Every year, more UK buyers make CHAS accreditation a “must-have.”
Yet many firms still ask the same question: which level of CHAS is right for us?
This in-depth guide answers that question and shows how BizGrow Holdings can help you earn, keep and upgrade your certificate without drowning in paperwork.
What Is CHAS?
CHAS stands for Contractors Health and Safety Assessment Scheme.
It began as a local authority tool in 1997 and is now the UK’s best-known pre-qualification mark for health and safety.
Why it matters:
- Reputation: Clients see CHAS as proof that you respect the law and protect people.
- Tender access: Many public-sector portals block bids that lack a current CHAS or equivalent SSIP certificate.
- Risk reduction: A live CHAS audit forces you to keep policies fresh, cutting incident rates over time.
Unlike one-off audits, CHAS uses an online portal where your evidence is stored, scored and, once approved, shared with buyers.
Because the portal is cloud-based, you can update documents at any time instead of waiting for the next site visit.
How Many Levels of CHAS Are There?
Today, CHAS offers three levels: Standard, Advanced and Elite.
Each level builds on the previous one, adding broader compliance modules that buyers increasingly expect.
Think of them as steps on a ladder:
- CHAS Standard – core health-and-safety (H&S) duties recognised by SSIP.
- CHAS Advanced – Standard + quality, environmental, financial and social-value proof.
- CHAS Elite – Advanced + the full Common Assessment Standard (CAS) questionnaire.
The right level will depend on the type of work you do, the risk profile of your sites and the demands written into tender documents.
CHAS Standard | Entry Level Accreditation
CHAS Standard is your launch pad.
Its audit checks that you meet UK H&S law (primarily the Health and Safety at Work etc. Act 1974 and the Management Regulations 1999) and that you can back claims with real evidence.
Key features
- Recognised under SSIP, so one badge satisfies multiple buyers.
- Online assessment only; no intrusive site visit.
- Fastest to achieve because the document list is short.
Who Is CHAS Standard For?
- Micro-contractors (often fewer than ten staff) who need a quick pass to work as subbies.
- Start-ups entering frameworks for the first time.
- Low-risk trades such as basic maintenance, cleaning or small security patrol contracts.
In other words, if you rarely handle high-value or high-hazard sites, Standard can open doors without overloading you.
What Does the CHAS Standard Cover?
- Written H&S policy signed by top management.
- Clear organisation chart showing H&S responsibilities.
- Risk assessments and method statements (RAMS) tailored to your typical tasks.
- Evidence of staff training, for example, Emergency First Aid or SIA licences.
- Accident and incident log with improvement actions.
Notice what is not covered: quality, environment, finance, and social value.
That lightweight scope keeps the process quick, but it can leave gaps when bigger buyers ask wider questions.
CHAS Advanced | Broader Compliance Coverage
Step up to CHAS Advanced when clients want more than safety.
Advanced folds four extra compliance pillars into the same audit cycle, giving you a single badge that proves well-rounded governance.
Who Is CHAS Advanced For?
- SMEs bidding for medium- to high-risk construction or security projects.
- Contractors aiming at NHS, university, rail or airport frameworks.
- Firms facing questions around carbon, quality management or modern slavery.
What Does CHAS Advanced Cover?
Everything in Standard plus documentation for:
- Quality management (ISO 9001 style) policy, objectives and internal audits.
- Environmental controls waste transfer notes, pollution prevention, ISO 14001-style plan.
- Equal opportunities statement and evidence of fair recruitment.
- Modern slavery policy and supply-chain due diligence questionnaire.
- Financial standing: a brief overview that assures buyers you are solvent (no numeric cost figures shown, but the term ‘cost’ enters the conversation).
Advanced therefore reduces the separate questionnaires you complete for every new tender, saving admin hours and cutting duplicate fees.
CHAS Elite | The Highest Level
At the top sits CHAS Elite, essentially Advanced, plus the industry-agreed Common Assessment Standard. CAS is backed by Build UK and major customers such as HS2, Balfour Beatty and Kier.
When you pass Elite, those buyers take your compliance on trust and skip their own pre-qualification forms.
Who Is CHAS Elite For?
- Principal contractors running national frameworks.
- Security integrators safeguarding critical national infrastructure.
- FM giants that want one certificate to satisfy dozens of procurement systems.
What Does CHAS Elite Cover?
