In Hungary, out of the total of some four million buildings, about 10 000 are listed, but a much larger number of constructions are seen as part of the built heritage to be preserved. Under the growing economic pressure buildings of historic value as well as whole areas of interest for the history of art and architecture have become increasingly threatened. While business interest is the cause of demolition of the historic heritage on the one hand, it is also the source of non-preferred construction and reconstruction projects violating historic monuments in a different way. The consequences of the pressure on the national organisations responsible for the preservation of the built heritage to restrict their activity to a strongly limited amount of constructions will be demonstrated on the case of Budapest – an unparalleled example of European capitals. The town presents a unity of style on an exceptional large scale and richness in form and detail as well as a throughout high average in quality which was achieved in a relatively short time span around 1900. The roots of this stylistic unity are various, on the other hand its impact was general in the whole of the country, and is to be well perceived in different forms even today. Sacrificing the seemingly not important or second grade, results in loosing the texture, the context and a whole layer of history.