CHAS Accreditation Explained: Requirements, Costs and Process for UK Contractors

What is CHAS?

For UK contractors operating across construction, facilities management, engineering, and maintenance, proving your commitment to workplace safety is an indispensable commercial requirement. At the forefront of this compliance ecosystem stands CHAS (the Contractors Health and Safety Assessment Scheme). Established in 1997 by a dedicated group of local authority health and safety professionals, CHAS was created to solve a widespread administrative burden: the constant duplication of health and safety pre-qualification questionnaires (PQQs) across public and private sector procurement.

Today, managed by Veriforce CHAS, the scheme has grown into one of the largest and most recognised compliance and supply-chain risk management organisations in the United Kingdom. With tens of thousands of accredited contractors and hundreds of major client organisations—including tier-one main contractors, commercial property managers, housing associations, and local authorities—CHAS certification serves as an immediate, verified benchmark of an organisation’s safety competence and legal compliance.

Crucially, CHAS is a founding member of SSIP (Safety Schemes in Procurement). SSIP is the umbrella body backed by the Health and Safety Executive (HSE) that facilitates mutual recognition between health and safety assessment schemes. By gaining approval with CHAS, your business automatically meets the core health and safety criteria recognized by other leading assessment bodies, including SafeContractor accreditation and SMAS Worksafe, drastically reducing repetitive paperwork during tendering.

Who Needs CHAS Accreditation?

While historically rooted in local authority housing and public works contracting, CHAS accreditation has expanded across virtually all contracting and sub-contracting disciplines. If your business regularly tenders for commercial contracts, acts as a tier-2 or tier-3 subcontractor on live sites, or provides outsourced facility services, holding CHAS is frequently an explicit contractual prerequisite.

Industries and trades where CHAS is heavily demanded include:

• Commercial Construction & Groundworks: Main contractors operating under the Construction (Design and Management) Regulations 2015 (CDM 2015) mandate that all sub-contractors hold verified SSIP accreditation before setting foot on site.
• Facilities Management & Commercial Cleaning: Providers of commercial office cleaning, high-level window cleaning, and grounds maintenance must demonstrate safe systems of work, COSHH assessments, and adequate insurance coverage.
• Mechanical, Electrical & Building Services: Electricians, HVAC installers, gas engineers, and plumbers who work in occupied commercial environments or on new build developments.
• Private Security & Manned Guarding: Security companies providing static guards, door supervisors, keyholding, and alarm response to corporate, industrial, and construction premises are increasingly asked for SSIP health and safety accreditation in addition to sector licensing.
• Specialist Contractors: Scaffolding erectors, roofing specialists, demolition teams, and fit-out contractors whose operational environments carry high inherent risk.

Public sector procurement teams—including local councils, NHS hospital trusts, educational institutions, and emergency services—routinely mandate CHAS accreditation in their tender documentation. If your business cannot produce a valid accreditation certificate, your tender submission is frequently rejected at the pre-qualification gateway without your pricing or service delivery proposal even being evaluated.

Understanding CHAS Membership Levels

One of the most common points of confusion for contractors is understanding which level of CHAS membership to apply for. In recent years, CHAS has transitioned from offering a singular health and safety assessment to a tiered accreditation structure that matches the modern procurement requirements of major commercial and public sector buyers.

Membership Level	Core Assessment Scope	Primary Buyer Target
CHAS Standard	Core Health & Safety assessment aligned strictly with the SSIP Core Criteria and Stage 1 CDM 2015 requirements.	Subcontractors who simply need to satisfy basic SSIP requirements for clients and main contractors.
CHAS Advanced	SSIP Health & Safety PLUS PAS 91 pre-qualification modules, covering financial standing, environmental management, quality management, and equal opportunities.	Medium-to-large contractors bidding on regional tenders, public sector frameworks, and major commercial projects.
CHAS Elite	Comprehensive evaluation against the full Common Assessment Standard (CAS), covering all 13 compliance modules including Building Safety Act compliance, modern slavery, anti-bribery, and cyber security.	Tier-1 contractors, major building contractors, and businesses tendering for large-scale national infrastructure projects.

For the vast majority of small and medium-sized contractors looking to get onto approved supplier lists or satisfy site managers, CHAS Standard provides the necessary SSIP badge. However, if your clients specify PAS 91 or the Common Assessment Standard, upgrading to Advanced or Elite ensures you meet their exact supply chain pre-qualification criteria.

