Checking an MEP Contractor's References: The Questions That Reveal the Real Track Record

To check an MEP contractor's references, call the owner or facility head of two or three completed jobs similar to yours and ask about scope, final cost against contract, handover date, first-pass approvals, documents received and defects in year one. Then visit one site, and ask to see the contractor's electrical licence and approval letters. A reference list proves nothing until someone has picked up the phone.

What counts as a reference worth checking?

A reference is a completed job that resembles yours in size, discipline and scope. A contractor with ten large hospital jobs has not necessarily shown it can finish a 40,000 sq ft factory shed with fire and electrical under one contract.

Public procurement offers a yardstick you can borrow. The Department of Expenditure's Manual for Procurement of Works (Second Edition, 2025) suggests that bidders show similar completed works in the last seven years, as one of three alternatives: three works each costing at least 40% of the estimated cost, two works at 50% each, or one work at 80%. It says similarity should be defined beforehand by physical size, complexity, method and scope; that a job done as a sub-contractor or joint venture member counts only for the applicant's own share by value; and that "substantially completed" means 90% of the contract value paid, the work usable for its purpose and no termination proceedings pending. The manual is written for government tenders and calls its criteria illustrative, but the logic transfers to a private owner. Write down your own definition of "similar" before you ask for references, and ask whether the contractor was the main contractor or a sub-contractor on each one.

Which questions reveal the real track record?

Ask the person who operates the building, not only the person who signed the contract. Facility managers remember the defects.

Take notes in the client's words and ask the same questions of every contractor, so the answers can be compared. Our list of what to check in a factory or warehouse MEP contractor pairs with this.

What should you look at on a site visit?

Ask to see an operating site of the same type. You are not judging the architecture; you are reading the workmanship nobody sees at the handover photo.

• Open a panel door, with permission. Look at cable dressing, ferruling, labels, the single-line diagram on the door and any hot or discoloured terminations.
• Walk a cable tray run: segregation of power and control cables, supports, and fire stopping where trays pass through walls.
• Find the earth pits and the test records on them.
• In the pump room, look for a maintained log, tested valves and a clean, labelled installation.
• Ask for the handover file and see how it is indexed.
• Ask the maintenance team who they call when something fails, and how long the contractor takes to respond.

What can licences and authorities confirm?

Some checks do not depend on the contractor's word.

• Electrical licence. The CEA Safety Regulations, 2023 (regulation 31) require electrical installation work, including additions and alterations, to be done by an electrical contractor licensed by the State Government, under a supervisor holding a certificate of competency, using workers with a recognised permit. Ask for the licence number, its validity and the supervisor's certificate, and check them with the state licensing board.
• Tax registration. The GST portal has a public search for a taxpayer by GSTIN, which shows whether the registration is active. It tells you the firm exists and files returns, not that it builds well.
• Approval letters. A client can show the Fire NOC and the electrical inspection approval for the referenced job. These record who the installer was and whether the system passed. Our pages on Fire NOC and CEIG approval list what those letters look like.
• Contract documents. Ask what the contractor does in the defect period; our guide to defects liability in MEP contracts sets out the terms that make a reference visit useful later.

We could not find a public registry that lists a private contractor's past MEP jobs, so the client has to confirm them. Treat a contractor who will not let you speak to a client as a contractor without references.

How do you weigh what you hear?

Do not average the answers. One serious failure, such as a fire system that failed its first inspection and took months to close, outweighs three pleasant calls. Look for patterns across clients: the same delay cause, the same missing document, the same snag. Compare the contractor's own account of the job with the client's. A contractor who describes a late job honestly and explains what changed is easier to trust than one whose every project finished early.

Then test the bid against the references. A price far below the others on a scope that references say needed variations is a warning. Our MEP quotation comparison calculator helps you set bids side by side.

How Secured Engineers helps

We design in-house and carry electrical, fire fighting, HVAC and plumbing under one MEPF contract, with Fire NOC, CEIG and DISCOM net-metering filed by our own team, so the approval letters in a reference file come from the same people who built the system. Our offices are in Noida (Delhi NCR) and Ludhiana. We have completed 535+ projects across 18+ states, with 89.77% repeat clients, and delivered work on record is listed on our projects page. Run the same questions on us as on anyone else.

If you already have a BOQ or drawings, send them and we will review the scope and the sequencing so you can compare contractors on the same footing. See turnkey MEPF contracting, then message us on WhatsApp, call +91 70099 85817, or ask for a free proposal.