Construction Adjudication NZ: Process, Costs, Timeframes

Construction adjudication is a statutory dispute process under Part 3 of the Construction Contracts Act 2002 that produces a binding, enforceable decision on a payment or variation dispute in roughly six to nine weeks — far faster than the Disputes Tribunal or court, and available regardless of contract value.

By Steve Parker · Trueworks · NZ construction compliance · 7 min

If you are owed money on a construction contract, or you have been served a payment claim you dispute, adjudication is almost always the fastest lawful route to a binding answer. It sits underneath the Disputes Tribunal and the courts in cost, and above informal negotiation in enforceability. This is what the process actually involves, the statutory timeframes that govern it, what it costs, and where an independent review of the underlying quote or variation fits before you file.

What adjudication is, and why it exists

Adjudication was built into the Construction Contracts Act 2002 (the CCA) to solve a specific problem: payment disputes were stalling contractors' working capital for months while claims wound through the courts. Part 3 of the Act gives either party to a construction contract the right to refer almost any dispute — not just payment claims — to an independent adjudicator, who issues a determination that is binding and enforceable as if it were a court judgment, unless and until it is overturned in arbitration or litigation.

Under section 25 of the CCA, a party has the right to refer a dispute arising under a construction contract to adjudication at any time, subject to limited exceptions such as a prior agreement to arbitrate that specific dispute. Section 26 confirms adjudication sits alongside other dispute resolution mechanisms — an adjudicator must stop if the same dispute is being decided elsewhere — and section 27 confirms that adjudicating does not stop either party later pursuing the matter through civil proceedings.

Adjudication vs Disputes Tribunal vs court

These three forums are not interchangeable, and picking the wrong one wastes time and money. For a side-by-side comparison of when each forum suits a given dispute, see our companion piece on Disputes Tribunal vs adjudication vs court in NZ. In short:

| Forum | Claim limit | Typical duration | Outcome | |---|---|---|---| | Disputes Tribunal | Up to $30,000 (or $50,000 by agreement) | Weeks to a few months | Binding, no lawyers at hearing | | CCA adjudication | No limit | Roughly 6–9 weeks | Binding and enforceable, interim pending final resolution | | District/High Court | No limit | Many months to years | Final judgment, full evidential process |

Adjudication's advantage is speed at any claim size, without needing to prove your case to the civil standard expected in court. Its outcome is provisional in that a dissatisfied party can still pursue arbitration or litigation — but in practice, most determinations are paid and stand unchallenged, because reopening the dispute is expensive and the adjudicator has already tested the evidence.

The process step by step

Adjudication is initiated, not filed. Under section 28, the claimant starts the process by serving a written notice of adjudication on the other party, setting out the dispute, the remedy sought, and the details the Act's prescribed form requires.

The statutory sequence that follows runs on working days, not calendar days:

• Adjudicator selection (s33). The claimant requests an adjudicator as soon as practicable — the parties can agree on one, or an authorised nominating body (the Building Disputes Tribunal or Fair Way Resolution, for example) appoints one where they cannot.

• The claim (s36). Once the adjudicator accepts appointment, the claimant serves a full written claim: the facts, contract terms, and evidence relied on — payment claims, correspondence, variation records, and any expert material.

• The response (s37). The respondent must serve a written response within 5 working days of receiving the claim (or the adjudicator's notice of acceptance, whichever is later), unless the adjudicator allows more time for size or complexity.

• Reply and rejoinder. Many adjudicators allow a short further reply from the claimant and a rejoinder from the respondent, though these steps are procedural rather than fixed by the Act.

• The determination (s46). The adjudicator must issue a written determination within 20 working days after the response is due, extendable to 30, or longer by agreement. It states the amount payable, by whom, and by when — and a late response cannot be taken into account.

Because most steps run on short, non-negotiable working-day clocks, the party with organised records before adjudication starts has a structural advantage. Reconstructing a variation trail in five working days is a common and avoidable failure.

What it costs

Adjudicator fees are charged to the parties (usually jointly and severally, then allocated in the determination), and the cost scales with claim size. Under the Building Disputes Tribunal's published fee scheme, low-value claims under $250,000 with limited issues can qualify for a fixed-fee track, running from roughly $1,500 plus GST for claims under $5,000 up to around $19,750 plus GST near the $250,000 threshold. Above that, or for more complex claims, adjudicators charge on time, and nominating bodies require an upfront security deposit — commonly from around $6,000 plus GST for smaller general claims up to $20,000 plus GST or more for claims over $1 million. Each party typically also bears its own costs for preparing submissions and any legal or expert help.

Set against months of a stalled payment or a full court proceeding, adjudication is comparatively inexpensive — but it carries real cost, and a claim built on thin or disorganised evidence can burn that outlay without a favourable result.

What evidence actually wins

Adjudicators decide on the papers and the record, not on persuasion at a hearing. Claims that succeed have a clean, contemporaneous trail:

• The underlying contract and its variation or payment claim provisions, cited precisely.

• Payment claims and payment schedules served in the form and within the timeframes the CCA requires — a defective payment claim can undermine an otherwise strong case.

• A dated, complete variation paper trail: instruction, pricing, approval (or the absence of it, if that is the dispute), and correspondence showing what each party knew and when.

• Site records, progress photos, and any quantity surveyor or engineer assessment tying the disputed sum to work actually done.

The most common weakness in adjudication claims is a variation history that was never properly priced or documented at the time — leaving the claimant reconstructing figures under statutory time pressure instead of producing them.

Where an independent review fits — before you escalate

Adjudication rewards parties who arrive with their numbers and paper trail already tested. Before serving a notice of adjudication — or before responding to one — it is worth having the disputed quote, variation, or payment claim independently checked against the contract and the work actually completed. An independent variation review identifies whether a disputed sum is properly substantiated, flags gaps in the evidence a respondent could exploit, and gives either side a defensible, documented position before the statutory clocks start running. Retentions disputes are a related and increasingly common trigger for adjudication; if withheld retention money is part of what's in dispute, see our companion piece on retentions held on trust under the Construction Contracts Act.

If you are weighing up whether to file a notice of adjudication, respond to one, or want a second opinion on the quote or variation behind the dispute, get in touch before the five-working-day clock starts. If the dispute in front of you is specifically about a single disputed variation rather than the general process, our companion piece on adjudicating a disputed variation in NZ covers the document set and preparation steps for that narrower case.

What this doesn't tell you

Timeframes and fee ranges above are drawn from the Construction Contracts Act 2002 and the Building Disputes Tribunal's published fee schedule at time of writing; nominating bodies differ slightly in fee structure and practice, and the Act has been amended since 2002 (most recently on retention money, under the Construction Contracts (Retention Money) Amendment Act 2023) — check the current Act and the relevant nominating body's schedule before relying on a figure for a live dispute. This article is general information, not legal advice; a dispute of significant value, or with a complex factual history, generally warrants a lawyer alongside any independent variation review.

Got a quote, tender or variation on your desk? Get it checked — written, code-cited, back within 24 hours. First check free. Send us the drawings and the quote, tender or variation. You get a written, code-cited check back within 24 hours. No charge for your first check. No card, no obligation. NDA available. → Get the free check at trueworks.co.nz/contact — or email hello@trueworks.co.nz