Recovering Costs From Construction Delays

Table of Contents

• What You Need Before You Claim a Single Dollar
• Payment Claims and Schedules: The Statutory Backbone for Recovering Costs From Construction Delays
• Security of Payment Act Adjudication: Fast Track or False Start?
• Calculating Prolongation Costs Without Guessing
• Liquidated Damages vs Actual Loss: Which Number Wins?
• Using a Construction Delay Claim Template to Prove Entitlement
  • Building the evidence bundle as you go
  • The cost-benefit check before you commit
  • Insurance and bond recovery
• Digital Evidence, Insurance and Bond Recovery: The Angles Most Claims Miss
• Frequently Asked Questions

Last Updated: September 30, 2026

What You Need Before You Claim a Single Dollar

Recovering costs from construction delays starts long before you file, with the documents, notices and programme you maintained while the project ran.

Most claims fail on paperwork, not merit. A contractor can lose a strong entitlement claim simply because a contractual notice went out three days late, or because the site diary stopped being updated during the very delay they’re now claiming for. According to the Australasian Legal Information Institute’s database of security of payment judgments, notice and record-keeping failures appear repeatedly in disputed claims.

Here’s what you need locked down before you claim:

• The contract, including every amendment, annexure and special condition
• A complete notice register showing what was sent, to whom, and when
• A live, as-built programme updated through the delay period
• Site diaries, daily reports and progress photos covering the affected works
• Cost records tying labour, plant and overheads to the delay window
• Correspondence with the head contractor, subcontractors and superintendents

Miss any of these and your claim weakens fast.

Payment Claims and Schedules: The Statutory Backbone for Recovering Costs From Construction Delays

The core mechanics are consistent:

• You serve a payment claim by the due date
• The respondent issues a payment schedule within a strict timeframe
• If they miss that deadline, they may lose the right to raise defences

Security of Payment Act Adjudication: Fast Track or False Start?

The broad sequence is consistent across the schemes:

1. The claimant applies. Lodge an adjudication application with an authorised nominating authority (ANA), which appoints a qualified adjudicator. Attach the payment claim, payment schedule (if served) and submissions.
2. The respondent replies. The respondent gets a short window, commonly around five business days, varying by jurisdiction, to lodge an adjudication response. In most schemes it cannot raise reasons not already in its payment schedule; miss the schedule and you may lose the right to defend.
3. The adjudicator determines. The adjudicator assesses the application on the papers, usually within a set period after the response deadline, and issues a determination. There is generally no hearing or cross-examination.
4. The determination is enforced. The adjudicated amount is payable; if unpaid, the claimant can take the determination to court to enforce it as a debt. It is interim, it does not finally decide the parties’ rights, which can still be litigated or arbitrated.

Two features drive most strategic decisions:

• The respondent’s limited defence. A respondent who fails to serve a payment schedule on time may be barred from raising any substantive defence, making the schedule deadline the single most important date in the process.
• The paper-based limit. Adjudicators decide on the documents before them. Complex delay and disruption claims, concurrent delay arguments and prolongation cost build-ups often need forensic analysis that does not fit the compressed timetable, so they get split, deferred or pushed to a fuller forum.

Where adjudication helps:

• Straightforward progress payment disputes
• Cases where the respondent missed the payment schedule deadline
• Situations where cash flow matters more than final resolution

Where it falls short:

• Prolongation costs that need detailed forensic analysis
• Concurrent delay arguments requiring expert evidence
• Claims tangled up with variations and extensions of time

Digital evidence in an adjudication. Because the adjudicator works only from what you lodge, the quality of your document bundle matters as much as your argument. Export your project management software logs, Procore, Aconex or similar, into a dated, indexed bundle showing when the delay event occurred, what notices were issued, and how the programme moved. A clean, searchable bundle beats loose PDFs.

Calculating Prolongation Costs Without Guessing

Prolongation costs are the time-related costs you carry because the project ran longer than planned, separate from the cost of the physical works.

A common approach breaks them into:

ANY QUESTIONS? →

Liquidated Damages vs Actual Loss: Which Number Wins?

Liquidated damages are a pre-agreed sum payable for delay, set out in the contract. Actual loss is what the affected party genuinely lost, proven with evidence.

They rarely match, and the difference decides strategy.

• Liquidated damages are easier to apply. The rate is fixed, so you don’t have to prove loss.
• Actual loss can be higher or lower. It requires detailed proof but reflects reality.
• A party can usually claim one or the other, not both, for the same delay.

Using a Construction Delay Claim Template to Prove Entitlement

A construction delay claim template keeps your submission consistent and complete, forcing you to address every element a decision-maker expects and stopping you from burying the entitlement in narrative.

A workable template covers:

1. Delay event – what happened, when, and where
2. Contractual entitlement – the clause you’re relying on
3. Notice – proof it was given on time
4. Causation – how the event affected the critical path
5. Programme impact – the forensic analysis behind the delay
6. Cost build-up – every dollar, tied to evidence
7. Mitigation – what you did to reduce the loss
8. Relief sought – extension of time, costs, or both

Building the evidence bundle as you go

The single biggest gap in most delay claims is not the legal argument, it is the evidence trail. Teams that recover costs treat documentation as a live process, not a reconstruction exercise.

• Project management software logs. Procore, Aconex and similar platforms timestamp every RFI, instruction, variation and site diary entry. Export them regularly into a dated, indexed folder so the sequence of events is provable.
• Site photos and drone surveys. Timestamped images and periodic drone flights show progress, standing time and the physical state of the works at each stage.
• BIM model updates. Model revisions can demonstrate when design changes occurred and how they affected the sequence of work.
• Email and correspondence trails. Keep the full thread, not just the final message, so the context of each instruction is clear.

The cost-benefit check before you commit

Litigation is slow and expensive. Before committing to a full claim, weigh the recoverable amount against legal costs, expert fees, adjudication fees and management time:

• Estimate the recoverable amount. Be realistic, not every dollar claimed is recoverable.
• Estimate the cost to pursue. Legal fees, expert reports, adjudicator fees, internal time.
• Estimate the time to recovery. Cash flow matters; a smaller settlement now may beat a larger award in two years.
• Assess the respondent’s capacity to pay. A judgment against a company with no assets recovers nothing.

Insurance and bond recovery

A statutory demand is a formal notice requiring payment of a debt. It can be a powerful tool in debt recovery, but misuse can backfire, so use it only where the debt is clear and undisputed.

Digital Evidence, Insurance and Bond Recovery: The Angles Most Claims Miss

A statutory demand is a formal notice requiring payment of a debt. It can be a powerful tool in debt recovery, but misuse can backfire, so use it only where the debt is clear and undisputed.