Chapter 19

Conditions

Module VI: Performance & Breach

This chapter examines conditions that must occur before performance duties mature and the consequences when those events do not happen. In Helm’s Deep, the waiting for dawn offers a vivid analogy for obligations that depend on a specified triggering event.

Doctrinal map

A condition (R2d §§ 224–225) is an event that must occur before a duty arises; its non-occurrence discharges the duty rather than causing breach. The chapter teaches express conditions (interpreted strictly), constructive conditions of exchange (the basis of substantial-performance doctrine), and the dependent-covenant analysis. Kingston v. Preston is the doctrinal root. Morrison v. Bare shows the modern distinguishing move between condition and promise.

Key Sources

Key Rules

Cases

Exercise: Helm's Deep →