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.
The Building Safety Regulator announces a call for evidence.
Government approach could undermine delivery and regeneration.
World's first mass timber data centre.
The overlooked environmental aspect of data centre development.
Introduction to radon awareness
New technical information sheet published by CIOB.
Updated supplier guide can help electrical contractors engage with NHP.
CIAT confirm the winners of the 2026 architectural technology awards.
Government launches a one stop shop for flood preparedness.
Sir Edwin Lutyens: Britain's greatest architect? Book review.
CIOB publishes free template to help assess and manage risks.
ECA's reflections on Party Conference season
Burnham wants to be confident of winning before asking for a fresh mandate.
New Chief Construction and Scientific Adviser
Sergio Cavalaro, Professor of Infrastructure Systems at Loughborough University.
Building safety levy for England
CIAT publish estimator tool for members.