Whether the subcontractor's negligent damage to K & G's house was a material breach that entitled K & G to withhold the progress payment due under the subcontract.
Holding
Yes. The promises of workmanlike performance and progress payment were mutually dependent, and the subcontractor's negligent, materially defective performance justified K & G's refusal to make the August 10 payment.
Reasoning
The Court began with the distinction between independent and dependent contractual promises. Although parties may make promises enforceable without regard to the other side's performance, modern contract law generally presumes that reciprocal promises are dependent when that construction fits the parties' intent. That intent is determined from the entire agreement, the nature of the transaction, and the circumstances surrounding it.
Here, the subcontract expressly made the subcontractor's workmanlike performance a condition that preceded K & G's monthly payment obligation. Progress payments did not transform the construction agreement into a series of wholly independent contracts. Treating payment as due regardless of the quality of the work would force a general contractor to continue financing defective performance and leave it only to later litigation for relief.
The bulldozer operator's negligent destruction of part of K & G's house breached the subcontractor's express promise to perform in a workmanlike manner and according to best practices. The breach was material because the $3,400 loss was more than twice the amount of the progress payment that became due on August 10. K & G therefore could withhold that payment while treating the subcontractor's breach as partial rather than immediately ending the contract.