Core Requirements and Mandatory Documentation

Achieving CHAS accreditation is not merely a matter of checking boxes on an online portal. It is an evidentiary audit conducted by qualified health and safety assessors. You must provide clear, contemporaneous documentary evidence demonstrating that your business actively manages health and safety in accordance with UK statutory legislation.

1. Health and Safety Policy

Under Section 2(3) of the Health and Safety at Work etc. Act 1974, any business employing five or more people must have a written health and safety policy. For CHAS assessment, this policy must be divided into three distinct sections:

• Statement of General Policy: A signed and dated commitment by the senior director or owner outlining the organisation’s safety objectives. The policy must have been signed or reviewed within the preceding 12 months.
• Organisation & Responsibilities: A clear breakdown of duties detailing who within the business is accountable for specific health and safety functions (e.g., managing risk assessments, training, equipment maintenance, and emergency response).
• Specific Operational Arrangements: Detailed procedures describing how safety is executed practically across areas such as manual handling, working at height, fire safety, first aid, accident reporting, and hazardous substance management.

2. Risk Assessments and Method Statements (RAMS)

Assessors scrutinise your Risk Assessments and Method Statements with particular care. Submitting generic, templated risk assessments downloaded from the internet is the single most frequent reason applications fail. Assessors look for:

• Project-specific or task-specific assessments that reflect the actual hazards encountered in your day-to-day operations.
• Clear hazard identification, identification of who might be harmed, and realistic evaluation of risk severity and probability.
• Hierarchical control measures (elimination, substitution, engineering controls, administrative procedures, and PPE as a last resort).
• Documented method statements (Safe Systems of Work) describing step-by-step how high-risk activities are safely executed.
• Evidence that these assessments have been communicated to site workers, including signed operative acknowledgment sheets.

3. Insurance Coverage

You must provide current, valid certificates of insurance demonstrating appropriate cover for your operational activities. Mandatory insurance includes:

• Employers Liability Insurance: A minimum statutory cover of £5,000,000 (though most commercial clients and CHAS require £10,000,000) for all businesses employing staff, labour-only subcontractors, or volunteers.
• Public Liability Insurance: Typically a minimum cover of £5,000,000 (or £10,000,000 for high-risk sectors such as demolition, rail, or airside works).
• Professional Indemnity Insurance: Required if your business provides design, consultancy, or architectural specification services.

4. Access to Competent Health and Safety Advice

Under Regulation 7 of the Management of Health and Safety at Work Regulations 1999 (MHSWR), every employer must appoint one or more competent persons to assist them in undertaking the measures necessary to comply with safety legislation. CHAS requires verified evidence of this competence, which may include:

• Internal Competence: Certificates proving an internal director or safety manager holds formal qualifications (such as a NEBOSH General Certificate, NEBOSH National Diploma, or NVQ Level 5/6 in Occupational Health and Safety).
• External Safety Advisor: A formal agreement, appointment letter, or retainer contract with an external safety consultant, accompanied by their professional CV and proof of credentials (e.g., CMIOSH, TechIOSH, or OSHCR registration).

5. Training Records and Operative Competence

Assessors require proof that your workforce is properly trained and qualified to perform their duties safely. You must submit a comprehensive staff training matrix alongside individual qualification certificates. Required evidence typically covers:

• Mandatory general safety qualifications, such as CSCS (Construction Skills Certification Scheme) cards or industry equivalents.
• Trade-specific certifications (e.g., Gas Safe, NICEIC, ECS, CPCS for plant operators, IPAF for powered access, PASMA for mobile towers).
• Statutory awareness training, including Asbestos Awareness (UKATA or IATP accredited), Manual Handling, Working at Height, and First Aid at Work.
• Records of ongoing toolbox talks delivered on site, with date stamps and operative signatures.

6. Subcontractor Management Procedures

If your business utilizes subcontractors or labour-only personnel, CHAS requires documented procedures demonstrating how you vet and control their safety standards. You must provide sample subcontractor evaluation questionnaires, checks on their insurance and safety competence, and records of on-site induction briefings.

The CHAS Application Process Step-by-Step

Navigating the CHAS assessment process requires organisation, attention to detail, and methodical evidence collection. The application workflow follows five core stages:

Stage 1: Registration and Level Selection

You register your company details on the Veriforce CHAS digital portal and select the appropriate membership tier (Standard, Advanced, or Elite) based on your commercial requirements and client specifications.

