Dispute Resolution for Tradespeople: CTSI-Approved ADR Schemes, Construction Act Adjudication and Small Claims vs County Court

Summary

Unpaid invoices and disputed work are among the most stressful experiences in the trades. Most tradespeople try to avoid conflict, which means disputes often drag on for months without resolution — damaging cash flow and taking up time that should be spent on jobs. Knowing the correct process, and presenting it clearly to the customer at the right moment, significantly changes the dynamic.

The legal framework divides along a critical line: consumer contracts (where the customer is a private individual) and business-to-business contracts (commercial clients). Consumer contracts carry additional protections for the customer under the Consumer Rights Act 2015, but also give the tradesperson access to CTSI-approved ADR schemes and the ADR Regulations 2015. B2B disputes over construction contracts — typically contracts worth over £10,000 and in writing — can use statutory adjudication, which is a fast-track legal process unique to the construction industry.

Most disputes involving tradespeople are for sums under £10,000. These are handled in the Small Claims Track of the County Court in England and Wales (Sheriff Court in Scotland, Small Claims Court in Northern Ireland). The process is designed for non-lawyers and is relatively inexpensive, but it does require the tradesperson to understand the basics of civil procedure.

Key Facts

• ADR Regulations 2015 — UK statutory instrument implementing EU Directive 2013/11/EU; requires traders to inform consumers of an approved ADR scheme when a complaint cannot be resolved
• CTSI-approved schemes — Trading Standards approved ADR providers include Dispute Resolution Ombudsman (DRO), Ombudsman Services, and trade-specific schemes (NICEIC, Gas Safe, NHBC)
• 8-week rule — traders must notify the consumer of a CTSI-approved ADR scheme if the complaint remains unresolved after 8 weeks (but are not required to participate unless contractually committed)
• Small Claims Track limit — £10,000 in England and Wales (since April 2024); £5,000 in Scotland; £3,000 in Northern Ireland
• County Court issue fee — £35 for online claims under £300; scaled up to £410 for claims £5,000–£10,000; fees recoverable from losing party
• Construction Act 1996 (as amended by LDEDCA 2009) — gives parties to a qualifying construction contract the right to refer disputes to adjudication at any time
• Adjudication timeline — adjudicator must give decision within 28 days of referral (extendable by 14 days by consent, or longer by agreement)
• Adjudication threshold — applies to construction contracts over £1 (no minimum value); but practical minimum is around £10,000 given costs
• Pay Less Notice — under the Construction Act, a payer must serve a Pay Less Notice before the final date for payment if they intend to pay less than the notified sum; failure to serve means the full sum is due
• Paymaster default — if no Pay Less Notice is served and the invoice is not paid, the adjudicator can enforce payment without hearing the merits
• Limitation period — 6 years for contract claims (Limitation Act 1980), 12 years if contract is under deed/seal
• Pre-action protocol — Small Claims requires a Letter Before Claim (LBC) giving 14 days' notice before issuing proceedings
• Interest on late payment — Late Payment of Commercial Debts (Interest) Act 1998: 8% above Bank of England base rate; applies to B2B contracts automatically

Quick Reference Table

Detailed Guidance

Step 1 — Negotiation and Paper Trail

Before any formal process, every dispute must be approached with a documented negotiation attempt. This is not just good practice — courts and ADR schemes will examine whether the parties made reasonable efforts to resolve the matter before escalating.

Document every step:

• Keep all written communication (WhatsApp messages count as evidence)
• Follow verbal conversations with an email confirming what was discussed and agreed
• Send a formal complaint acknowledgement letter when the customer raises a complaint — this starts the 8-week ADR clock
• Offer a specific remedy: rework a specific item, reduce the invoice by a specific amount, or commission an independent assessment

CTSI-Approved ADR Schemes

Under the ADR Regulations 2015 (SI 2015/542), traders must tell consumers about an approved ADR scheme if a complaint remains unresolved after 8 weeks. This does not mean the trader must participate — only that they must provide the information.

