# Regulation (EU) No 305/2011 of the European Parliament and of the Council of 9 March 2011 laying down harmonised conditions for the marketing of construction products and repealing Council Directive 89/106/EEC (Text with EEA relevance), Article 4: Declaration of performance

Extent: E+W+S+N.I.

1. When a construction product is covered by a designated standard or conforms to a UK Technical Assessment which has been issued for it, the manufacturer shall draw up a declaration of performance when such a product is placed on the market.
2. When a construction product is covered by a designated standard or conforms to a UK Technical Assessment which has been issued for it, information in any form about its performance in relation to the essential characteristics, as defined in the applicable harmonised technical specification, may be provided only if included and specified in the declaration of performance except where, in accordance with Article 5, no declaration of performance has been drawn up.
3. By drawing up the declaration of performance, the manufacturer shall assume responsibility for the conformity of the construction product with such declared performance. In the absence of objective indications to the contrary, ... the declaration of performance drawn up by the manufacturer shall be presumed to be accurate and reliable.

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Source: https://www.legislation.gov.uk/eur/2011/305/article/4 (the official version)
Page: https://openlegislation.uk/eu-regulation-2011-305/article-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.