The Spanish residential real estate sector is arousing some debate in recent times, given the uninterrupted rise in prices in recent years. In this report, we run a historical analysis of fifteen key variables to estimate the potential duration of the current bullish cycle. This is no trivial matter, since it will significantly impact the financing and investment decisions of real estate developers, banks and institutional investors. We conclude that the upward cycle should last longer than the consensus expects. And we argue, in an structured and visual manner, that our thesis is supported by no less than fifteen compelling reasons, which lead us to relevant conclusions about investing in real estate, either in debt or equity.