The building is complete. The contractor has demobilised. Residents have moved in. And for the next twelve months, or twenty-four in a lot of residential schemes, someone has to receive every complaint, decide whether it is a defect or wear and tear, route it to the subcontractor who did that work, chase it, and prove it was fixed.

That job is rarely designed. It gets absorbed by whoever is nearest, usually with a spreadsheet and an inbox, and it goes wrong in the same way every time: items get raised and never closed, closure is claimed but never verified, and the period expires with a list nobody can defend.

This article covers how to run that period. It assumes the building has already been handed over, and it uses UK and Commonwealth contract vocabulary, since JCT and FIDIC terminology dominates the subject. The equivalent United States mechanism is the correction period, and specific durations and statutory periods differ everywhere. For what you should have received at completion, including the asset register, warranties, and O&M documentation, see RIOO's building handover playbook.

Key takeaways

• The defects liability period is an evidence exercise. The contract gives you the right to rectification. Documentation is what proves you exercised it.

• The period does not end the contractor's liability. Statutory limitation periods run far longer.

• Contractors have no automatic right to return to site. That right comes from the contract.

• Rectifying an item can restart the clock on that item under some contracts.

• The daily work is classification: deciding what is a defect, what is damage, and what is wear.

In this guide

• What is defect management?

• How long is the defects liability period?

• Does the defects period end the contractor's liability?

• What belongs in a defect register?

• Is it a defect, damage, or wear and tear?

• How do you handle defects once residents have moved in?

• What happens when a contractor will not return?

• The subcontract gap nobody checks

• How to tell whether the defects period is being run well

• Common mistakes

• Frequently asked questions

What is defect management?

Short answer: Defect management is the process of recording, classifying, assigning, chasing, and verifying the rectification of defects in completed work. On a new building it runs from practical completion through the defects liability period, and it involves three parties who are no longer in the same room: the contractor who built it, the operator running it, and the occupants living in it.

It is distinct from maintenance. A defect is work that was not delivered to the standard the contract required. Maintenance is the upkeep of work that was. Confusing the two is how operators end up paying for defects and how contractors end up returning for wear.

How long is the defects liability period?

Short answer: Twelve months is the most common, though contracts specify anywhere from six to twenty-four months depending on the project. Residential developments often use twenty-four months. The period exists only because the contract creates it, and its length is whatever the contract says.

Terminology varies. Under JCT contracts it is the rectification period. Under FIDIC it is the defects notification period. In United States contracts the nearest equivalent is the correction period. They describe similar mechanisms but are not exact equivalents, and the contract governs.

One detail worth extracting from your own contract before you need it. Under some agreements, when an individual item is rectified a fresh period starts for that item, running the same length from the date of the repair. That means a component repaired in month eleven can carry an obligation well past the general expiry, and it means a repeatedly failing item can stay in scope indefinitely until it stops failing.

Does the defects period end the contractor's liability?

Short answer: No, and this is the most consequential misunderstanding in the whole subject. The defects period is the window in which the contractor is expressly required to come back and fix things. It is not the boundary of their liability for defective work.

Construction contract specialists make the point directly, noting that the name itself is unfortunate because it gives the impression liability ends when the period does, which is not the case, and that JCT has since adopted the term rectification period partly to reduce that confusion.

Underneath the contractual period sit statutory limitation rules. In England and Wales these are commonly six years for a simple contract and twelve years where the contract was executed as a deed, with longer periods applying to certain building safety claims. Other jurisdictions set their own limitation and repose periods, which differ considerably.

Two practical consequences follow.

Expiry is a deadline for the easy remedy, not for your rights. After it, the contractor is generally no longer obliged to return and fix the item themselves, but a claim for defective work may still be available. That is a legal route rather than an operational one, which is why the pre-expiry sweep matters so much.

Retention is your leverage while the period runs. Many contracts release the remaining retention or security once the period closes and outstanding defects are resolved. Once that money is gone, so is the practical pressure.

What belongs in a defect register?

Short answer: Enough to prove that each defect was reported, accepted, rectified, and verified. Anything less and you have a list rather than a record, and a list will not support a dispute.

The defects period is, above all, an evidence exercise. The contract gives you the right to have defects rectified. The documentation is what proves the right was exercised properly, and weak records are the most common reason a contractor is asked to return to a job they believed was closed.

The two photographs are the pair that decides disputes. A photograph of the fault proves the defect existed. A photograph of the completed work, with sign-off, proves it was resolved. Registers holding only the first are common, and they leave you arguing about whether an item was ever closed.

Where these records live matters less than that they live in one place. A defect raised by a resident through a portal, a defect found by an inspector, and a defect reported by a site team should all land in the same register with the same fields, which is the same discipline that governs maintenance request intake generally.

