Can Utah contractors use estimates to prove costs in cost-plus contracts? Hale v. Big H Construction Explained

In construction disputes involving cost-plus contracts, contractors often face challenges proving actual costs incurred. The Utah Court of Appeals addressed this issue in Hale v. Big H Construction, Inc., clarifying what evidence contractors may use to establish damages.

Background and Facts

The Hales contracted with Big H Construction to build two custom homes under a cost-plus arrangement, paying all reasonable costs plus a ten percent builder’s fee. When disputes arose and Big H filed a mechanics’ lien for $165,000 in unpaid fees, the Hales sued for breach of contract. Big H counterclaimed for the unpaid builder’s fee. At trial, Big H presented extensive documentation including invoices from dozens of vendors and expert testimony using industry cost data and R.S. Means construction cost indices to verify that costs were reasonable.

Key Legal Issues

The central issue was whether Big H could prove its costs using expert estimates and industry averages rather than solely actual invoices and payment documentation. The Hales argued that cost-plus contracts require proof of actual expenditures only, citing cases from other jurisdictions. They also challenged various aspects of the damage calculation and sought offsets for allegedly unfinished work.

Court’s Analysis and Holding

The court relied on Traco Steel Erectors, Inc. v. Comtrol, Inc., which established that Utah contractors are not restricted to “primary documentation of actual cash outlays” when proving contract damages. The court explained that “the desired objective is to evaluate any loss suffered by the most direct, practical and accurate method that can be employed.” The central inquiry is “whether the evidence was sufficient; not whether it was perfect.” Here, Big H provided extensive actual cost documentation supplemented by expert testimony using industry standards to verify reasonableness.

Practice Implications

This decision provides important guidance for construction practitioners. Contractors in cost-plus arrangements may combine actual invoices with expert testimony and industry cost data to prove damages. However, the strength of such evidence depends heavily on credibility determinations—here, the trial court found the Hales’ expert unreliable while crediting Big H’s documentation. Practitioners should focus on challenging specific factual findings for clear error rather than attacking permissible methodologies for proving costs, as Utah law allows flexible evidence standards in construction damage cases.