The document discusses building control regulations and their evolution in Paris over time. It notes that from the 17th century onwards, Parisian building facades have been regulated to maintain uniformity and order. New regulations in 1902 gave architects more freedom in designs but resulted in imbalanced facades. This led to strong pressures to abolish these regulations. Subsequently, regulations were strengthened again in the 1920s to control building heights and overhangs. A new comprehensive building code was established in 1961. The document concludes that while regulations aim to maintain quality, large parts of cities are exempted, and no permanent set of regulations can ensure good design due to pressures of growth and change.