Common Assessment Standard Certification
- Reduce time, cost and administrative burdens
- Accelerate supplier onboarding
- Streamline your pre-qualification process
The Trusted Assessment Standard
The Common Assessment Standard, developed by Build UK, is a certification designed to streamline and standardise the pre-qualification process. By consolidating multiple questions sets that assess suppliers into a single, industry-recognised standard, the Common Assessment Standard enhances efficiency and reduces costs for both suppliers and clients.
Compliance Chain is 1 of only 7 Recognised Assessment Bodies able to assess companies against the Common Assessment Standard.
Get CAS Certified with Confidence
Start your journey to Common Assessment Standard certification with expert support and a streamlined process. Through our Compliance Management membership, you can manage compliance, track your data and achieve CAS certification with clarity and confidence.
Certified Through Another Recognised Provider?
Establish a recognised baseline of compliance with Core certification, covering key areas like insurance, finance and risk. With alignment to CAS, Core helps you demonstrate credibility and progress towards full certification.

ConstructionLine

Achilles
Already CAS Verified with Compliance Chain?
If you currently have a Common Assessment Standard Certification with Compliance Chain, the answer is likely yes.
No need to duplicate effort. With our send function, you can share your certification data directly with other recognised assessment bodies. It’s quick, secure, and ensures your compliance is visible wherever you need it.
Simply complete the form to let us know that you would like to share your data.
Your CAS Questions Answered
Find answers to common questions about the Common Assessment Standard, including what it is, how it works and how to get certified through Compliance Chain.
What is the Common Assessment Standard (CAS)?
The Common Assessment Standard (CAS) is an industry-recognised certification that standardises pre-qualification requirements. It replaces multiple questionnaires with a single, consistent framework used by buyers and suppliers.
What are the benefits of Common Assessment Standard certification?
CAS certification reduces duplication, saves time and improves consistency across procurement. It helps organisations demonstrate compliance and makes it easier to meet buyer requirements.
How do I get Common Assessment Standard certified?
To achieve CAS certification with Compliance Chain, you’ll need a Business Management membership. From there, you can complete your assessment and manage your compliance in one platform.
How long does Common Assessment Standard certification last?
CAS certification is typically valid for 12 months. You’ll need to keep your information up to date to maintain compliance and complete your annual renewal.