The 12-month gray zone: what happens after DLP-end

"We've gone past the defects liability period, but people are still charging at us to fix repairs. If we don't do a repair, it escalates into a legal situation." That is from an Operations Director at a regional housebuilder, speaking in 2025. It describes, with operational precision, what follows DLP-end: one side of the boundary believes the contractual obligation has closed, the other side is still calling.

Twelve months after practical completion, the defects liability period still has a year to run. At month 24, the developer's obligation under the NHBC Buildmark warranty formally ends. The disputes do not expire with it. The period between DLP-end and the resolution of all claims arising within it is where operational risk concentrates. Most organisations have no structured process for that period.

The contract has an end date. The situation does not.

The defects liability period is a contractual mechanism with a fixed endpoint. Under the NHBC Buildmark warranty, it runs for two years from legal completion. During that period, the developer is obliged to remedy defects reported by the homeowner. At month 25, structural coverage passes to NHBC for years three through ten. The developer's direct remediation obligation formally steps back.

That transition looks clean in the contract. Three things make it messy in practice.

The first is timing. Defects reported in month 22 or 23 may not be resolved by the time the DLP closes. The report was made within the contractual window. The repair was not completed within it. Whether the developer remains obliged to close those items depends on the specific facts and, frequently, on what the record shows.

The second is latency. Settlement cracks, condensation patterns, drainage failures and water ingress often do not present clearly until the property has been through two or three seasonal cycles. At month 26 or 30, a homeowner with a new defect does not accept that the contractual calendar governs whether anyone engages with it.

The third is the homeowner's frame of reference. Most buyers do not distinguish between developer obligation, NHBC structural guarantee, and their own maintenance responsibility. They know something is wrong with a new home they paid for. The question of who is technically responsible is not something they will accept as a final answer.

Why the post-DLP period is not low risk

The assumption in many operations teams is that DLP-end marks a risk reduction: fewer obligations, lower contact volumes, narrower exposure. That assumption misidentifies where the risk went, not whether it reduced.

The New Homes Ombudsman's jurisdiction covers complaints originating from defects within the DLP, even when those complaints are filed after it has expired. A defect reported in month 20, not properly closed before DLP-end, and escalated by the homeowner at month 28, is a live Ombudsman exposure at month 28. The calendar end date does not determine the Ombudsman's remit. The relevant question is whether the obligation arising within the DLP was properly discharged.

The New Homes Quality Code reinforces this. Registered developers are required to have a customer care policy extending through the defects liability period. A complaint about how a DLP defect was handled reaches the Code even if it arrives after the window has closed. The relevant test is not when the complaint was filed. It is what the process looked like when the underlying event occurred.

The Building Safety Act 2022 and the extended limitation periods under the Defective Premises Act create a longer tail. For residential buildings completed after June 2022, claims under the Act can be brought for fifteen years. For completed stock, the retrospective extension reaches thirty years. The DLP covers twenty-four months of that exposure. The remainder sits on the balance sheet regardless of what happened at DLP-end.

Tenure structure adds a further dimension. Where the developer retains an interest as freeholder, registered provider, or management company, the residential relationship continues beyond the warranty calendar. The resident in a shared ownership scheme or a build-to-rent asset does not recognise a contractual end date as the boundary of the organisation's accountability. The landlord relationship creates continuing obligations that the DLP does not govern.

The record from during the DLP is the evidence base for everything after it

Disputes arising post-DLP are almost always resolved by reference to what happened during it. Was the defect reported? When? Was it attended to, and by whom? Was the repair completed, closed, and documented? Did the homeowner acknowledge it?

Each of those questions has a factual answer. Whether that answer is accessible and defensible depends entirely on how the DLP was managed.

The most common failure is not that defects went unresolved. It is that resolutions were not evidenced. A subcontractor attended, completed the repair, and marked it done in their own system. The central plot record still shows an open item. The homeowner received no confirmation that anyone came. When the dispute surfaces eighteen months later, the organisation cannot reconstruct what happened. That gap becomes the basis of the claim.

The structurally worse failure is passive closure: defects that aged out of the active queue because no follow-up was triggered, recorded as resolved by default at DLP-end, but in fact unresolved with the documentation trail gone cold. An Ombudsman investigation or a disclosure exercise in litigation will find those items. They are not closed. They are unresolved with the clock stopped.

Both failures share the same characteristic. The record does not reflect operational reality. The information needed to defend a post-DLP dispute either does not exist in a usable form, or requires manual reconstruction from multiple systems at the point where accuracy matters most and time is shortest.

Most operations teams compound this because the record never existed in one place to begin with. Pre-completion snagging, contractor defect management, and homeowner contact management sit in separate tools, each holding fragments of the story. Reassembling them for a specific plot and a specific defect, months or years after the fact, is the point where errors, omissions and interpretive gaps enter. What reaches an Ombudsman or a court is rarely the record as it actually was.

The organisation that ran the DLP with discipline, every report captured, every attendance recorded, every closure evidenced, and every outstanding item clearly flagged before the period expired, is in a materially different position when a post-DLP claim arrives. The record is the defence. Where it cannot be produced, the claimant's account fills the space.

What this means in practice

Post-DLP risk is not addressed at DLP-end. It is determined by the process discipline applied across the two years preceding it. Every defect entering the record needs to exit with documented closure. Every item still open as the DLP approaches its end needs a clear status and a defined owner, whether that is completion by the developer or a formal referral to NHBC for structural coverage. That transition needs to be a managed handoff, not a default.

Achieving that across a multi-site portfolio requires a record that holds continuously across the full DLP: not separate tools for snagging, defect management, and homeowner contact, but a single auditable trail from pre-completion through DLP-end and into whatever follows it. Guided Home's homeowner-facing layer keeps that record live for both the resident and the operations team simultaneously, so closures are evidenced when they happen, outstanding items surface before they age out, and the record at DLP-end is one the organisation can stand behind if the question is ever asked.

How Guided Home helps

The twelve-month gap between DLP expiry and warranty enforcement is where evidence matters most — and where most developers' records are weakest, because the structured process ended at handover.

Guided Home's Inspections and Defects module maintains the defect record beyond the DLP — every item logged, dated, assigned and resolved with a full audit trail. The Document Assurance engine confirms that completion documentation, warranty certificates and safety information were issued and acknowledged at handover, providing the evidence base you need if a complaint escalates during the gap period.

Where homeowners have questions about their warranty coverage or what was communicated at handover, Hugo answers from the record — reducing the volume of queries that reach customer care and creating a traceable log of every interaction.

If you are reviewing your post-DLP exposure, we would welcome a conversation.