For subcontractors, tracking release conditions is as important as recording the amount withheld.
A subcontractor finishes on site, moves to the next project and files the final claim. Months later, someone notices a retention balance that nobody has followed through. The amount was recorded, but the event that should trigger the next action was not.
A retention diary can close that gap. It links money to the relevant contract, the remaining obligations and a named person responsible for checking progress.
Record the condition as well as the date
MBIE explains that retention release depends on the subcontractor completing the relevant contractual obligations, including applicable defect obligations. The timing can differ between trades and contracts. Practical completion of the overall project is therefore not a universal answer for every balance.
For each contract, record the amount withheld, the supporting statement, the release provisions and any outstanding information. Use a review date where the actual release date is not yet established. Label it clearly so a reminder does not become a false assertion that payment is already overdue.
Keep communications and evidence together. A record of completed work, responses to notified defects and the relevant correspondence is more useful than an isolated number in the accounting system.
Ask precise questions
Instead of a general request for “all retentions”, identify the contract and ask what remains outstanding under its terms. If there is disagreement about an obligation or release date, obtain construction-contract advice rather than accepting an unexplained delay or making assumptions about enforcement.
Retentions are also not ordinary working cash for the party holding them. New Zealand has specific statutory protections and administration requirements. A diary helps administration; it does not replace the legal arrangements required to hold money correctly.
For the subcontractor’s own forecast, keep expected receipts realistic. A balance may belong in the accounts while its collection date remains uncertain. Explain that distinction to anyone using the forecast to make spending decisions.
A short monthly review can focus on three questions: which balances changed, which conditions were satisfied and which follow-ups now need an answer? Giving each action an owner makes the process manageable without turning every project into another chain of repeated, unfocused emails.