Preserving evidence

What preserving evidence actually means

The evidence in a construction defect claim is usually the defect itself: the cracked slab, the leaking wall assembly, the roof membrane that failed. Once you tear it out, patch it, or paint over it, nobody gets a second look, not your expert, not the contractor's expert, not a judge. A building's work in place is often the single best proof of whether it was built correctly.

"its work in place may be the best evidence to show the work was performed properly or that any claimed defects are not as severe or pervasive as claimed"

Source: My Building is Evidence? The Line Between Repairs and Spoliation of Evidence, American Bar Association, Forum on Construction Law

The default rule, and the one exception

Before you alter, remove, or repair anything you plan to claim was defective, give the party you might blame, the contractor, the developer, their insurer, written notice and a fair chance to inspect it first. That duty to preserve applies even before you have decided whether to sue. The one recognized exception is a genuine, immediate safety hazard: active structural failure, a gas leak, exposed wiring. There, fix it first, but still notify stakeholders and document the condition with photos or video before anyone touches it, if the situation allows even a few minutes to do so.

"If litigation seems likely, prioritize evidence preservation over immediate repairs unless safety is at risk."

Source: Don't Spoil It: The Line Between the Need for Repairs and Spoliation of Evidence, Koley Jessen

Some states turn this into a legal requirement, others don't

Whether a statute forces this notice and inspect step, how long you must wait, and what happens if you skip it, vary by state. California, Nevada, Colorado, and Texas each require written notice and give the other side a window to inspect before an association can sue, but the four statutes set different timelines and different penalties. Under Nevada's notice statute, a claimant who never gives the contractor a reasonable chance to inspect and repair is barred from recovering damages for that defect. Under California's statutory process, the opposite protection applies: nothing that happens during a compliant builder inspection or repair can later be used to argue the claim was spoliated. Find out early whether your state has a statute like this, before anyone touches the defect.

What getting it wrong costs you

Skip notice, and you are relying entirely on judge made spoliation doctrine to protect your claim, a far less predictable place to be. Courts in multiple states have issued adverse inference instructions against a party that altered evidence without warning, and the most severe sanction available is dismissal of the claim outright.

"A finding from a court that you spoliated evidence poses a potentially devastating threat to your legal team's ability to prove the existence of defective work."

Source: Beyond Repair: Your Duty to Preserve Evidence Ahead of Construction Defect Litigation, ConsensusDocs

Before any work begins, whatever the trigger, put your notice in writing, document the current condition with dated photos, and loop in a forensic engineer or the association's attorney early so the record you build will hold up later.