Overdue retention is usually not a dispute. It is an administrative failure at the other end, where the people who ran the project have moved on and nobody owns the release. Treating it as an argument when it is actually an omission wastes time, which is why a retention recovery assessment establishes the position before anything is sent.
The approach that works is unglamorous: establish the figure, establish the entitlement, identify the right person and make it easy for them to pay.
Establish the figure first
Reconcile the retention deducted across the certificates against what has been released, and arrive at a balance you can evidence.
A request for an unspecified balance invites a response that the matter is being looked into, which is where it stops.
A request for a specific figure, with the certificates referenced, is much harder to set aside.
Establish why it is due
Which contractual event triggered release, when it occurred, and what the contract then required.
Where the trigger has not occurred, chasing the money is premature and the effort belongs on the trigger instead.
That distinction determines everything about what you send, and getting it wrong undermines an otherwise good position.
Find the right recipient
The contractual address may be a company that has restructured, an individual who has left, or a project office that closed.
Sending to the contractual address is necessary and frequently not sufficient. Finding somebody who can actually act is the practical step.
Finance departments are often more productive than former project staff, because an evidenced balance is simply something they can process.
Make it easy to pay
Attach the reconciliation, reference the certificates, state the contractual basis in two sentences and give the payment details.
A request that requires the recipient to investigate will be deferred. One that requires only a decision will be decided.
That is a presentation point and it is worth more than any amount of firmness.
Escalating sensibly
Start with a straightforward request. Follow with a reminder referencing the first. Then escalate to somebody more senior, enclosing the history.
Each step should be short and factual. Correspondence that becomes aggrieved tends to get filed rather than actioned.
Keep the record, because a sequence of reasonable unanswered requests is itself useful if the matter has to go further than correspondence.
Where there are defects outstanding
If the employer holds the money against genuine outstanding items, ask for the list and deal with the items rather than the balance.
Where the list is modest relative to the retention, propose valuing the items and releasing the remainder, which is usually accepted.
Where no list is produced despite being requested, that absence is a position in itself.
When to stop being patient
Where requests have gone unanswered for months, where the counterparty appears to be in difficulty, or where a contractual deadline is approaching.
At that point the question becomes whether to take a formal step, which turns on the sum involved and the cost of pursuing it.
Adjudication is available in many construction contracts and is a proportionate route for a clear retention claim, which is why these claims rarely need to go further.
What usually unlocks it
A reconciliation the other side can check. A clear statement of the contractual trigger. And somebody at the other end with authority to pay.
Those three together resolve most overdue retention without anything formal being required by either side, which is how it should be.
The ones that do not resolve are usually the ones where the trigger has not actually occurred, which takes the matter back to the defects sequence.
From the employer side
An unanswered retention request is an accumulating liability rather than a saving, and it attracts cost once it becomes formal.
Where the money is genuinely due, paying it promptly costs nothing and preserves a relationship.
Where it is not, saying so with reasons is far better than silence, because silence is what turns an administrative matter into a formal dispute nobody wanted.
The letter that works
Short. The balance, the certificates it comes from, the contractual event that released it, the date that event occurred, and the payment details.
One page, with the reconciliation attached. Anything longer gets read later rather than now.
Tone matters less than clarity, but a letter written in frustration invites a defensive answer and a list of items nobody had previously raised.
When the project is long finished
Balances from projects that completed years ago are frequently recoverable and frequently never pursued, because nobody owns them internally.
A periodic review of outstanding retention across completed projects usually finds money, and it takes an afternoon.
The longer a balance sits, the weaker it looks to the party holding it, which is an argument for acting sooner rather than for waiting to see whether it arrives.
Interest and the cost of waiting
Whether interest is recoverable on retention held beyond its release date depends on the contract and on the circumstances.
What is certain is that the money has been unavailable, which is a real cost even where it cannot be claimed as one.
Mentioning that cost in correspondence occasionally concentrates minds, particularly where the balance has been outstanding for years.
Where it fits
Chasing retention is deliberately a narrow exercise, proportionate to a balance that is usually small relative to the project.
Where it forms part of a wider disagreement about the account, it is addressed with everything else through final account dispute review.
Keeping the retention position current through the project is commercial management work, and it is what prevents the chase being necessary.
Retention that has not come back?
A retention recovery assessment establishes the balance from the certificates, fixes the release dates from the contract and sets out what has to happen before the money falls due.