> For clean Markdown of any page, append .md to the page URL. > For a complete documentation index, see https://tieback.io/docs/llms.txt. > For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://tieback.io/docs/_mcp/server. # Declaration of Performance and Conformity > The declaration required by Articles 13 to 16 of Regulation (EU) 2024/3110, in which a construction product manufacturer states the product performance in relation to essential characteristics and its conformity with applicable requirements, using the model in Annex V. ## Definition The declaration that a manufacturer of a construction product must draw up under Article 13 of Regulation (EU) 2024/3110 where the product is covered by a harmonised technical specification adopted in accordance with Article 5 or Article 6, or where a European Technical Assessment has been issued for it. Its content is set by Article 15 and follows the model in Annex V. By drawing it up, the manufacturer assumes responsibility for the conformity of the product with the declared performance and with applicable requirements. ## Expanded Explanation The instrument replaces and extends the declaration of performance familiar from Regulation (EU) No 305/2011. The extension is in the name: the new declaration covers both **performance**, expressed in relation to essential characteristics, and **conformity** with applicable product requirements. Article 15(1) requires performance to be expressed in relation to the essential characteristics set by the relevant harmonised technical specification or European assessment document, and requires the declaration to state where product requirements adopted under Article 7 have been demonstrated. Article 15(2) adds environmental content: the declaration must include the product's environmental sustainability performance over its life cycle for the predetermined environmental essential characteristics listed in Annex II that are declared, calculated using software the Commission makes available free of charge, with updates to that software becoming mandatory one year after publication. The declaration does not stand alone. Article 22(3) requires technical documentation to be drawn up as its basis, indicating the declared use, the elements necessary to demonstrate performance and conformity, the applicable assessment and verification system under Annex IX and any simplified procedures used under Articles 59 to 61. Article 16 governs how the declaration is supplied and provides for Commission guidelines under Article 16(3). Article 14 provides exemptions from drawing one up at all. ## Why It Matters The declaration is the legal centre of gravity for construction product compliance, and it is now also the centre of the construction digital product passport. Article 76(2)(a)(i) of the same Regulation places the declaration, including the Article 15(6) information and the documentation supplied with it under Annex V, inside the passport. Article 77(1)(h) requires the version in the passport to follow the Article 16(3) guidelines. Whatever quality your declaration has today is the quality your passport will publish. ## Relationship to Digital Product Passports The passport does not replace the declaration; it distributes it. Where an Article 14 exemption removes the duty to draw up a declaration, Article 76(4) correspondingly removes the passport obligation. The passport duty follows the declaration duty. ## Common Misconceptions #### It is the same thing as an EU declaration of conformity The EU declaration of conformity under other Union harmonisation legislation asserts conformity with requirements. The construction declaration additionally declares measured or calculated performance against essential characteristics, which is a different kind of statement. #### The digital product passport replaces it Article 76(2)(a)(i) publishes it. Articles 13 to 16 still require it to be drawn up. #### It can be written without technical documentation Article 22(3) requires technical documentation as the basis for the declaration. A declaration without it is unsupported. ## Related Terms * [Technical Documentation](/docs/knowledge-base/glossary/technical-documentation) * [Harmonised Technical Specification](/docs/knowledge-base/glossary/harmonised-technical-specification) * [Harmonised Standard](/docs/knowledge-base/glossary/harmonised-standard) * [EU Declaration of Conformity](/docs/knowledge-base/glossary/eu-declaration-of-conformity) * [Conformity Assessment](/docs/knowledge-base/glossary/conformity-assessment) * [Notified Body](/docs/knowledge-base/glossary/notified-body) * [Economic Operator](/docs/knowledge-base/glossary/economic-operator) ## Related Knowledge Base Articles * [Digital Product Passports for Construction Products: What Companies Need to Know](/docs/knowledge-base/industry-guides/digital-product-passports-for-construction-products) * [How Conformity Assessment Works for Digital Product Passports](/docs/knowledge-base/regulations/how-conformity-assessment-works-for-digital-product-passports) * [Who Is Legally Responsible for a Digital Product Passport?](/docs/knowledge-base/regulations/who-is-legally-responsible-for-a-digital-product-passport) ## Related Articles * [Harmonised Technical Specification](/docs/knowledge-base/glossary/harmonised-technical-specification) * [Battery Passport](/docs/knowledge-base/glossary/battery-passport) * [Authorised Representative](/docs/knowledge-base/glossary/authorised-representative) * [Conformity Assessment](/docs/knowledge-base/glossary/conformity-assessment) * [Corrective Action](/docs/knowledge-base/glossary/corrective-action) * [Delegated Act](/docs/knowledge-base/glossary/delegated-act) * [Economic Operator](/docs/knowledge-base/glossary/economic-operator) * [Entry into Force](/docs/knowledge-base/glossary/entry-into-force) ## See Also * [Industry Guides](/docs/knowledge-base/industry-guides/overview) * [Regulations](/docs/knowledge-base/regulations/overview) ## References * Regulation (EU) 2024/3110 laying down harmonised rules for the marketing of construction products, OJ L, 2024/3110, 18.12.2024: [https://eur-lex.europa.eu/eli/reg/2024/3110/oj](https://eur-lex.europa.eu/eli/reg/2024/3110/oj) * Regulation (EU) No 305/2011 laying down harmonised conditions for the marketing of construction products: [https://eur-lex.europa.eu/eli/reg/2011/305/oj](https://eur-lex.europa.eu/eli/reg/2011/305/oj) ## About This Article About This Article
Last Reviewed
2026-08-09
Next Scheduled Review
2027-08-09
Article Version
1.0
tieback Knowledge is a continuously maintained reference library covering Digital Product Passports, product traceability, product compliance and related regulations. Articles are reviewed regularly as legislation, standards and implementation guidance evolve. ## Related Docs * [Industry Guides](/docs/knowledge-base/industry-guides/overview) * [Regulations](/docs/knowledge-base/regulations/overview) * [Glossary](/docs/knowledge-base/glossary/overview)