CHAS vs Constructionline vs SafeContractor: Which Do You Need?
Three schemes dominate UK construction prequalification: CHAS, Constructionline, and SafeContractor. All three are SSIP members, all three assess health and safety competence, and all three are widely recognised across the industry. So which one should your business pursue — and do you need more than one?
This comparison breaks down what each scheme covers, where it is strongest, what it costs, and which makes sense for different types of construction SME.
The Three Schemes at a Glance
| CHAS | Constructionline | SafeContractor | |
|---|---|---|---|
| Established | 1997 | 1998 | 2002 |
| Primary focus | Health & safety assessment | Multi-criteria prequalification register | Health & safety assessment |
| SSIP member | Yes | Yes | Yes |
| Tiers | Standard, Premium Plus | Silver, Gold, Platinum | Standard, extended options |
| Assessment scope | H&S (Standard); H&S + environmental, quality, financial, equality, modern slavery (Premium Plus) | Company verification, financial standing, H&S, environmental, quality, equality, CSR (varies by tier) | H&S (Standard); extended to environmental, quality (optional) |
| Pricing | Check current fees | Check current fees | Check current fees |
| Renewal | Annual | Annual | Annual |
| Typical assessment time | 1–4 weeks | Varies by tier | 1–3 weeks |
Pricing is subject to change and varies by company size and tier. Last reviewed: February 2026. Always check current fees directly with each scheme.
CHAS: What It Covers and Who Recognises It
CHAS began as a local authority initiative to standardise health and safety vetting of contractors. Its roots in public-sector procurement remain strong — if you work for councils, housing associations, or public-sector facilities teams, CHAS is very likely to be requested. For a step-by-step walkthrough of the application process, see our guide to getting CHAS accreditation.
CHAS Standard focuses squarely on health and safety: policy, risk assessments, safe systems of work, training, incident reporting, insurance, and subcontractor management. It is a focused, health-and-safety-specific assessment that satisfies the core SSIP requirements.
CHAS Premium Plus extends the assessment into environmental management, quality management, financial standing, anti-bribery and corruption, modern slavery, and equal opportunities. This broader scope brings it closer to what Constructionline Gold covers, and is increasingly requested by clients who want a single assessment covering multiple compliance areas.
Strongest in: Local authority work, housing associations, public-sector maintenance, and smaller principal contractor supply chains. CHAS is often the first accreditation that SME subcontractors are asked to hold.
Constructionline: What It Covers and Who Recognises It
Constructionline operates differently from CHAS and SafeContractor. Rather than being purely an assessment scheme, it functions as a national register of prequalified contractors and consultants. Buyers — particularly in the public sector and Tier 1 contractor supply chains — use Constructionline as a database to find and verify prequalified suppliers.
Silver covers basic company verification, financial assessment (using Dun & Bradstreet data), insurance verification, and health and safety assessment aligned to the SSIP Common Assessment Standard.
Gold adds environmental management, quality management, equal opportunities, and anti-bribery assessment. Gold is the level most commonly required by Tier 1 contractors and larger public-sector frameworks.
Platinum extends into corporate social responsibility and behavioural assessment — less commonly required for SMEs but relevant for major frameworks.
Strongest in: Tier 1 contractor supply chains, central government procurement, NHS and education-sector work. If a Tier 1 contractor tells you to "get on Constructionline," they typically mean Silver as a minimum, often Gold.
SafeContractor: What It Covers and Who Recognises It
SafeContractor is a health and safety prequalification scheme with strong penetration in facilities management, commercial maintenance, and the broader services sector. It has significant reach in construction, particularly in fit-out, refurbishment, and maintenance work.
The core assessment covers health and safety competence, risk assessments, method statements, training records, and insurance — very similar in scope to CHAS Standard. Extended options allow you to add environmental management and quality management modules.
Strongest in: Facilities management, commercial property maintenance, retail fit-out, and corporate services. SafeContractor is often the specified requirement for work in occupied commercial buildings, shopping centres, offices, and similar environments.
SSIP Mutual Recognition: Does One Cover All Three?
All three schemes are SSIP members, which means they assess against the Common Assessment Standard (CAS) for health and safety. In theory, achieving one SSIP assessment means the others should recognise it through mutual recognition (the "deem to satisfy" mechanism).
In practice, mutual recognition works for the core health and safety component. However:
- Constructionline is a register, not just an assessment. Buyers searching Constructionline for suppliers will not find you unless you are registered with Constructionline specifically — having CHAS or SafeContractor does not add you to the Constructionline database.
