Start with this: a strong commercial contractor is one who can prove, on paper and in person, that they have built what you are trying to build, that they carry the right licenses in your state, that their references pick up the phone with good things to say, and that their price is backed by a real schedule and a real team, not a spreadsheet. Everything below is how to verify each of those pieces before you sign.

The stakes are high. A retail upfit that slips six weeks means six weeks of lost sales. A hangar that fails an FAA inspection is a grounded aircraft. Picking the wrong contractor is not a minor mistake; it is the mistake that creates every other one.

Step 1: Confirm the License, Insurance, and Bonding Capacity

Before anything else, ask for the general contractor’s license number in the state where you are building and verify it on the state licensing board’s site. In North Carolina, that is the NCLBGC. Then request a current certificate of insurance (general liability and workers’ comp) and a letter from their surety confirming single-project and aggregate bonding capacity.

Why it matters: a contractor whose bonding capacity is $5M cannot responsibly take on your $12M project. If they say yes anyway, you are the experiment.

Step 2: Look for Sector-Specific Experience, Not Just “Commercial”

“Commercial construction” covers everything from a dental office to a 200,000 sq ft distribution center. The building codes, inspection cycles, and subcontractor trades are wildly different between them.

Ask for three completed projects in your specific sector within the last five years. If you are building a medical office, you want to see medical offices, not just “commercial.” If you are building a hangar, you want aviation. Hayco’s projects portfolio is organized this way on purpose: healthcare work with Cone Health and LabCorp, aviation work like the Surry County Aircraft Hangar, judicial and institutional builds, retail, and mixed-use.

Sector experience is the difference between a contractor who knows that a hospital’s negative-pressure isolation room needs a specific pressure differential and one who is going to learn on your job.

Step 3: Decide Whether Design-Build or Design-Bid-Build Fits Your Project

The delivery method shapes who you hire. In the traditional design-bid-build model, you hire an architect, complete drawings, then bid the drawings to contractors. In design-build, one entity holds a single contract for both design and construction.

Choose design-build when: your timeline is tight, your program is still evolving, or you want a single point of accountability for budget and schedule. Choose design-bid-build when: you already have completed drawings, or your project is straightforward enough that competitive lump-sum bidding will not create change-order chaos.

For most tenant improvements, healthcare fit-outs, and ground-up commercial work under a real deadline, design-build wins on speed and cost certainty. That is why it is the core of Hayco’s service offering.

Step 4: Interview the Actual Project Team, Not Just the Sales Lead

The person who wins your business is often not the person who runs your job. Insist on meeting the proposed project manager and superintendent before you sign. Ask each of them:

  • What projects have you personally run in the last 24 months?
  • How many active projects will you be managing while ours is underway?
  • Who is your backup if you are pulled off?

A superintendent juggling six sites will not give yours the attention a good outcome requires.

Step 5: Call Three References, and Ask the Uncomfortable Questions

Any contractor can hand you a glossy reference list. Your job is to make the calls count. Skip the softballs and ask:

  • What went wrong on the job, and how did they handle it?
  • Were the final numbers close to the contract, or was there a change-order pattern?
  • Would you hire them again for a bigger job? Why or why not?

The most useful reference is a client whose project had a real problem. How the contractor behaved when things got hard tells you more than a clean photo shoot.

Step 6: Compare Bids on Scope, Not Just Price

The lowest bid is almost always the one with the biggest holes in scope. Line up the bids side by side and ask each contractor to show, in writing, what is included and excluded. Look at allowances, alternates, and unit prices for the items most likely to change (site work, structural steel, MEP rough-in).

A bid that is 15% below the others is not a deal; it is a warning.

A Final Note

Selecting a contractor is really selecting a partner for the hardest 6 to 18 months your business will spend on any single project. If you would like to see how a design-build team approaches this from the owner’s side, the Hayco team is happy to walk you through recent work in your sector. Start at hayco-construction.com or reach out directly.