Stage 2: Questionnaire Completion and Document Upload

You complete the comprehensive assessment questionnaire, which is segmented into distinct compliance modules. For each question, you must upload supporting documentary evidence. It is vital to ensure that files are clearly named, up-to-date, and legible to prevent assessor confusion.

Stage 3: Desktop Assessor Evaluation

Once submitted and assessment fees are paid, a dedicated CHAS health and safety assessor reviews your documentation. The assessor checks each submission against the SSIP Core Criteria and statutory regulations. Standard assessment turnaround typically ranges between 10 to 15 working days, although fast-track assessment options are available for contractors facing urgent tender deadlines.

Stage 4: Queries and Rectification (Audit Clarifications)

In many first-time submissions, assessors identify documentation deficiencies or require further clarification. If non-conformances are raised, the assessor issues an itemized query report outlining what is missing. You are provided with a timeframe (usually 30 days) to upload revised evidence. Promptly addressing these queries with compliant documentation is crucial to avoid assessment cancellation.

Stage 5: Approval, Certificate Issuance and SSIP Listing

Upon satisfactory verification of all evidence, CHAS formally awards your accreditation. You receive an official certificate of accreditation, permission to display the CHAS accredited logo on your vehicles, marketing materials, and website, and your company profile is automatically populated on the public SSIP Portal and CHAS Client Portal for procurement buyers to verify.

CHAS Accreditation Costs and Pricing Breakdown

Understanding how much CHAS accreditation costs requires distinguishing between the assessment fees charged directly by CHAS and the professional consultancy costs associated with preparing your documentation.

CHAS calculates its annual assessment fees using a tiered scale based on your total employee headcount (including directors, administrative staff, and site operatives):

• Micro Businesses (1 to 4 employees): Lower baseline fee structure designed to make accreditation accessible to sole traders and small trades.
• Small Businesses (5 to 15 employees): Moderate fee tier reflecting additional policy and record-keeping scrutiny.
• Medium Enterprises (16 to 49 employees): Mid-tier pricing with comprehensive assessment requirements.
• Large Enterprises (50+ employees): Higher fee scale reflecting complex multi-site operational management.

Additionally, fees vary depending on the chosen tier (Standard vs Advanced vs Elite). Annual renewal fees are payable each year to maintain your active accreditation and listing on the SSIP register. When budgeting for accreditation, contractors should also account for the potential internal cost of staff time spent creating documents from scratch, or engage our specialized CHAS services to expedite the process cost-effectively.

Head-to-Head: CHAS vs SafeContractor vs SMAS Worksafe

Contractors frequently ask whether they need CHAS if they already hold another SSIP accreditation, or which scheme they should choose first. While all three are esteemed SSIP member schemes, notable differences exist in buyer preferences and sector focus:

Feature	CHAS	SafeContractor	SMAS Worksafe
Primary Industry Focus	Construction, public sector tenders, civil engineering, local councils.	Commercial facilities management, retail maintenance, logistics, leisure.	Residential housebuilders (Persimmon, Barratt, Taylor Wimpey, Berkeley).
SSIP Recognition	Yes (Founding Member)	Yes (Founding Member)	Yes (Full Member)
Common Assessment Standard (CAS)	Yes (via CHAS Elite)	No (focuses on H&S / SafePQQ)	No (focuses on Worksafe / Worksafe Plus)
Mutual Recognition (“Deem to Satisfy”)	Yes — Accepts other SSIP certificates at discounted verification rates.	Yes — Recognizes existing SSIP certificates for simplified onboarding.	Yes — Streamlined “Deemed to Satisfy” route for existing certificate holders.

Under the SSIP mutual recognition agreement, if you hold an active CHAS certificate, any client who requires SafeContractor or SMAS can accept your CHAS certificate through the “Deem to Satisfy” protocol. However, certain major clients still request direct portal membership on their chosen platform for supply chain tracking purposes.

