The One-Year Warranty Myth: Why Your Liability Doesn't End When the Callback Period Does

The myth has a respectable source: the AIA A201 family provides that for one year after substantial completion, the contractor must correct work found not in conformance with the contract documents. A generation of contractors internalized that as 'our warranty is one year' — and by extension, 'after one year, we're done.' The first half is roughly right. The second half is the myth, and it's an expensive one.

The correction period is a remedy — an owner's right to demand you come back and fix nonconforming work, and your corresponding right to be the one who fixes it (usually cheaper than paying someone else's invoice for the same repair). It is not a statute of limitations. Courts applying the standard language have consistently held that the one-year period does not bar later claims for defective work; it simply ends the specific comeback obligation. The owner who discovers rot behind the cladding in year four hasn't missed anything — the claim just changes clothes, from 'correction' to 'breach.'

Actual defect exposure is governed by two very different clocks, both state-specific. The statute of limitations typically gives an owner several years — commonly four to six for contract claims — measured, in many states, from when the defect was or should have been discovered. Latent defects, by definition, delay that discovery: the flashing installed wrong in 2024 that shows staining in 2029 may start its limitations clock in 2029.

The statute of repose is the outer wall: a hard cutoff — commonly six to twelve years from substantial completion, varying widely — after which construction claims die regardless of discovery. Repose statutes exist precisely because the industry needed an eventual end to tail liability. Together the clocks mean your realistic defect exposure on today's project runs well into the next decade — which is why we call substantial completion the one date that controls everything, and why we covered the two clocks in depth in our limitations-vs-repose explainer. The one-year 'warranty' is the shortest of the three periods, not the only one.

Onto that legal baseline, GC- and owner-drafted contracts stack express warranties — and this is where review matters most, because drafting choices quietly multiply exposure. Warranty periods of two, five, even ten years for specific systems. Warranty commencement at 'final acceptance of the entire project' rather than substantial completion of your scope — which, on a phased job, can add a year of coverage you didn't price. Warranties of 'fitness for intended purpose' that outrun the workmanship you actually control. Broad-form maintenance-like obligations dressed as warranties.

For suppliers and fabricators, the analysis shifts bodies of law entirely: material-supply deals are sales of goods under UCC Article 2, with implied warranties of merchantability and fitness that exist unless properly disclaimed, plus its own four-year limitations structure — a distinction we unpack in purchase order terms that can sink suppliers. Whichever side you sit on, the drafting question is the same: what exactly did you promise, to whom, starting when, for how long?

The most common self-inflicted wound is the gap between what you promise up the chain and what you receive down it. The contract demands a five-year roof warranty; your membrane manufacturer gives twenty years on material but your workmanship warranty is two; the installer's sub-tier warranty is one. Every increment where your upstream promise exceeds your downstream backing is exposure you carry alone — typically uninsured, since CGL policies generally exclude the cost of redoing your own defective work.

The fix is pass-through discipline: warrant your workmanship for your standard term, and pass manufacturer warranties through 'as received,' with the owner's remedies against the manufacturer, not you, for material failures. Where the contract insists on longer workmanship coverage, price it — a five-year workmanship warranty is a priced product, not a signature. And keep the start dates aligned: a warranty that begins at your scope's substantial completion, not the project's final acceptance, can be worth many months of tail. These are exactly the quiet drift points a systematic review catches when comparing contract versions — warranty terms are a favorite place for late-round edits.

Once you accept that the tail is years, not months, several practices follow. Closeout documentation becomes asset management: as-builts, test records, and approval sign-offs are your year-six defense file, kept as long as your state's repose period runs. Insurance planning has to respect the tail — completed-operations coverage matters for years after the ribbon-cutting, and the certificate you gave the owner at closeout says so. Entity and record retention decisions ('can we dissolve the LLC that built that project?') belong on the same calendar.

Contractually, aim the clauses at the clocks: an accrual provision starting limitations at substantial completion (enforceable in many states) can meaningfully shorten the discovery-rule tail; a contractual repose shorter than the statute is sometimes negotiable; and a limitation-of-liability cap that survives into the warranty period bounds the worst case. None of these is exotic — they're just clauses nobody asks for because the myth said the exposure ended at month twelve.

Contractors who cross between commercial and residential work should know the residential tail is often longer and harder to disclaim. Most states imply a warranty of habitability or workmanlike construction in new-home sales and major residential work, running to the buyer — and in a meaningful number of states, to subsequent purchasers as well. Disclaimers are policed hard: courts routinely refuse boilerplate waivers of implied residential warranties, and several states layer statutory new-home warranty regimes (with their own one/two/ten-year structures) on top.

Right-to-repair statutes add a procedural wrinkle worth knowing in both directions: many states require homeowners to give notice and an opportunity to repair before suing, which is a real defensive tool for builders who respond properly — and a trap for those who ignore the certified letter. If your book of work includes residential, your warranty article, your closeout package, and your record-retention calendar should all be built for the residential rules of your specific states, not the commercial defaults.

One year is the length of your comeback obligation, not your liability. The true tail is set by express warranty drafting, implied warranties, and your state's limitations and repose scheme — and it commonly runs six to twelve years past completion. Contractors who understand that price warranties as products, align upstream promises with downstream backing, keep closeout records like the legal evidence they are, and negotiate the start dates and caps that shape the tail.

The myth survives because the truth is spread across three documents nobody reads together: the contract's warranty article, the supplier's warranty terms, and the state's repose statute. Reading them together is precisely what a jurisdiction-aware first pass is for — and for the project where the stakes justify it, precisely the conversation to have with construction counsel before signing, not in year four when the staining appears.