May a dispute concerning a construction settlement agreement be referred to adjudication?
A settlement dispute is not automatically a dispute under the construction contract. The answer depends on whether the agreement varies the original contract, substitutes a separate compromise, or leaves the relevant claim governed by the original contract.
Classify the settlement and identify the contractual source of the disputed right before referring it
If a standalone compromise replaces the disputed construction obligations, a later disagreement about that compromise may fall outside statutory adjudication because the compromise is not itself a construction contract. If the agreement operates as a variation of the original construction contract, the dispute may remain referable. Claims expressly or implicitly left outside the settlement can continue under the original contract. Analyse the settlement wording, consideration, release, payment mechanism, remaining performance and dispute clause. Do not assume that describing the document as a settlement or variation decides its legal effect.
| Issue | Position |
|---|---|
| Standalone substituted compromise | May fall outside statutory adjudication |
| Variation of construction contract | May remain within adjudication |
| Claim excluded from release | May remain under original contract |
| Ambiguous scope | Construe release and preserved rights |
| Adjudication clause | Check whether it extends to settlement disputes |
Identify the source of the right
Ask whether the payment, release or performance obligation now relied upon arises under the original construction contract or only under the later settlement. Jurisdiction follows the legal source, not the document title.
Lathom Construction
Enforcement was refused where the adjudicator decided a dispute under a written compromise treated as a separate agreement rather than the construction contract.
Shepherd Construction
A dispute about a settlement allegedly reached under duress was not treated as arising under the original construction contract.
L Brown and Sons
A settlement operating as a variation of the construction contract may leave disputes under the varied contract referable to adjudication.
McConnell Dowell
The supplemental agreement varied the construction contract rather than standing alone as a separate settlement, so the dispute stayed within the contract's adjudication provisions and the decision was enforced.
Classification factors
| Factor | Question |
|---|---|
| Release language | Does it discharge, replace or merely adjust existing obligations? |
| Continuing performance | Does the original contract continue to govern work and payment? |
| Consideration | What new bargain supports the compromise? |
| Payment mechanism | Is payment due under the settlement alone or the contract as varied? |
| Dispute clause | Does it expressly govern the settlement and preserved claims? |
| Entire agreement | Does it replace prior rights or preserve defined matters? |
Accord, variation or administration
A binding accord may substitute new obligations; a variation changes the existing construction contract; an administrative agreement may only record valuation or procedure. Each classification produces different jurisdictional consequences.
Calling a document "full and final settlement" is important but not conclusive if operative provisions preserve performance or claims.
Claims outside the settlement
Prepare a schedule of every claim released, compromised, deferred, reserved or omitted. A dispute not caught by the release may still arise under the original contract and remain referable.
Duress and validity
A challenge to formation, authority, duress, misrepresentation or formality may itself concern the separate compromise. Identify whether the adjudicator has statutory or contractual jurisdiction to decide that threshold dispute.
Drafting controls
State whether the agreement varies or supersedes the construction contract, which provisions survive, where payment rights arise and how disputes under the settlement are resolved. Include a clear schedule of preserved and released claims.
Jurisdiction sequence
Identify the disputed obligation and relief.
Read the settlement and original contract together.
Classify the later agreement by legal effect.
Map released, varied and preserved claims.
Identify the contractual source of each right.
Check statutory and contractual adjudication wording.
Crystallise the correct dispute under the correct agreement.
Draft the notice without crossing the jurisdictional boundary.
Authorities
| Authority | Citation | What it decides |
|---|---|---|
| Lathom Construction Ltd v AB Air Conditioning Ltd | 2000 | A dispute under a separate compromise was outside statutory adjudication on the recorded facts. |
| Shepherd Construction Ltd v Mecright Ltd | [2000] BLR 489 | The settlement dispute was treated as distinct from the original construction contract. |
| L Brown and Sons Ltd v Crosby Homes (North West) Ltd | [2005] EWHC 3503 (TCC) | A compromise operating as a variation may remain within the construction contract. |
| McConnell Dowell Constructors (Aust) Pty Ltd v National Grid Gas plc | [2006] EWHC 2551 (TCC) | A supplemental agreement that varies the construction contract keeps the dispute referable to adjudication. |