However: if your trade association membership, TrustMark registration, or consumer code of conduct commits you to a specific scheme, participation may be mandatory. Check the small print of your scheme registration.

Key CTSI-approved schemes for tradespeople:

• Dispute Resolution Ombudsman (DRO) — general trades, home improvement
• NICEIC — electrical contractors; handles complaints against registered members
• Gas Safe Register — gas installers; consumer complaints process
• NHBC — new-build warranty complaints
• Ombudsman Services — broad coverage including some construction trades
• TrustMark — registered tradespeople; scheme rules include dispute resolution

ADR outcomes can include:

• Remedial work order
• Partial or full refund
• Financial compensation up to scheme limits
• Formal finding against the tradesperson (which can affect scheme membership)

Statutory Adjudication Under the Construction Act 1996

Adjudication is a fast-track dispute resolution mechanism that applies to "construction contracts" under the Housing Grants, Construction and Regeneration Act 1996. The 2009 amendments (via the Local Democracy, Economic Development and Construction Act — LDEDCA) significantly extended its reach.

Who can use adjudication:

• Any party to a qualifying construction contract
• The contract does not need to be in writing since the 2009 amendments
• Applies to residential property work where the contractor is not a residential occupier

Who cannot use it (as the referring party) under the 1996 Act:

• Residential occupiers (homeowners) cannot refer disputes under the Act — but contractors working for homeowners can
• Pure supply contracts (goods only, no installation)

The adjudication process:

Dispute crystallises
        |
        v
Issue Notice of Adjudication to other party
(describes dispute; nominates adjudicator or requests nomination)
        |
        v
Adjudicator Nominating Body (ANB) nominates if needed
(RICS, TeCSA, CIArb — typically within 5 days)
        |
        v
Referral Notice served (within 7 days of Notice)
(full claim with supporting documents)
        |
        v
Respondent's Response (usually 14 days)
        |
        v
Adjudicator's Decision (28 days from Referral, or extended)
        |
        v
Complied with voluntarily OR enforced via County Court
(courts enforce in >95% of cases without re-hearing merits)

Pay Less Notice rules (critical for tradespeople issuing invoices):

• Each payment application or invoice must be accompanied by or followed by a Payment Notice from the payer within the contractually agreed period (or 5 days under the Act's default)
• If the payer wants to pay less than the notified sum, they must serve a Pay Less Notice before the "final date for payment"
• If neither notice is served: the full sum is due on the final date for payment
• Failure to pay = "smash-and-grab" adjudication: adjudicator will order payment of the full notified sum without examining the merits

Small Claims Track — Step by Step

For disputes up to £10,000 (England and Wales), the Small Claims Track is the most practical route for tradespeople pursuing unpaid invoices from consumers.

Before issuing:

1. Send a Letter Before Claim (LBC) — minimum 14 days' notice; state the amount claimed, the basis, and that court action will follow
2. Keep a copy of the LBC with proof of delivery (recorded post or email with read receipt)
3. Continue to keep all evidence: contract, quotes, signed variation orders, photos of completed work, invoices, payment records, correspondence

Issuing a claim:

• Use Money Claim Online (MCOL) at mcol.justice.gov.uk — fastest route for straightforward debt claims
• Pay the issue fee (scaled by claim value)
• Claim is served on the defendant by the court; defendant has 14 days to respond

Potential outcomes:

• Default judgment (defendant doesn't respond) — usually awarded within 4–6 weeks
• Defended claim — directions hearing; hearing date set 3–6 months ahead
• Settlement — most defended Small Claims settle before the hearing

After judgment: Winning a judgment is not the same as receiving payment. Enforcement options include:

• Attachment of earnings (where defendant is employed)
• Third-party debt order (against defendant's bank account)
• High Court Enforcement Officer (HCEO) — transfer up from County Court for claims over £600

Late Payment — B2B Contracts

For commercial clients (limited companies, sole traders, other businesses), the Late Payment of Commercial Debts (Interest) Act 1998 applies automatically:

• Interest accrues at 8% above the Bank of England base rate from the day after the agreed payment date
• If no payment date was agreed, interest runs from 30 days after invoicing
• Compensation of £40–£100 per invoice is also due under the Act
• These rights cannot be contracted out of (except by agreed substantial remedy clauses)

Calculate and state the late payment interest in any LBC — it increases the commercial pressure on the debtor and is directly recoverable.

