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  |  | BGB 632a. 3 If the customer is a consumer , and if the subject-matter of the contract is the construction or conversion of a house or comparable building , the customer must be given a security amounting to five percent of the remuneration claim on effecting the first part payment for the correct implementation of the work without major defects . If the remuneration claim increases by more than ten percent as a result of amendments to or supplements of the contract , the customer is to be given a further security of five percent of the additional remuneration claim on effecting the next part payment . At the request of the contractor , the security is to be provided by retention such that the customer retains the part payments up to the total amount of the security owed . | 
|  | GG 23. 1 With a view to establishing a united Europe , the Federal Republic of Germany shall participate in the development of the European Union that is committed to democratic , social and federal principles , to the rule of law , and to the principle of subsidiarity , and that guarantees a level of protection of basic rights essentially comparable to that afforded by this Basic Law . To this end the Federation may transfer sovereign powers by a law with the consent of the Bundesrat . The establishment of the European Union , as well as changes in its treaty foundations and comparable regulations that amend or supplement this Basic Law , or make such amendments or supplements possible , shall be subject to paragraphs ( 2 ) and ( 3 ) of Article 79. | 
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