CHAS v Constructionline how do you decide?

CHAS vs Constructionline: Which Accreditation Do You Need? (2026 Guide)

Quick Answer

CHAS and Constructionline are both UK contractor accreditation schemes used to demonstrate health and safety compliance.

• CHAS focuses primarily on health & safety and SSIP compliance
• Constructionline combines health & safety with supplier verification, financial checks, and procurement tools

The right choice depends on your clients, sector, and tender requirements. How to get CHAS.

What is the Difference Between CHAS and Constructionline?

CHAS (Contractors Health and Safety Assessment Scheme)

• Health & safety focused
• SSIP accredited
• Recognised by public and private sector clients
• Often required for site access and contractor approval

Best for:

• Contractors needing SSIP compliance
• Businesses working with main contractors or local authorities

Constructionline

• Broader pre-qualification platform
• Includes:
  • Health & safety (via SSIP at higher levels)
  • Financial checks
  • Company verification
• Acts as a supplier database for buyers

Best for:

• Contractors bidding for larger frameworks and tenders
• Businesses needing visibility to buyers

Key Differences (Simple Comparison)

Which One Do Clients Prefer?

It depends on the client:

• Main contractors / local authorities
  → Often ask for CHAS or SSIP
• Large frameworks/procurement platforms
  → Often specify Constructionline

Some clients accept either, as both align with SSIP standards

Cost Comparison (Overview)

• CHAS: Typically £400–£3,000+ per year
• Constructionline: Typically £498+ depending on level

Costs vary based on:

• Business size
• Level of accreditation

Do You Need Both?

No one is enough

BUT:

• Some contractors choose both to maximise opportunities
• Certain clients specify one by name

When to Choose CHAS

Choose CHAS if you need to:

✔ Meet SSIP requirements
✔ Get approved for site work
✔ Demonstrate health & safety compliance
✔ Work with public sector or main contractors

When to Choose Constructionline

Choose Constructionline if you want to:

✔ Access procurement platforms
✔ Pass financial and supplier checks
✔ Bid for larger contracts
✔ Increase visibility to buyers

Pro Tip (Most Contractors Miss This)

All SSIP schemes (including CHAS and Constructionline )
follow the same core health & safety criteria

This means:

You may not need to duplicate applications.
You can often use one accreditation to support another

Final Thought

CHAS proves you are safe and compliant.
Constructionline helps you get found and win work

The best choice depends on:

• Your clients
• Your sector
• Your growth strategy

Frequently asked questions

What is the difference between CHAS and Constructionline?

CHAS focuses mainly on health and safety compliance and SSIP accreditation, while Constructionline is a broader pre-qualification platform that includes financial checks, supplier verification and procurement visibility.

Is CHAS better than Constructionline?

Neither CHAS nor Constructionline is better overall. CHAS is better for demonstrating health and safety compliance, while Constructionline is better for accessing procurement opportunities and supplier databases. The right choice depends on your client’s requirements.

Do I need CHAS or Constructionline?

You may only need one accreditation, depending on your clients. Many contractors choose CHAS to meet SSIP requirements, while others choose Constructionline for tendering and visibility. Some businesses use both to maximise opportunities.

Is Constructionline SSIP accredited?

es. Constructionline Gold includes SSIP accreditation, meaning it meets the same core health and safety criteria as schemes like CHAS.

“Is CHAS part of SSIP?

Yes. CHAS is a founding member of SSIP and provides recognised health and safety accreditation that aligns with SSIP standards.

Which is cheaper, CHAS or Constructionline?

Costs vary depending on company size and level. CHAS typically costs from around £400 per year, while Constructionline starts from around £498 per year, with higher tiers costing more.

Can I have both CHAS and Constructionline?

Yes. Many contractors hold both CHAS and Constructionline to meet different client requirements and increase their chances of winning work.

Which accreditation do main contractors prefer?

Main contractors and local authorities often require CHAS or another SSIP scheme for health and safety compliance. Some larger frameworks and procurement systems may specify Constructionline.

Related CHAS Guides

• How to get a CHAS 
• What is CHAS accreditation
• CHAS assessment criteria checklist
• CHAS cost
• Common reasons CHAS fails
• CHAS v constructionline
• Do I need to be a CHAS-accredited contractor
• CHAS registration
• CHAS renewal
• SSIP accreditatition and CHAS
• CHAS deem to satisfy
• CHAS training guidance
• Quick guide to CHAS
• CHAS support