Build UK and CECA are delivering an action within the Construction Sector Deal to establish a new Common Assessment Standard which will improve efficiency and reduce cost in the construction pre-qualification (PQ) process.

This is the first phase of implementation and includes publication of the Common Assessment Standard and recognition of the first assessment bodies to certify companies against the standard.

Once the new system is fully up and running, companies will be certified once a year by a recognised assessment body and this should be accepted by Clients and Contractors who will no longer need to specify a particular assessment body.


Common Assessment Standard

The Common Assessment Standard comprises an industry-agreed question set based on existing PQ questionnaires, including PAS 91, and corresponding assessment standards.

There are two levels of certification: desktop and site-based. Companies can now apply to a recognised assessment body for the certification level that is most appropriate for their business based on a range of factors including trade, size and the requirements of their clients.

For companies that employ less than five employees and have a turnover below £500,000, the assessment standards will be applied in a proportionate way.

A guide to the question set has been published to help companies prepare for an audit by a recognised assessment body.

To submit any suggested changes, please complete this form.

Recognised Assessment Bodies

The following assessment bodies have been recognised to certify companies against the Common Assessment Standard and have aligned existing or new products accordingly.

Common Assessment Standard Achilles CHAS Constructionline
Desktop BuildingConfidence CAS Desktop Assessment CHAS Premier (CAS) Constructionline Gold
Site-Based BuildingConfidence CAS Site Assessment CHAS Premier (CAS) Assured Constructionline Platinum

All recognised assessment bodies have demonstrated their capability to audit companies against the Common Assessment Standard.

Any organisation interested in becoming a recognised assessment body should email