Assessment and Verification of Constancy of Performance system AVCP
The UK government 'Construction Products Reform Green Paper 2025' published 26 February 2025, and the Construction Products Reform White Paper published 26 February 2026 defines Assessment and Verification of Constancy of Performance (AVCP) as 'A harmonised system defining how to assess products and control the constancy of the assessment results.'
The European Commission defines Assessment and Verification of Constancy of Performance (AVCP) as 'a harmonised system defining how to assess products and control the constancy of the assessment results. This system safeguards the reliability and accuracy of the Declaration of Performance. Five different systems are in place for construction products in the Construction Products Regulation. They range from large-scale third party involvement to self-declaration and monitoring by the manufacturer. The European Commission establishes which systems are applicable for:
- a construction product;
- a family of construction products;
- an essential characteristic.
The harmonised technical specifications (harmonised European standards and European Assessment Documents) include the technical details for the implementation of the AVCP system.'
[edit] Related articles on Designing Buildings
- Articles about products and services.
- Attestation.
- Attestation of conformity.
- BBA becomes an Approved Body for UKCA Marking.
- British Board of Agrément.
- British Standards.
- Building activities definition.
- Building complex.
- Building component.
- Building element.
- Building entities.
- Building spaces definition.
- Building system.
- By-product.
- CE marking.
- Certificate of Constancy of Performance COCOP.
- CE marking.
- Co-product.
- Constituent construction product.
- Construction Products Regulations.
- Construction Products Regulation if there is no Brexit deal.
- Construction Products Reform Green Paper and Consultation.
- Deadline for CE marked products extended to 1 January 2023.
- Energy related products regulations.
- European Technical Approval.
- Intermediate product.
- Kitemark.
- Manufacturer.
- Manufacturer’s certificate.
- National construction products regulator established.
- Office for Product Safety and Standards OPSS.
- Product manufacturers must regain confidence.
- Products v goods v materials.
- Standards.
- Sundry items.
- The Construction Industry Council summarises what to expect from the Construction Products Regulations.
- Third party accreditation.
- UK Conformity Assessed UKCA.
- United Kingdom Accreditation Service UKAS.
Featured articles
Check out some of the best features and news from Designing Buildings as well as key stories from around the web.
Construction Management, 8 July
NEETs crisis drives interest in trades, but apprenticeships barriers remain.
Passive fire protection webinar
MEP services penetration seals.
Where its at podcast (and video) - The role of the Architectural Technologist as an Expert Witness.
More than 200 remarkable buildings added to SAVE’s Buildings at Risk register.
Government scraps pre-application consultation for Nationally Significant Infrastructure Projects.
Historic England and infrastructure
New projects offer opportunities for the historic environment and local communities.
Construction Management, 2 July
Construction deaths halve in two years.
Green Book changes to drive investment in all parts of UK.
Minimum energy efficiency standards (MEES)
CIAT briefing on response to consultations for privately rented non-domestic properties.
Connect, collaborate, shape the future
Registration now live for UK Construction Week Birmingham.
CIOB announces Saul Humphrey FCIOB as new President for 26/27 term.
A quick, simple, and zero-bills solution to prevent overheating.