Jay Gruden discusses the importance of quick access to hot water in a custom home building project. By strategically placing the water heater and implementing a motion sensor-activated recirculation pump system, clients can have hot water within seconds at various points in the house. This system reduces water waste and provides convenience for the homeowners. The simplicity and effectiveness of the system showcase the builder's commitment to delivering what is important to their clients. The Build Show Network podcast, featuring building experts discussing building science and business, is also mentioned as a valuable resource for builders.