The law of community of part owners is of significant importance for those in practice. This law is especially revalent in real estate law. There are, however, numerous other laws and obligations that are subject to the provisions of sections 741 ff. Corporate law, family law, and the law of succession as well as condominium law often refer to sections 741 ff. The Staudinger contains the most comprehensive and detailed presentation on the law of community of part owners. Due to the fact that the existing law of lottery has been significantly influenced by general lottery regulations (in effect since 1.1.2008), these regulations are also discussed in detail.