Frequently Asked Questions

Do I have to go to ADR before going to court?

No — there is no legal requirement to exhaust ADR before issuing court proceedings in the UK. However, courts expect parties to have attempted resolution in good faith. Under the Civil Procedure Rules Pre-Action Protocol, unreasonable refusal of ADR can result in cost penalties even for the winning party. In practice, if you have made reasonable attempts to resolve the dispute and the customer has refused, you are well-positioned for court.

Can I charge a customer interest on late payment if they are a consumer (not a business)?

The Late Payment of Commercial Debts Act only applies to B2B contracts. For consumer contracts, you can charge interest if it was expressly included in your contract terms — but the rate must be reasonable and prominently disclosed. A contractual interest clause at 2–4% above base rate is generally considered reasonable; excessive interest rates could be challenged as an unfair contract term under the Consumer Rights Act 2015.

What happens if I lose an adjudication?

Adjudication decisions are temporarily binding — you must comply immediately. However, either party can subsequently have the dispute re-opened in court or arbitration, where the full merits are examined. In practice, the majority of adjudication decisions are accepted as final because the cost and disruption of re-litigation outweighs the benefit. If you lose, pay — and then decide whether to pursue further via arbitration or litigation.

My customer threatens a credit card chargeback. What can I do?

A chargeback reverses a card payment and is handled by the card issuer. You will receive a notification from your payment provider and have a limited window (typically 7–14 days) to provide evidence that the work was completed as agreed. Submit your contract, photos, signed completion documentation, and any correspondence showing the customer approved the work. Strong evidence substantially increases the chance of the chargeback being declined. Always get sign-off on completed work in writing.

Is WhatsApp evidence admissible in a Small Claims case?

Yes. Digital communications including WhatsApp messages, texts, and emails are admissible evidence in UK civil proceedings. Print screenshots with timestamps visible. Courts regularly accept such evidence in Small Claims cases. Keep messages — do not delete them when a dispute arises.

Regulations & Standards

• Housing Grants, Construction and Regeneration Act 1996 (as amended by LDEDCA 2009) — statutory adjudication rights for construction contracts

• ADR Regulations 2015 (SI 2015/542) — requires traders to signpost CTSI-approved ADR schemes to consumers

• Consumer Rights Act 2015 — service quality standards for consumer contracts; right to repeat performance or price reduction

• Late Payment of Commercial Debts (Interest) Act 1998 — 8% + base rate interest on B2B late payments

• Limitation Act 1980 — 6-year limitation period for contract claims in England and Wales

• Civil Procedure Rules (CPR) — Pre-Action Protocols; Small Claims Track procedure

• Scheme for Construction Contracts (England and Wales) Regulations 1998 — default adjudication and payment provisions

• Money Claim Online (MCOL) — Online court claim portal for England and Wales

• CTSI ADR Approved Schemes List — Full list of certified ADR providers

• RICS Adjudication Panel — Adjudicator nomination service

• Citizens Advice — Problems with a tradesperson — Consumer rights guidance

• GOV.UK — Take court action to recover a debt — Official court process guidance

• writing a quote — Including payment terms and dispute clauses in quotes

• contract templates — Written contract basics for tradespeople

• getting paid — Invoicing, payment schedules and chasing unpaid invoices

• consumer rights act guide — What the Consumer Rights Act 2015 means for tradespeople