The Contractors Health and Safety Assessment Scheme
Welcome to the Contractors Health and Safety Assessment Scheme (CHAS). We are dedicated to completing health and safety pre-qualification assessments to a nationally recognised and accepted threshold standard

CHAS has changed its addresses.

Initial enquiries should be addressed to

Price Changes 2014

During 2009 CHAS reduced its prices in order to offer some level of support to small business as the recession took a hold.

In 2012 we reduced prices as annual assessments came into being, again because we wished to support business through these changes. We have absorbed price increases ourselves and frozen pay increases for all of the staff and assessors since 2009.

From 1st April 2014 we are increasing the basic fee by £10 in order to move back towards the pricing points of 2009, so that we can correct some of the anomalies that have occurred in the intervening period. All other prices will be increased in line with the basic fee.

A new schedule of charges is on the ‘FEES’ page.

Need help with your CHAS registration?

All of our assessors are friendly, qualified, competent Health & Safety officers who are committed to improving Health & Safety, and pride themselves in guiding companies in the right direction. Find out more or apply now

The fastest growing Health and Safety assessment scheme in the UK

With 570 buyer members and over 50,000 suppliers on its database, CHAS is not only the largest but also the fastest growing health and safety assessment scheme in the UK.
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Engineers shaking hands

About CHAS

CHAS is established as the market leader for health and safety pre-qualification in the UK. It is available to suppliers (those who provide goods and services) and to organisations (buyers) looking for suitably competent suppliers.

CHAS is a founder member and past Chair of Safety Schemes in Procurement – Competence Forum or SSIP. Please go to or click here for full details.

Roofers at work


CHAS isn’t just for construction companies, it assesses health and safety for all types of suppliers, from care services to demolition contractors, designers and consultants. The aim of the scheme is to save time and resources by avoiding unnecessary duplication in the first stage of competence assessment; the CDM Core criteria.

Developer and foreman


Membership includes the public sectors: health trusts, emergency services and government departments and large private companies who have a supply chain, for example Royal Mail Group, Kier and Mitie Group. Ultimately we complete the initial H&S application process for buyers, saving time and resources for all involved in the process.

If you think you may be eligible please complete the request for buyer access form. A member of the CHAS team will make contact within three working days.

CDM 2007

Our scheme fully reflectss the stage one requirements of assessing competence under CDM 2007