Worked example 1
A builder contracts to build a swimming pool for a homeowner for £70,000, specifying a diving depth of 7 feet 6 inches. Upon completion, the pool is only 6 feet deep at that point, but is otherwise perfectly safe for swimming. The value of the property has not decreased. The cost to demolish and rebuild the pool to the correct depth (the 'cost of cure') is £21,560. Calculate the likely damages.
Show solution outline
This scenario mirrors the facts of Ruxley Electronics v Forsyth.
Step 1: Identify the possible measures of loss. The two main measures are 'Cost of Cure' and 'Diminution in Value'.
Step 2: Calculate each measure.
- Cost of Cure: The cost to fix the defect is given as £21,560.
- Diminution in Value: The difference in the property's market value is £0.
Step 3: Apply the test of reasonableness from Ruxley v Forsyth. The court must decide if awarding the cost of cure is reasonable and proportionate to the benefit gained. Here, spending £21,560 (over 30% of the contract price) to gain an extra 1.5 feet of depth, when the property value is unaffected and the pool is still usable, is likely to be deemed wholly disproportionate and unreasonable.
Step 4: Consider 'Loss of Amenity'. Since awarding £21,560 is unreasonable and awarding £0 would not compensate the homeowner for their genuine disappointment and loss of a specific contractual promise (the 'consumer surplus'), the court will award a sum for 'loss of amenity'.
Final Answer: The court is unlikely to award the full £21,560. Instead, a smaller sum will be awarded for loss of amenity. In the actual Ruxley case, this was £2,500. This figure represents a fair compensation for the non-financial loss without being punitive to the builder.