What is the test for determining whether a latent defect in a property is patent or latent?

The first focus in applying the law relating to the purchase and sale of real property is whether the condition of the property should be classified as a patent or latent defect. The distinction turns on whether the defect should be judged as one that should have been discovered by a purchaser conducting a reasonable inspection and making reasonable inquiries. If the defect is ‘patent’, the vendor has no obligation to disclose or direct the purchaser’s attention to the particular problem or defect: Cardwell v. Perthen, 2006 BCSC 333 [Cardwell] at para 122.