When the cost approach is required, I run the Marshall and Swift Residential Cost Estimator. Nearly everyone that I do I use Replacement Cost New. Am currently working on a review for which the cost approach was completed Reproduction Cost New. The appraiser does not seem to have any comprehension of the cost approach at all, with what appears to be made up cost figures. Shouldn't the Reproduction only be used for unique or older properties for which the current building equivalent is not similar? Thanks for any feedback.