Pouring concrete wrong is expensive, permanent, and almost impossible to fix. Whether you're planning a driveway, foundation, patio, or retaining wall, the contractor you choose determines whether that slab lasts 30 years or cracks in three. Here's a clear, step-by-step checklist to help you hire the right pro.
Step 1: Define Your Project Before You Call Anyone
Before reaching out to contractors, get specific about what you need. Concrete work covers a wide range — decorative overlays, stamped patios, structural foundations, and flatwork all require different skill sets and equipment.
Write down:
- The type of concrete work (slab, driveway, foundation, steps, etc.)
- Approximate square footage or dimensions
- Any special finishes (broom finish, exposed aggregate, stamped)
- Timeline and access constraints
Contractors give far more accurate quotes when you come prepared.
Step 2: Verify Licensing and Insurance
This is non-negotiable. A legitimate concrete contractor should carry:
- A valid contractor's license issued by your state or local jurisdiction
- General liability insurance (minimum $1 million per occurrence is standard)
- Workers' compensation coverage if they have employees
Ask for certificates of insurance directly, and call the insurer to confirm they're active. If a worker is injured on your property and the contractor isn't covered, you could be liable.
Step 3: Get At Least Three Written Quotes
Pricing varies more than most homeowners expect. A basic broom-finish driveway might run $6–$12 per square foot, while stamped or decorative concrete can reach $15–$25+ per square foot depending on your region and complexity.
When comparing bids, make sure each quote specifies:
- PSI rating of the concrete mix (3,000–4,000 PSI is typical for driveways; 4,000+ for structural work)
- Thickness (4 inches is standard for residential slabs; 6 inches for driveways that handle heavy vehicles)
- Reinforcement method (rebar, wire mesh, fiber)
- Base preparation details
- Who handles permits and inspections
A low bid that skips base prep or uses the wrong mix is a red flag, not a bargain.
Step 4: Check References and Past Work
Ask each contractor for three to five references from projects completed in the last two years. When you call, ask specifically:
- Did the contractor show up on time and stay on schedule?
- Were there any cracks or issues within the first year?
- How did they handle problems that came up mid-project?
- Would you hire them again?
If possible, visit a completed job site in person. Concrete issues like scaling, spalling, or uneven joints are visible up close and tell you a lot about workmanship.
Step 5: Ask the Right Questions Before You Sign
A short conversation can reveal a lot. Good questions to ask include:
- Who actually pours the concrete? Some contractors subcontract the pour to crews they've never worked with before.
- What's your curing process? Proper curing (keeping concrete moist for 7+ days) is critical to strength. Rushing this step causes premature cracking.
- How do you handle rain delays? Pouring in rain or extreme heat compromises the mix.
- What's your warranty? Reputable contractors typically offer a 1–2 year warranty on workmanship defects.
If a contractor can't answer these clearly, move on.
Step 6: Review the Contract Carefully
Never proceed on a handshake. Your contract should include:
- Full project scope and specifications (mix, thickness, PSI, reinforcement)
- Start and estimated completion dates
- Payment schedule (typically 10–30% upfront, remainder on completion — be cautious of anyone asking for 50%+ upfront)
- Change order process
- Warranty terms
- Cleanup and debris removal responsibilities
If something is promised verbally, it belongs in writing.
Step 7: Plan for the Permit and Inspection Process
Most structural concrete work — foundations, retaining walls over a certain height, large slabs — requires a permit. Your contractor should handle the permit application and schedule required inspections. If they suggest skipping permits to save money, that's a serious warning sign that can cause problems when you sell your home or file an insurance claim.
Where to Find Qualified Concrete Contractors
Comparing contractors on your own takes time — chasing down licenses, verifying insurance, collecting quotes from different websites. Mercoly makes it easier by letting you compare and find trusted concrete contractors in one place, so you're not starting from scratch.
The checklist above works whether you find contractors through referrals, local searches, or an online platform. What matters is applying it consistently.
Ready to get started? Use Mercoly to connect with vetted concrete contractors near you and get competitive quotes today.