Why You Should Diarise Every Retention Release Date and Apply Properly

Every year, millions of pounds of retention funds remain unrecovered because contractors fail to apply for release, miss contractual deadlines, lack the records needed to support their application, or simply assume the paying party will release the funds automatically. 

The reality is that retention recovery requires active management. In some cases it seems like the payee just mentally writes off the retention and never asks for it because they don’t expect it. Likewise, many payers view retention as their money and deploy delays and unsound technical excuses to hang on to it.

As specialist construction solicitors, we see the consequences regularly. Contractors fight hard to secure payment throughout a project, only to leave substantial sums sitting on someone else’s balance sheet because they fail to chase the final stages of payment.

Alternatively, the payer simply makes it hard to recover and the payee gives up.

The assumption is that the costs and risks of recovering will be too high. But that is often not true.

If you are just being ignored, then you have a good chance to recover the retention in a smash and grab adjudication. However, you must know exactly how and when to apply. We’re specialist litigators who advise and represent parties in the construction space. Get in touch with us to discuss the specifics of your case and whether you can recover the retention with a smash and grab adjudication. Our specialist construction litigation team have decades of experience acting in matters like yours and would love to help you.

Retention: Your Money, But Not Yet in Your Bank Account

The problem is that retention release often occurs months, or even years, after the contractor has left site. By that stage:

• Project managers have moved on.
• Staff have changed.
• Project records are harder to locate.
• The release date is forgotten.
• The contract is sitting in an archive.

The result is predictable. Money that should have been collected never is.

The Scale of the Problem

The Government estimates that between £3.2 billion and £5.9 billion of retention is held in the construction sector in England alone in any given year (BEIS, 2017). A worrying amount of it is paid late, or not at all.

Government-commissioned research found that 71% of contractors with retentions held in the previous three years had experienced delays in getting that money back. 44% had lost retention money to upstream insolvency, with an average loss of around £79,900 per firm across their contracts.

In March 2026, the Government confirmed plans to ban cash retentions altogether. Its late payment response noted broad agreement that ‘the withheld money is often subject to unjustified late, partial, and non-payment’, which hits SME contractors and subcontractors hardest. Until that ban is in force, though, retention clauses in existing contracts still apply.

Insolvency remains a real risk. Construction still records more company insolvencies than any other sector in England and Wales (Insolvency Service, 12 months to August 2026). The longer you wait, the greater the chance that whoever holds your retention goes under, and your retention goes with them.

Some payers also raise weak defects or counterclaims to delay release. What these statistics don’t capture is how many retentions go unpaid simply because the contractor never makes a proper application, or doesn’t know that retention can’t be withheld just because the payer hasn’t been paid or signed off by someone further up the chain, unless the party above them is insolvent.

The “Forgetfulness Tax”

In practice, many retention disputes are not legal disputes at all.

Nobody argues about defects.

Nobody disputes entitlement.

Instead, the contractor simply fails to ask for the money, or is easily discouraged when they are ignored or asked for further information.

A project finishes. The defects period expires. Nothing happens.

Six months later, somebody reviewing accounts notices a retention sum on an aged debtors report. By then the relevant project team has dispersed and the supporting records are difficult to locate.

The contractor may still recover the money, but the process becomes more expensive and time consuming than it should have been.

A diary reminder costs nothing.

Why Proper Applications Matter

Even where retention is clearly due, recovering it often depends on making the correct contractual application, at the correct time, and in the way prescribed by the contract.

Many contractors assume release should happen automatically. Frequently that is not how the contract works.

The contract may require:

• A formal application.
• Supporting evidence.
• Confirmation that defects have been rectified.
• A notice to a specified address.
• Compliance with a payment mechanism.

Throughout our work at Helix Law, we regularly advise on payment notices, pay less notices, valuation disputes and recovery of sums certified but unpaid. Many disputes arise not because the money is not due, but because the procedural requirements have been overlooked. For example, construction payment disputes often turn on whether the parties have followed the contractual payment process correctly.

If the application is defective, the payer may seize upon that mistake to delay payment.

What Should Be Diarised?

At a minimum, you should record:

• Practical completion date
• Date the first half of retention (often on practical completion) becomes due
• Defects liability period expiry date
• Date final retention becomes due
• Date application should be submitted
• Contractual notice requirements
• Key contact details for the payer

Ideally, these dates should sit within a company-wide system rather than an individual’s Outlook calendar.

A simple automated reminder can prevent tens of thousands of pounds from going uncollected.

Record Keeping Is Essential

The contractors who recover retentions most effectively typically have excellent project records.

When preparing an application for retention release, it helps to have:

• Practical completion certificates
• Defects schedules
• Evidence of remedial works
• Correspondence confirming defects were addressed
• Valuation history
• Previous payment notices

If a dispute arises, these documents become critical.

The burden often falls on the contractor to demonstrate that the contractual requirements for release have been satisfied.

The Commercial Reality

Many paying parties do not proactively release retentions.

That is not necessarily dishonest. In large organisations, retention release may simply not be a priority.

Cash naturally tends to stay where it sits unless somebody asks for it.

The contractors who recover retention consistently are usually the ones who treat it with the same urgency as an interim application.

Need Advice? Contact Helix Law

Retention is often the last payment on a project, but it should not be treated as an afterthought. It should be pursued with the same intensity that interim and final account recovery payments are.

Government research, industry surveys and years of practical experience all point to the same conclusion: significant sums of retention go unpaid, are delayed, or are lost entirely through insolvency and poor payment practices. In our experience, many avoidable losses arise because contractors fail to monitor release dates or make proper applications.

The lesson is simple: treat retention as your money from day one.

Record every release date when the contract is signed. Maintain the documents needed to support your entitlement. Apply correctly and on time.

The contractors who do this recover their cash more quickly, reduce disputes and improve cash flow. Those who don’t may be leaving thousands, or even hundreds of thousands, of pounds in somebody else’s bank account.

If your retention still isn’t released, we can advise on recovery on a fixed fee or, on qualifying disputes, a No Win No Fee basis. Subject to case assessment and our funding criteria. Available on qualifying disputes typically valued over £10,000 with strong prospects of success. Contact Helix Law today. Our construction team act nationally and are happy to help.