Reference Checks Are Where Most Buyers Give Up

You ask for references, the firm sends three names, you call one, they say the team was great, you sign. That process has almost no information value. The firm chose those three names from every client it ever had, and it called them first to prepare them.

A real reference check is an investigation, and it takes about two hours. On a $150,000 engagement that is the cheapest risk reduction available, and roughly one check in four surfaces something material.

What Makes a Reference Worth Calling

Not all references carry the same weight. Rank them.

  • Similar in scope and complexity. A firm that delivered a $30,000 CAD job tells you nothing about how it runs a $300,000 program with electronics, firmware, and tooling. Ask specifically for a reference at your budget scale.
  • Recent, and with the same people. Firms turn over. A project delivered four years ago by a team that has since left is a reference for a company that no longer exists. Ask who from the proposed team worked on it.
  • Went all the way to production. A design that was never manufactured never had its DFM tested. Ask for at least one reference whose product is being sold today.
  • A project that went badly. This is the request that separates serious firms from marketing operations. "Give me a reference from a project that ran over budget or got difficult." A firm that has been in business for ten years and claims no such project is either new or not telling the truth. How they handled the bad one is the most predictive data you will get.
  • Ones you found yourself. Take a product from the firm's portfolio, find the company on LinkedIn, and contact someone who is not on the reference list. This is the call that produces the unmanaged answer.

Cross-check the list against the portfolio itself, since portfolio claims and reference claims should describe the same projects; discrepancies are worth asking about, and evaluating a firm's portfolio covers what those images actually prove.

How to Run the Call

Twenty to thirty minutes, on the phone, not email. Email answers are written to be forwardable and say nothing. Open by explaining you are considering the firm for a similar project, which frames the call as peer-to-peer rather than as an audit, then work through specifics. Vague questions produce vague answers, so ask for numbers and events.

  • What was the original quoted price and schedule, and what was the final price and schedule? Get both numbers. Overruns are normal; the ratio and the reason are what matter, and the causes are catalogued in why engineering budgets overrun.
  • What changed the scope, and who initiated the changes, you or them?
  • Who was actually on your project day to day? Was it the senior person from the sales meeting or someone junior?
  • How did you find out about problems? Did they raise issues early or did you discover them?
  • What did they get wrong, and how did they handle it?
  • Did the design work at the factory, or did it need rework for manufacturability?
  • What documentation did you receive at the end, and do you own the native CAD?
  • Would you hire them again for this same project, and would you hire them for something bigger?

Two techniques get past politeness. First, ask the last question as "what would you do differently if you started over?" People who will not criticize a vendor will happily criticize their own past decisions, and the answer usually contains the vendor problem. Second, use silence. After an answer, wait three seconds. The elaboration that follows is where the real content lives.

Cross-Checking Against Objective Evidence

References are opinions. Verify them against things that cannot be coached.

Look at the shipped product. If the reference product is on the market, buy one. Take it apart. Part count, fastener choice, molded-in features, how the electronics are mounted. Twenty minutes with a screwdriver tells you more about a firm's engineering judgment than any conversation.

Check public records. Patents naming the firm's engineers, FCC ID filings, UL listings, and 510(k) clearances are all searchable and all dated. A firm claiming deep regulated-product experience should leave a public trail.

Verify the firm itself. Business registration, professional liability insurance, and any quality certification such as ISO 9001 or ISO 13485. Ask for the certificate, not the logo, and confirm the scope covers the work you need.

Ask for a sample data package. A redacted drawing set and BOM from a real project shows the standard of work directly. Sloppy drawings from a firm's best example are a decisive finding. Likewise, if they claimed medical work, ask which submission and which client, then verify; claims that soften under questioning were marketing.

Weigh domain claims carefully, because industry experience is worth less than it sounds for some products and a great deal for others; the boundary is drawn in whether your firm needs industry experience.

Red Flags That Keep Recurring

  • Only one reference offered, or all three from the same year. Either a thin client base or a filtered one.
  • Every reference praises responsiveness and nothing technical. Nice people who did not solve hard problems.
  • The firm resists direct contact. Offering to "arrange" the call, sit in on it, or pass questions along is a serious signal, and it belongs on the list of red flags when hiring an engineering firm.
  • No reference product reached production. A portfolio of concepts is a rendering studio, not an engineering firm.
  • Consistent stories about scope changes billed as extras. One overrun is a project; three is a business model.
  • Named clients who will not confirm the relationship. Logos on a website are not evidence.

Fitting the Check Into the Decision

Do the reference calls after you have shortlisted two or three firms and read their proposals, but before you sign anything. Use what you learn to sharpen the questions in choosing a design firm and to reopen specific terms: if two references describe change orders on top of a fixed price, tighten the scope language in the contract before it matters.

One more low-cost tactic: buy a small piece of work first. A two-week paid feasibility study or a single detailed part design costs a few thousand dollars and gives you direct evidence of communication, documentation quality, and whether they hit a date. That is the reference check nobody can manage on your behalf.

We Expect the Same Scrutiny

Projects House gives clients references at comparable scope, including projects that ran long and why, and we are glad to be checked against the public record. Tell us what you are building through our contact form and we will put you in touch with clients who did work like yours.