Do I need to be a CHAS accredited contractor?

Do You Need to Be a CHAS Accredited Contractor?

If you’re self-employed or running a small construction business, a common question is:

“Do I actually need CHAS accreditation to work?”

The honest answer is: it depends on the type of work you do and who you work for.

Quick Answer

• Domestic work only? → No, not strictly required
• Working for contractors, councils, or commercial clients? → Yes, almost always required
• Want to win more contracts? → CHAS or SSIP is essential
• If you’re not accredited yet, start with our CHAS accreditation step-by-step guide.

Domestic Market

If you only work directly for homeowners:

• You are not legally required to have CHAS accreditation
• Most domestic clients won’t ask for it

However, don’t mistake this for no responsibility.

Under UK health and safety law, you still have a duty of care to:

• Yourself
• Anyone working with you
• Members of the public

If something goes wrong (accident, injury, unsafe work), you are still liable, with or without CHAS.

Bottom line: You can operate without CHAS in domestic work, but you still need proper safety systems in place.

Construction & Commercial Market

If you want to work in the wider construction industry:

CHAS (or equivalent) becomes essential.

Main contractors, developers, housing providers, and local authorities will almost always require:

• Proof of health & safety compliance
• A recognised accreditation standard
• Evidence before allowing you on-site

The most widely recognised scheme is:

• CHAS

But it’s part of a wider system called:

• Safety Schemes in Procurement

All SSIP schemes assess the same core criteria, including:

• Constructionline
• SMAS Worksafe
• SafeContractor

This means:

You don’t have to choose CHAS, but you must have an SSIP accreditation to compete.

Does Business Size Matter?

Yes, especially when it comes to compliance requirements.

Sole traders & businesses under 5 employees

• You still need health & safety systems
• You can get CHAS / SSIP accreditation
• You don’t legally need a full-time safety advisor

Businesses with 5+ employees (including subcontractors)

• You must have access to a competent health & safety advisor
• This is a legal requirement under:
  • Management of Health and Safety at Work Regulations 1999

Most small contractors meet this by using a retained (outsourced) competent person service

What Does CHAS Actually Assess?

CHAS (and all SSIP schemes) measure your business against core health & safety standards.

These include:

• Health & Safety Policy
• Access to Competent Advice
• Training and Competence
• Risk Assessments & Method Statements (RAMS)
• Monitoring, Audit & Review
• Workforce Engagement
• Accident Reporting & History
• Subcontractor Management
• Cooperation & Communication
• Welfare Provision
• Hazard Identification & Control

In simple terms, CHAS proves your business can work safely and professionally on construction projects.

Why Most Contractors Choose CHAS Anyway

Even if it’s not mandatory for your current work, many contractors get accredited because it:

• Opens doors to higher-value contracts
• Helps you pass pre-qualification questionnaires (PQQs)
• Builds trust with clients instantly
• Reduces repeated compliance checks

Final Verdict

• Domestic-only work? CHAS is optional, but safety compliance is not
• Construction or commercial work? CHAS or SSIP is effectively required
• Want to grow your business? Accreditation becomes a competitive advantage
• To stay compliant, it’s important to understand CHAS renewal requirements each year.

Simple Rule to Remember

No CHAS = limited opportunities
CHAS (or SSIP) = access to the real construction market

Need help maintaining your status? Our CHAS support service is here to help.

Frequently asked questions

Do I need to be a CHAS accredited contractor?

You do not normally need CHAS accreditation if you only work directly for domestic homeowners. However, if you want to work for main contractors, commercial clients, housing providers, developers or local authorities, CHAS or another SSIP accreditation is often required before you can start work.

Is CHAS a legal requirement?

CHAS accreditation itself is not a legal requirement. However, UK contractors still have legal duties to manage health and safety. CHAS helps demonstrate that your business has suitable health and safety arrangements in place.

Do domestic contractors need CHAS accreditation?

Domestic contractors are rarely asked by private homeowners for CHAS accreditation. However, they still have a duty of care to protect themselves, workers, subcontractors and members of the public from harm.

Do small contractors need CHAS accreditation?

Small contractors often need CHAS accreditation to work in the commercial construction market. Main contractors, local authorities and larger clients commonly require CHAS or another SSIP certificate before allowing subcontractors onto the site.

Can I use another SSIP scheme instead of CHAS?

Yes. CHAS is one SSIP accreditation provider, but other schemes, such as Constructionline, SafeContractor, SMAS, CQMS, and PQS, can also assess contractors against the same SSIP core criteria. The right choice depends on what your client or tender requires.

Do I need a competent health and safety advisor for CHAS?

If you employ five or more people, including subcontractors or self-employed workers under your control, you must have access to competent health and safety advice. Many small contractors meet this requirement by using an outsourced competent person service.

What does CHAS check?

CHAS checks whether your business has suitable health and safety arrangements. This includes your health and safety policy, competent advice, training records, risk assessments, method statements, accident reporting, workforce involvement, subcontractor management and welfare arrangements. Review the CHAS assessment criteria.

Why do main contractors ask for CHAS?

Main contractors use CHAS because they must control health and safety risks across their supply chains. CHAS gives them evidence that a subcontractor has been assessed against recognised SSIP health and safety standards.

Related CHAS Guides

• If you’re not accredited yet, start with our CHAS accreditation step-by-step guide.
• To stay compliant, it’s important to understand CHAS renewal requirements each year.
• Need help maintaining your status? Our CHAS support service is here to help.