What Is CHAS Accreditation? Who Asks for It and What It Unlocks

CHAS is a UK contractor accreditation scheme: you submit your health and safety documentation once a year, an assessor checks it against a published standard, and buyers who recognise CHAS accept the certificate instead of reading your paperwork themselves. It is a founder member of SSIP. Of the 557 UK work-winning gates we track, 58 name it.

That last number is the point of this post. Almost everything written about CHAS accreditation is written by someone who sells help getting it, so the question they answer is "how do I pass" rather than "should I buy this at all". I run a subcontracting model - win the work, sub the delivery, keep the spread - and I maintain a verified directory of where UK construction work is actually bought. So I can answer the second question with a count instead of an opinion.

What CHAS actually is#

Strip the marketing away and CHAS is a filing cabinet with an assessor in front of it.

A buyer who hires contractors has a legal duty to check that the people they hire are competent. Doing that properly means reading risk assessments, method statements, insurance certificates, training records and accident history for every contractor on the list, every year. No housing association with 400 suppliers is doing that from scratch. So they outsource it: they name a scheme, the scheme assesses the contractor, and the buyer accepts the certificate.

CHAS sells three tiers of that assessment:

• CHAS Standard - from £429 a year. The health and safety assessment that meets the SSIP requirement, plus a social value assessment.
• CHAS Advanced - from £659 a year. Adds the wider checks that used to sit under PAS 91.
• CHAS Elite - from £949 a year. Adds public sector requirements and the Common Assessment Standard.

Those are CHAS's own published from-prices, checked on chas.co.uk on 15 September 2026. Two things to be careful about. First, they are entry prices: CHAS says membership cost scales with the size of your organisation, so the number you are quoted at signup depends on your headcount and will usually be higher than the headline. Second, third-party guides quoting these tiers are not all current - I found the Elite figure widely republished at an older, lower price while CHAS's own page said £949. Check the scheme's own site on the day you buy, not a blog that ranks well.

What CHAS is not: it is not a licence, it is not a qualification, and it does not put work in front of you. It removes a reason for a buyer to say no. That is genuinely worth money when a buyer has already asked for it, and worth nothing when they have not.

Who actually asks for it#

Here is the data nobody else publishing on this keyword has. We maintain a directory of 557 verified UK work-winning gates - the registration routes, portals, supply chains, frameworks and networks through which construction work is actually bought - and each one carries a researched record of what it demands at signup. Counting every gate that names CHAS in its accreditation, document or trade-certification requirements:

58 of the 557 gates name CHAS, as of September 2026.

Where those 58 sit matters more than the number:

Buyer type	Gates naming CHAS
Housing associations, large landlords and ALMOs	12
Frameworks (housing and beyond)	10
Insurance repair networks and FM groups	6 of 23
Managing agents, block management, student accommodation	4 of 15
Tier 1 contractor supply chains	3 of 17
Housebuilders and developers	3 of 13
Retrofit, ECO funding chain and DLO subcontracting	8
Everything else (utilities, rail, marketplaces, councils)	12

Read that table as a map of where the badge pays. CHAS demand concentrates in the repairs and maintenance economy: social landlords, the agents who manage blocks, the insurers and FM firms who place reactive work, and the frameworks that sit above them. It is thin in utilities and rail, which run their own schemes, and almost absent from trade marketplaces and consumer platforms, which care about reviews and identity checks instead.

One more number that changes the decision: 34 of those 58 gates have an open, free signup. The registration is not what is stopping you. The badge is.

If your target buyers are councils and housing associations, the work-winning motion around this is the same one I describe in how to get onto a council approved contractor list and the master portal registrations - accreditation is one field on a form that most contractors never fill in at all.

The bigger pool: what CHAS shares with every other SSIP scheme#

SSIP - Safety Schemes in Procurement - is not something you join. It is the umbrella body, and CHAS is one of its member schemes.

This is the part that decides whether you should buy CHAS specifically. In the directory, 111 of the 557 gates ask for "an SSIP scheme" without naming one, against 58 that name CHAS. When the form says SSIP, any member scheme's current certificate satisfies it.

SSIP also runs mutual recognition, which it calls Deem to Satisfy: if you already hold a current certificate from one member scheme, you can take it to another and get theirs without repeating the full health and safety assessment, usually at a reduced fee. The limit is important and routinely oversold - Deem to Satisfy covers the health and safety section only. The finance, insurance, environmental, quality and social value modules that the higher tiers sell are assessed by each scheme separately and are not mutually recognised.

So the practical order of operations is: find out what your buyer's form actually says, then buy the cheapest thing that satisfies that sentence.

When you do not need CHAS#

I would rather you kept the £429 than bought a badge you cannot use. Skip it, for now, if any of these are true:

• Your buyers say "SSIP", not "CHAS". Any member scheme clears that sentence. This covers roughly twice as many gates as the CHAS-by-name group.
• You already hold a current SSIP certificate. Check Deem to Satisfy before paying for a second full assessment.
• Your work comes from marketplaces, homeowners or word of mouth. Almost none of the consumer platforms in the directory ask for it. They ask for reviews, ID and public liability cover.
• You are in utilities, rail or defence. Those sectors run their own schemes and a general accreditation will not substitute.
• You have no named buyer yet. The badge does not create demand. Buying accreditation before you have a buyer who asked for it is the accreditation equivalent of printing business cards for a business you have not started - and I have watched contractors do exactly that, twice in the same year, with two different schemes.

The one case where buying ahead of demand is defensible: you have picked a lane - social housing repairs, insurance work, block management - looked at the specific buyers in it, and found that most of them name CHAS. Then you are not speculating. You are clearing a known gate.

An accreditation does not win work. It stops a buyer who already wants you from having a reason to say no.

What it costs to actually hold it#

The subscription is the visible cost and usually the smaller one. The real stack is:

• the tier fee, banded by headcount, annually - not a one-off
• the documentation work: policies, risk assessments, method statements, training records, accident history, insurance certificates, all current on assessment day
• the renewal, every year, with the same evidence refreshed

If your paperwork is already in order because you run real jobs and keep real records, the assessment is an afternoon and the fee is the cost. If it is not, the fee is the smallest part of what you are about to spend, and the honest move is to fix the underlying records first - they are what the badge is certifying.

This is where most people get the sequencing wrong. They treat accreditation as a marketing purchase. It is an operations purchase that happens to unlock a marketing channel: it works when the paperwork behind it is genuinely true, and it collapses at the first site audit when it is not.

Where this sits in the bigger picture#

CHAS is one gate among many, and the model only works if you know which gates your buyers actually stand behind. That is the whole argument in what construction arbitrage is and the reason I keep the directory: work-finding is a directory problem, not a marketing problem. The full map, and how the 557 break down by buyer type, is in where to find construction contracts in the UK.

If the lane you are eyeing is insurance repair work, read inside the insurance repair machine before you buy anything - the accreditation those networks ask for is only the first of several doors, and the payment terms matter more than the badge.

A note on where the numbers come from: the counts in this post are computed from our own requirements dataset covering all 557 UK gates, not scraped from scheme marketing. They move as buyers change their forms, so they are stated with a date and recomputed when we refresh. If a buyer you care about has changed what it asks for, the buyer's own form wins over my count.

Last checked: 15 September 2026.