't compete on merit.
Significantly undercuts all other bids
Unusually low bids often signal cut corners, inferior materials, or hidden costs.
No insurance or won't show proof
You could be liable for injuries or damage on your property.
Vague or evasive about process
A professional should be able to clearly explain how they'll do the work.
Quick Reference Checklist
Before you hire, make sure you've confirmed all 8 areas: credentials, past work, timeline, pricing, contract, work process, communication, and warranty.
Ready to Find Vetted Contractors?
We pre-screen contractors so you don't have to. Get matched with licensed, insured professionals in your area.