Top Reasons CHAS Applications Are Rejected

Achieving a first-time pass requires steering clear of standard application errors that trigger assessor queries and delays. The most frequent reasons applications get rejected include:

1. Unsigned or Outdated Policies: Submitting a health and safety policy that has not been signed within the last 12 months, or where the named responsible director no longer works at the company.
2. Generic, Off-the-Shelf RAMS: Providing generic risk assessments that refer to equipment or tasks your business does not actually perform, or lacking site-specific hazards.
3. Unverified Competent Advice: Failure to provide evidence that your appointed safety advisor holds verified qualifications or a current advisory contract.
4. Inadequate Subcontractor Vetting: Failing to demonstrate a structured mechanism for reviewing the insurance and competence of sub-tier contractors.
5. Lapsed Training Credentials: Submitting training certificates that have expired (e.g., certificates past their actual validity date or competence evidence that does not match the work).
6. Missing Accident and Incident Logs: Neglecting to submit evidence of accident recording books (or a formal written statement confirming zero reportable incidents under RIDDOR in the preceding 12 months).

The Strategic Business Benefits of CHAS Accreditation

While many contractors treat CHAS as an unavoidable administrative chore demanded by a client, forward-thinking businesses recognize that accreditation serves as a powerful growth catalyst:

• Unlocks Tier-1 Supply Chains: Without SSIP accreditation, major contractors like Kier, Balfour Beatty, Morgan Sindall, and Mace simply cannot subcontract to you under their supply chain governance rules.
• Pre-Qualifies for Public Sector Tenders: Saves dozens of hours on public tender submissions by bypassing Stage 1 health and safety pre-qualification checks.
• Mitigates Legal & Directors’ Liability: Establishing documented safety systems shields company directors from personal prosecution under Section 37 of the Health and Safety at Work etc. Act 1974 in the event of an on-site incident.
• Lowers Commercial Insurance Premiums: Commercial underwriters look favourably upon accredited contractors who maintain audited risk assessments, often leading to negotiated reductions on Employers and Public Liability premiums.

When Should You Engage a CHAS Compliance Consultant?

While some businesses possess the dedicated internal safety personnel required to navigate CHAS accreditation independently, engaging an experienced consultancy like ESC Support is often the most time-efficient and cost-effective route. You should strongly consider professional support if:

• You are applying for the first time: You need your core health and safety management systems, policies, and RAMS drafted correctly from scratch to guarantee compliance with current legislation.
• You have received an assessor rejection notice: Your application has stalled with multiple technical queries that your team is unsure how to resolve.
• You face a strict tender deadline: You need accreditation secured urgently to qualify for a lucrative contract or framework agreement.
• You lack a qualified internal Competent Person: You need formal access to competent health and safety advice to satisfy Regulation 7 statutory requirements. Our dedicated H&S services provide qualified advisory retainers that fulfill this requirement completely.

Frequently Asked Questions

How long is CHAS accreditation valid for?

CHAS accreditation is valid for exactly 12 months from the date of certificate issuance. You must undergo an annual renewal audit to demonstrate continued compliance and retain your approved status on the SSIP register.

Can a sole trader with no employees get CHAS?

Yes. Sole traders and partnerships with fewer than five employees can achieve CHAS accreditation. While you are exempt from the statutory requirement to hold a written health and safety policy, you must still provide evidence of competence, task-specific risk assessments, valid public liability insurance, and equipment maintenance records.

What happens if my CHAS application fails?

CHAS assessments do not outright “fail” immediately. If your documents do not meet the criteria, the assessor will place your application on hold and issue an action plan highlighting the areas requiring improvement. You are given a designated window to rectify the issues. If you do not resolve the queries within the timeframe, you may have to re-apply and pay assessment fees again.

Does CHAS include environmental and quality management?

The baseline CHAS Standard assessment focuses exclusively on occupational health and safety. However, if you opt for CHAS Advanced (PAS 91) or CHAS Elite (Common Assessment Standard), environmental management, quality management, modern slavery, and financial robustness are fully assessed.

Can I fast-track my CHAS assessment?

Yes. Veriforce CHAS offers an expedited “Fast Track” assessment service for an additional fee. This prioritises your file in the assessor queue, delivering initial audit feedback within 2 to 3 working days rather than the standard 10 to 15 working days.

How does CHAS benefit my company when tendering?

When tendering for contracts that mandate SSIP compliance, submitting your CHAS registration number allows you to skip lengthy pre-qualification safety sections entirely. Procurement officers can instantly verify your credentials on the SSIP portal, giving your bid immediate credibility.

For workplace first aid, HSE guidance normally specifies three-year certificates and recommends annual refresher training. Asbestos awareness refreshers should suit the work and training needs; a complete awareness course does not automatically have to be repeated every year. Check the HSE first-aid guidance and HSE asbestos training guidance, plus the assessor’s evidence requirements.