The most consequential professional liability decision a design principal ever makes is frequently signed in the same season they hand over the keys. A retirement, a merger, a planned wind-down — each closes a chapter of a practice, and each can quietly close a policy that was the only thing standing between a decades-old drawing and a lawsuit that has not yet been filed. Understanding why requires looking at how architects and engineers are insured in the first place.

Claims-made is the architecture of the coverage. Nearly all A and E professional liability — errors and omissions — is written on a claims-made basis, not occurrence. Two conditions must both hold for a claim to be paid: the work must have been performed after the policy's retroactive date, and the claim must be reported while a policy is in force. As long as a firm renews continuously, that second condition takes care of itself. The exposure appears the moment renewal stops. If the policy has ended when a claim arrives, there may be no coverage at all — even when the alleged error occurred while the original policy was active and premiums were paid in full.

This matters because design claims surface on a long delay. Water intrusion, structural cracking, an HVAC failure — these often emerge five to ten years after substantial completion. Tennessee's statute of repose for improvements to real property runs four years, extended to five when the injury occurs in the fourth year, which means a Knoxville or Oak Ridge principal can face a valid claim well after the last invoice cleared. Retire and drop the policy the same year, and the runway of exposure outlives the runway of coverage.

The Extended Reporting Period is how you close the gap. A tail — the Extended Reporting Period, or ERP — is the endorsement that keeps the reporting window open after a policy terminates, preserving coverage for work already performed. Carriers price it as a percentage of the expiring annual premium, and the menu is more layered than most principals expect. Great American, for example, has published one-year tails at 100 percent of expiring, three-year at 175 percent, and five-year at 250 percent; RLI's five-year option runs 235 percent. Durations commonly offered are one, three, five, and ten years, with unlimited tails available from some markets and, in certain retirement scenarios, a no-cost tail for principals who meet age and tenure conditions. The correct length is not a matter of taste — it is set by statutes of repose, contract requirements, and how long your riskiest projects stay exposed.

In a sale, the retroactive date is the asset to protect. When a firm is acquired, continuity of the retroactive date — prior-acts coverage — is what carries historical work forward. A disciplined purchase agreement states that the buyer's replacement policy will provide prior-acts coverage back to the seller's existing retroactive date, or that the seller funds the difference. Lose the retroactive date in a carrier change and every project completed before the new policy's start becomes uninsured. The buy-back for that continuity, sometimes called nose coverage, typically costs 50 to 150 percent of an annual premium, while a full tail more often lands between 100 and 300 percent depending on risk class.

Who pays is a negotiated term, not a default. A seller seeking a clean exit from all future exposure ordinarily funds the tail; a buyer who insists on changing carriers, or who wants insulation from a seller's potential insolvency, funds the nose. Sophisticated deals layer the two and align escrow holdbacks to the statute of limitations — often 18 to 48 months — so dollars sit in reserve exactly as long as claims can realistically arrive. None of this can be improvised at closing. It is drafted, priced, and negotiated on a submission built months earlier.

Succession is a discipline, and the data shows the gap. The ACEC Research Institute's Ownership Transfer and Management Succession survey, conducted with FMI Capital Advisors, found that roughly two-thirds of firms have an ownership transition plan in place — meaning a full third do not — and that 41 percent of those without a plan have not explored any options at all. Only about 15 percent intend to sell to an outside buyer. Each of those paths carries a different tail-and-prior-acts consequence, and the firms that treat it as a fiduciary obligation rather than a year-end formality are the ones that hand a successor a clean book instead of a hidden liability.

That is the work of an advisor rather than a transaction. Peoples First Tennessee approaches every transition through a four-step strategic process: Strategic Discovery to surface the real timeline and exposures, Risk Assessment to quantify what an unfunded tail or broken retroactive date would cost, Solution Design to structure the ERP, prior-acts continuity, and who pays into the deal itself, and Ongoing Optimization as the plan and the market evolve. A career of careful drawings deserves the same intentional hand at the end. The torch you pass should illuminate the path forward, not the fine print you never read.

Sources: Professional Underwriters — Extended Reporting Period Options with Professional Liability Insurance Companies for Architects and Engineers; Professional Underwriters — Architects and Engineers Tail Coverage; Professional Underwriters — How Does My Architects/Engineers Professional Liability Policy Work as I Prepare to Retire?; Insurance Curator — Negotiating Tail and Prior Acts Terms When Buying or Selling a Firm With Professional Liability Insurance; ACEC Research Institute / FMI Capital Advisors — Ownership Transfer and Management Succession (OTMS) Survey; Brezina Law — Understanding Tennessee Statute of Repose for Construction Defects (T.C.A. 28-3-202); ALPS Insurance — Extended Reporting Period (ERP) Endorsement; American Bar Association — FAQs on Extended Reporting (Tail) Coverage

— Ryan Mefford, President & Risk Advisor