Due diligence on a heavy truck and trailer repair shop

Once a heavy truck and trailer repair shop is under LOI, diligence is where a buyer finds out whether the business behind the listing actually matches the one described in it. Beyond the standard review of financial statements and contracts, this sub-sector has three verification points that carry more weight than usual: whether fleet accounts are contractually secure, whether commercial inspection authorization survives the change of ownership, and whether the technicians certified to do the specialized work intend to stay. Each has a specific way to check it, and each has a specific finding that should stop a buyer rather than get negotiated around.

Reconcile financial records against the fleet invoicing pattern

Request several years of financial statements, tax filings and bank statements, and reconcile them against each other rather than accepting a single seller-prepared summary. Because a large share of heavy-duty revenue moves through invoiced commercial accounts rather than cash walk-in traffic, bank deposits should reconcile cleanly against invoicing records for the shop’s largest fleet customers — a mismatch there is a more serious finding than the same mismatch would be at a retail-facing shop, since it points either to unbilled work or to revenue that never reached the business. Review parts and sublet costs against labour revenue as well, since heavy-duty shops typically carry higher outside-service costs than light-duty shops, and a seller’s reported margin can look stronger than it actually is if those costs are understated.

Verify fleet accounts one at a time

Do not accept a seller’s summary of “diversified commercial customer base” without seeing the underlying data. Request revenue broken out by customer for at least the last two or three years, and for the largest accounts, ask whether there is a term agreement, a service contract or simply a pattern of repeat work with no formal commitment. A finding that the top two or three customers account for a large share of revenue with nothing contractually binding them is not automatically a deal-breaker, but it should directly change the price and the structure of the deal — for example, by tying part of the purchase price to those accounts actually continuing after closing.

Confirm inspection authorization status with the regulator directly

Do not rely on the seller’s description of how commercial vehicle inspection authorization works. Contact the relevant provincial body — the Commercial Vehicle Inspection Program administrator in Ontario, or the equivalent program elsewhere — and ask specifically what happens to the shop’s authorization on a change of ownership, what a buyer needs to apply for personally, and how long that process typically takes. A finding that authorization is tied to an individual inspector who is not staying, with no clear path to replace that authorization promptly, is one of the more serious findings in this sub-sector’s diligence, because it can mean the shop cannot legally continue its highest-margin recurring work on day one of new ownership.

Check technician certification and intent to stay

Ask for the certification status of every technician performing air-brake and heavy-duty diesel work, and confirm that status independently rather than taking the seller’s word for it. Then ask each key technician directly, ideally in a conversation the seller cannot control, whether they intend to remain after the sale. A shop that reads as fully staffed on paper but where the certified technicians are non-committal about staying is, in practical terms, a shop with a much thinner bench than the org chart suggests.

Get an independent read on the equipment

Heavy-duty lifts, diesel diagnostic tools and alignment equipment should be reviewed by a technician or equipment appraiser who does not work for the seller, with maintenance and calibration logs requested for every major piece. Ask specifically whether any equipment is leased rather than owned, since a lease that does not transfer cleanly can leave a buyer without a tool the shop’s inspection and diagnostic work depends on.

Review environmental exposure from diesel-specific handling

Heavy-duty shops handle diesel fuel, larger volumes of waste oil, coolant and solvents, and sometimes underground or aboveground storage tanks, all of which carry environmental exposure that does not appear on a balance sheet. An environmental site assessment before closing, escalated to a more detailed review if the first one flags concerns, gives a buyer and their lender a documented picture of what they are taking on while there is still room to negotiate.

Review the lease and any assignable service agreements

If the shop operates from leased premises, confirm whether the lease can be assigned to a buyer and whether landlord consent is required, since a heavy-duty shop’s bay height, drainage and ventilation are often purpose-built and expensive to replicate elsewhere. Do the same for any equipment leases and fleet service agreements — contracts that look routine on the surface sometimes carry assignment restrictions that only surface once someone reads them line by line.