Before you begin designing your home, it’s critical to understand the importance of where you build. Climate dramatically influences how you construct a healthy home—whether your focus is keeping humidity out, managing snow loads, or capturing or deflecting sunlight. In this module, you’ll learn how to identify your building climate zone and why that matters for controlling moisture, temperature, and airflow. You’ll also learn how to evaluate and prepare your build site for long-term resilience by understanding topography, drainage, soil type, and the layout of your foundation, infrastructure, and home. From passive solar orientation to utility setup, this lesson gives you the essential site-planning tools to prevent moisture problems, reduce costs, and build a durable, healthy home from the ground up.