Do I need to hire an expert witness for a defect claim?

For anything involving a structural issue or a building code violation, the honest answer is generally yes. A qualified contractor or engineer who can testify credibly about the applicable standard of care, meaning what a competent contractor in that trade should have done, and about the actual cost of proper repair, is typically necessary evidence at this claim size to establish both what went wrong and what it will genuinely cost to fix.

It's important to budget realistically for this cost from the outset, typically somewhere between $2,000 and $5,000 for a credible expert report and potential testimony. This is a real, unavoidable expense that factors meaningfully into whether pursuing a smaller claim, say one in the $15,000 range, actually makes financial sense once expert costs are weighed against the potential recovery.