What is the ratio in Guest v Guest?

Proprietary estoppel remedies should be proportionate to the claimant's detriment and unconscionability suffered, rather than automatically fulfilling the defendant's promise or the claimant's expectation.

What did the court decide in Guest v Guest?

The Supreme Court held that Andrew was entitled to a remedy but remitted the case to determine a proportionate remedy based on his detriment rather than his expectation of inheriting the entire farm.

Why is Guest v Guest important for Land Law?

It's a landmark Supreme Court decision that clarified the approach to proprietary estoppel remedies, establishing proportionality as key and distinguishing expectation-based from reliance-based approaches.

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