- Extended modules (environmental, quality, financial) are scheme-specific and fall outside SSIP mutual recognition. Having CHAS Premium Plus does not automatically satisfy Constructionline Gold requirements.
- Client specifications often name a specific scheme. If a tender document says "Constructionline Gold required," holding CHAS Premium Plus may not be accepted — even if the assessment scope is comparable.
The bottom line: SSIP mutual recognition reduces duplication for the health and safety element, but it does not make the schemes fully interchangeable in practice.
See also: What Is SSIP and Which Scheme Should You Choose? for a full breakdown of all SSIP member schemes and how mutual recognition works.
Detailed Comparison: Assessment Areas
| Assessment area | CHAS Standard | CHAS Premium Plus | Constructionline Silver | Constructionline Gold | SafeContractor |
|---|---|---|---|---|---|
| Health & safety policy | Yes | Yes | Yes | Yes | Yes |
| Risk assessments | Yes | Yes | Yes | Yes | Yes |
| Method statements / RAMS | Yes | Yes | Yes | Yes | Yes |
| Insurance verification | Yes | Yes | Yes | Yes | Yes |
| Training records | Yes | Yes | Yes | Yes | Yes |
| Financial standing | No | Yes | Yes (D&B) | Yes (D&B) | No |
| Environmental management | No | Yes | No | Yes | Extended option |
| Quality management | No | Yes | No | Yes | Extended option |
| Equal opportunities | No | Yes | No | Yes | No |
| Modern slavery | No | Yes | No | Yes | No |
| Anti-bribery | No | Yes | No | Yes | No |
Which Should You Get First?
The right choice depends on where your work comes from and where you want it to come from. Here are the most common scenarios:
Scenario 1: You primarily work for local authorities and housing associations
Recommendation: Start with CHAS Standard.
CHAS has the deepest roots in local authority procurement. It is widely specified in council tender documents and housing association prequalification requirements. CHAS Standard provides the core health and safety assessment at a relatively accessible price point. If your clients begin asking for broader compliance coverage, you can upgrade to Premium Plus later.
Scenario 2: You are targeting Tier 1 contractor supply chains
Recommendation: Start with Constructionline Gold.
Most major Tier 1 contractors — Balfour Beatty, Kier, Morgan Sindall, Willmott Dixon, and others — use Constructionline as their primary or secondary supply chain register. Being on the register at Gold level is often a hard requirement for inclusion in their supply chain. Without it, your business may simply not appear in their procurement searches.
Scenario 3: You work in facilities management, maintenance, or commercial fit-out
Recommendation: Start with SafeContractor.
SafeContractor has the strongest recognition in FM and commercial maintenance environments. If your clients are property managers, retail chains, or corporate occupiers, SafeContractor is likely to be the scheme they specify.
Scenario 4: You work across multiple sectors
Recommendation: Start with whichever scheme your largest or most frequent clients require, then add a second based on your growth pipeline. Many established SMEs hold two or all three.
Scenario 5: You are just starting out
Recommendation: Start with CHAS Standard. It is widely recognised, relatively accessible on cost, and through SSIP mutual recognition gives you visibility across the broader scheme network.
Do You Need All Three?
Not necessarily. The decision should be driven by client requirements, not by a desire to collect certificates. Check your current and target clients' tender documents and supply chain portals, and ensure the annual fees are justified by the work each scheme opens up.
Regardless of which scheme you choose, the underlying documentation requirements are substantially the same. Use our Construction Accreditation Readiness Scorer to benchmark your position and identify gaps before you apply.
Summary
CHAS, Constructionline, and SafeContractor each serve the same fundamental purpose — prequalifying contractors — but they serve different parts of the market and assess at different levels of depth. Choose based on where your work comes from, not on which scheme seems easiest. Prepare your documentation thoroughly before applying (our pillar guide to prequalification covers the full documentation requirements), and treat the assessment process as an opportunity to strengthen your management systems, not just a box-ticking exercise.
Sources and References
- SSIP (Safety Schemes in Procurement) — ssip.org.uk
- Common Assessment Standard (CAS) — maintained by the SSIP Forum
- Health and Safety at Work etc. Act 1974 — legislation.gov.uk
Disclaimer: This comparison is based on publicly available information and common industry practice. TenderReady is not affiliated with, endorsed by, or acting on behalf of CHAS, Constructionline, SafeContractor, SSIP, or any other named accreditation body or scheme. Assessment criteria, pricing, and processes are subject to change — always verify current details with the relevant scheme directly.