How to Vet a General Contractor Without Guessing

7 min read

Most owners select a contractor by comparing three numbers and trusting a handshake. Then they spend the next eighteen months managing the consequences of that decision.

Selection is the highest-leverage decision on a construction project. It deserves an actual process.

Qualify before you price

Send a short qualification package before you send drawings. You are trying to eliminate the wrong bidders before they consume your schedule.

Bonding capacity, both single-project and aggregate, with a surety letter.
Current backlog and projected staff availability during your build window.
Three completed projects of similar type, size, and delivery method within the last three years.
Named superintendent and project manager, with their current assignments and roll-off dates.
Safety record, including experience modification rate.
Financial reference from their bank and their top suppliers.
License verification and insurance certificates at your required limits.

The people matter more than the company

You are not hiring a logo. You are hiring a superintendent and a project manager. Ask for them by name, ask what else they are running, and ask when they actually become available. A strong firm with a stretched team will underperform a smaller firm with the right people on site.

Make the named staff a contract commitment with a substitution clause requiring your approval.

Read the bid, not just the number

A low bid is often a signal, not a bargain. Normalize before comparing:

Confirm every bidder priced the same scope, allowances, and alternates.
Compare general conditions and general requirements line by line — this is where staffing assumptions become visible.
Compare schedule duration; a shorter duration with the same general conditions means a lower monthly staff cost or an optimistic plan.
Read every exclusion and clarification. Exclusions are where the difference between two bids usually lives.
Look at contingency, escalation, and allowance carrying. A bid with no escalation in a volatile market is a bid with a change order plan.

Reference calls that actually tell you something

Skip "were you happy." Ask questions that force specifics:

How many change orders were issued, and what caused the largest one?
Was the original superintendent there at closeout?
How were subcontractor payment issues handled?
What did the punch list process look like, and how long did it take?
What did they do when something went wrong that was their fault?
Would you hire this exact team again, not this company?

Watch the subcontractor list

The general contractor assembles most of your risk from their subcontractor base. Ask which trades are self-performed, which subs are already committed, and how many bids they received per trade. Thin coverage in a critical trade is a schedule risk you will inherit.

Interview for behavior under pressure

The interview should not be a capability presentation. Give the team a real problem from your project and ask how they would handle it. Watch whether they ask good questions, whether the superintendent talks, and whether the answers are specific.

Score it, and write down why

Use a weighted scorecard covering price, team, schedule, approach, and references. Weight it before you see the bids so you cannot rationalize afterward. Document the decision. It protects you with lenders, partners, and your own memory a year later.

The takeaway

Contractor selection is a diligence exercise, not a procurement formality. Qualify first, normalize the bids, hire the named people, and score against criteria you set in advance. The premium you pay for the right team is almost always smaller than the change orders you avoid.