p>We have not done a return on investment study of the <strong>Kenogami House</strong>, but for a general opinion of whether or not it was worth it, I would say no, not really. That house wasn't about finding the <strong>proper balance of insulation</strong>, it was more an excercise in resilient home design and extreme <strong>passive heating</strong>. </p> <p>The house is <strong>certified LEED Platinum</strong> but also meets <strong>Passive House l</strong>evels of performance (and then some), but it does go beyond what we consider to be a resonable return on investment in terms of insulation levels. </p> <p>That said - in general, the answer is yes, you are better to increase your performance levels beyond those required by code. We don't have a specific cost analysis done but we do have an article that details the variables that should be considered, <a href="https://www.ecohome.net/guides/1207/are-better-insulated-homes-worth-the-money/" target="_blank">have a look at this link</a>, and be sure to check the comments section in that article as well. Best regards. </p