The purchaser sought partial summary judgment declaring an agreement of purchase and sale for residential property enforceable and claiming damages for breach when the vendors refused to close.
The vendors argued the agreement should be rectified to reflect that the sale was conditional on the simultaneous purchase of an adjacent property and further argued the purchaser failed to provide notice of waiver of conditions in accordance with the contract.
The court held that the vendors failed to meet the demanding test for rectification based on unilateral mistake because there was no convincing proof of a prior precise oral agreement and no conduct equivalent to fraud by the purchaser.
However, the purchaser’s waiver of conditions was ineffective because the agreement required personal service of notice and the contract’s entire‑agreement clause precluded waiver by conduct.
As a result, the agreement was never completed according to its terms and could not be enforced.