Alongside all Advanced items, you will show:
- Anti-bribery and corruption policy.
- Carbon-reduction roadmap and annual footprint data.
- Corporate Social Value (CSV) plan: community engagement, local hiring.
- Data protection and cybersecurity measures.
- Supply-chain payment practice statement.
The audit digs deeper but remains desk-based; you upload proof, a CHAS assessor validates it, and your portal dashboard turns green.
CHAS Elite and the Common Assessment Standard
The CAS bundle covers 13 modules, including finance, environment, equality and building information modelling (BIM).
Because CHAS Elite is mapped line-by-line to CAS, you do not need a second audit if a buyer asks for CAS compliance. One badge, many doors.
CHAS Levels Compared | Which One Do You Need?
Picking a level isn’t about ego; it’s about matching risk, buyer expectation and future growth.
- If you supply low-risk labour or domestic maintenance, Standard often satisfies site rules.
- If you bid for local government or NHS work, Advanced covers the extra due diligence questions.
- If you chase large capital projects or want to stop re-entering CAS data, Elite pays off fast.
Buyers rarely reject a higher-tier certificate, so some SMEs skip straight to Advanced or Elite to avoid repeating the process next year.
Look at PQQ wording:
“Contractor must hold SSIP certificate” → Standard may be enough.
“Contractor must hold Common Assessment Standard” → choose Elite.
If you are still unsure, BizGrow Holdings can review your tender pipeline and recommend the safest tier.
How to Move Between CHAS Levels
Gap review – compare your existing portal answers with the next tier’s question set.
Policy build – draft missing documents (e.g., environmental plan) using compliant templates.
Evidence gathering – upload training records, insurance schedules and supply-chain questionnaires.
Internal brief – make sure staff know new procedures; a policy nobody follows is a red flag.
Portal upgrade – pay the fee, submit evidence, and answer assessor queries promptly.
With good preparation, a leap from Standard to Advanced can take as little as two weeks; Standard to Elite usually needs four to six weeks because of the extra CAS modules.
Still, a coordinated push is cheaper than failing a tender for lack of proof.
CHAS Levels and SSIP | What Is the Link?
SSIP (Safety Schemes in Procurement) is a mutual-recognition group for health-and-safety audits. All three CHAS levels satisfy SSIP requirements. That means if a buyer only wants SSIP, any CHAS certificate will pass with no extra cost, no extra delay.
However, SSIP alone doesn’t ask about quality, environment or social value. Advanced and Elite fill that gap in one go, making them popular with buyers who need wider ESG data but still trust SSIP for safety.
How BizGrow Holdings Helps You Choose the Right CHAS Level
BizGrow Holdings has guided UK security and construction contractors since 2010.
Here’s how we keep the process smooth:
- Free discovery call – analyse contracts, buyer needs and risk profile.
- Tailored roadmap – we map your current documents against Standard, Advanced or Elite.
- Template library – ready-to-edit RAMS, quality plans, environmental registers and social-value policies.
- Portal management – we upload evidence, speak to CHAS assessors and fast-track clarifications.
- After-care – reminders for renewal dates, training refreshers and legislation updates.
Our clients often report winning higher-value contracts within months of upgrading. And because we handle the admin, your team stays focused on delivery instead of chasing paperwork.
Conclusion
The levels of CHAS give UK contractors a scalable way to prove competence:
- The standard shows strong health and safety.
- Advanced widens the scope to quality and environment.
- Elite unlocks the Common Assessment Standard and the biggest frameworks.
Pick the tier that matches today’s contracts but also supports tomorrow’s ambitions, then maintain it.
When you want expert guidance without extra payroll cost, BizGrow Holdings is ready to lead the journey from first upload to final certificate.
Frequently Asked Questions
What are the different levels of CHAS accreditation?
Standard, Advanced and Elite each add more compliance proof than the one before.
Which CHAS level do I need for public sector work?
Most councils and NHS trusts now prefer at least Advanced; major infrastructure buyers often request Elite.
Can I upgrade my CHAS level after initial accreditation?
Yes, simply add the extra documents, pay the upgrade fee and pass a short reassessment.
Is CHAS Elite the same as the Common Assessment Standard?
Elite includes every CAS module, so it satisfies buyers who ask for a CAS audit.
How long does each CHAS level take to achieve?
With prepared evidence, Standard can be approved in days, Advanced in weeks, and Elite in a few short weeks more.