Contractors Bonding Ltd v Snee - [1992] 2 NZLR 157

Equity — Unconscionable bargain — Undue influence — Guarantee — Mother guaranteed her son's liability under a bond by a mortgage over her house — Mother, who was under a mental disability, was under influence of her son — Bonding company had no knowledge of mother's impairment — Whether son was agent of bonding company in obtaining execution of guarantee and mortgage — Whether son's knowledge of his mother's impairment should be imputed to bonding company — Whether bonding company had acted unconscionably — Whether bonding company was entitled to exercise its powers under mortgage.