For example, in the southern United States sunshades and louvers as well as light colored building materials for roofing and cladding help to reduce the heat gain. Sustainable design also means that every inhabitant has access to outside views with natural light and natural ventilation. This sometimes results in narrower floor plans, or articulated plans which expose interior areas to several exposures. The contemporary house plan is designed with the goal of reducing fossil fuel consumption, and providing a healthier and relaxing environment.
Ranch style architecture originated in the United States in the 1920's, and it became very popular after World War II as cities expanded into suburbs and inexpensive tract homes were needed by a growing populace. Ranch style houses are most popular where land is inexpensive and the weather is mild, since these homes particularly lend themselves to outdoor living. The low, earth hugging look with clean, modern lines of the ranch style is derived from Frank Lloyd Wright's prairie style architecture.
Rootedness, simplicity, coziness, tradition, home. All these words describe the fascination for European cottage home plans in this glitzy, alienated, modern age. For people who don't like the idea of living in a cold, inhuman, ranch-style box, the romance of country living in a simpler age has infinite appeal. Originally, during the Middle Ages, cottages were the typical dwellings of farm workers and their families. The word "cottage" meant the home of a cotter, or tenant farmer, who worked on a large manor for a lord. Early cottages were not just small, stand-alone houses but also complete farmhouses with a small yard and a barn for animals. Later on, during the industrial revolution (from the eighteenth century onwards), workers would be housed in miners' cottages or weavers' cottages. Cottages were often built of stone with thatched roofs.
Aesthetics is in the eye of the beholder, and it depends upon the prevailing tastes of the time. A building's functionality, or fitness, is a matter of how well it accommodates the purposes for which it was built. Its structural integrity means soundness - will the building last over time? Historically speaking aesthetics has usually trumped fitness as the overriding factor in architectural design. Classical architecture was preoccupied with articulating features on walls and facades. Modern architecture is equally concerned with aesthetic formalities, such as form following function.