To determine the orientation of a purchased house, start by using a digital compass or GPS-enabled device to identify the cardinal directions (north, south, east, west). Next, observe the house’s layout: the primary entrance, living areas, and windows. Homes oriented towards the south or southeast typically receive the most sunlight, enhancing natural light and warmth. Check for consistent sunlight exposure in key rooms during different times of the day. For example, south-facing windows maximize passive solar heating, reducing reliance on artificial lighting and heating. Additionally, assess the roof slope and surrounding terrain, as steep slopes or dense tree cover can alter effective orientation.

The importance of orientation lies in its impact on energy efficiency, comfort, and property value. A south-facing home can reduce heating and cooling costs by up to 20%, as noted by the U.S. Department of Energy. Sunlight exposure also correlates with higher user satisfaction, with studies showing that well-lit interiors improve mental well-being and productivity. Data from the National Association of Realtors indicates that homes with optimal orientation command 5–8% higher listing prices due to perceived energy savings and lifestyle benefits. Incorrect orientation may lead to higher utility bills and reduced resale appeal. For instance, north-facing homes often require artificial lighting during colder months, increasing energy consumption. Thus, verifying orientation during a purchase ensures long-term cost savings and enhances livability.