Is it a defect, damage, or wear and tear?

Short answer: A defect is work that fell short of the required standard. Damage is harm caused after completion by someone or something. Wear is the expected deterioration of work that was delivered correctly. Generally only the first falls within the contractor's rectification obligation, subject to the contract and applicable law, and getting this classification wrong in either direction is the most expensive routine error in the period.

Three rules that make this manageable at volume.

Classify at intake, not at review. The person receiving the report should record what they think it is and why. Reclassification later is fine. Absence of an initial classification is not, because the reasoning is gone by then.

Document the basis, not just the conclusion. "Wear and tear" as a bare category invites a dispute with a resident. "Wear and tear, unit occupied 19 months, no defect recorded at handover inspection" does not.

Assume defect where the answer is unclear and the period is closing. An item wrongly raised as a defect costs an inspection. An item wrongly dismissed as wear, three weeks before expiry, costs the repair.

How do you handle defects once residents have moved in?

This is the part that separates a construction defect process from a residential one, and it is where most schemes struggle.

The contractor has demobilised, the subcontractors have moved to other jobs, and the people reporting problems now live in the building and have no contractual relationship with anyone who built it. They contact the operator or the developer's customer care team, expect a response, and reasonably do not care where the boundary between defect and maintenance sits.

Four things that make it work:

A single reporting route. If residents can report through a portal, an email, and a phone call, you have three registers and no complete picture. One route, however they reach you, feeding one record.

Published response standards. In the United Kingdom the Consumer Code for Home Builders requires developers to operate a documented after-sales procedure and respond promptly to reported defects. It does not fix a specific number of days, which means the standard is yours to set. Define acknowledgement, inspection, and rectification times for non-urgent items, with urgent issues handled far faster, and publish them. Unstated expectations are the source of most complaints, and a standard you set and meet is better than one a resident assumes and you miss.

Access coordination. Every rectification in an occupied unit needs an appointment with someone who works during the day. Appointment adherence, not repair time, is usually what residents actually judge you on.

Separation of urgent from routine. No heating, no hot water, water ingress, and anything affecting safety cannot queue behind a list of cosmetic items. Define the urgent categories in advance and route them separately.

What happens when a contractor will not return?

Short answer: Check the contract first, because the right to return and the obligation to return are not the same thing, and the position is less automatic than most people assume.

Construction law guidance is clear that defects liability provisions only exist if the contract includes them, and contractors do not have an automatic right to return to site to fix defects. Equally, employers considering bringing in another contractor should look carefully at the wording of the rectification provisions before doing so, since the contract usually sets out what has to happen first.

The typical escalation, subject to what your contract actually says:

1. Formal notice of the defect, in the manner and to the address the contract specifies. Informal chasing is not notice.

2. A reasonable period to respond, as defined by the contract rather than by patience.

3. Notice of intention to have the work carried out by others if the contractor does not act.

4. Engagement of an alternative contractor, with costs recovered from retention or claimed.

Two cautions. Doing this out of sequence can prejudice your recovery, and courts assessing whether it was reasonable to refuse a contractor's return can take the state of the relationship between the parties into account. Take advice before reaching step four.

The subcontract gap nobody checks

A trap worth knowing about, particularly on larger schemes.

A subcontractor's defects period may run from the date that subcontractor completed its own package rather than from practical completion of the whole project. On a scheme where the groundworks package finished fourteen months before the building did, a twelve-month subcontract period has already expired on the day the head contract period begins.

The main contractor remains liable to the employer for the full period. The subcontract that was supposed to back that liability has gone. If you are the developer or the operator, this is not your contract to fix, but it explains a category of resistance you may encounter and it is worth asking about before it becomes a dispute.

How to tell whether the defects period is being run well

Month nine is the one to watch. A defects register reviewed at month twelve is a report. Reviewed at month nine, it is still a plan.

Common mistakes

Frequently asked questions

1. What is a defects liability period?
A defined period after practical completion during which the contractor is contractually required to return and rectify defects in the completed works at their own cost. It is also called the rectification period under JCT contracts and the defects notification period under FIDIC.

2. How long is a defects liability period?
Twelve months is most common, with contracts specifying anywhere from six to twenty-four months. Residential development schemes often use twenty-four months. The length is whatever the contract states.

3. Does the defects liability period end the contractor's liability for defects?
No. It is the period during which the contractor is expressly required to carry out rectification. Statutory limitation periods run considerably longer. In England and Wales these are commonly six years for a simple contract and twelve years where executed as a deed, with longer periods for certain building safety claims. Other jurisdictions set their own.

4. What is the difference between a defect and wear and tear?
A defect is work that fell short of the standard the contract required. Wear and tear is the expected deterioration of work that was delivered correctly. Damage is harm caused after completion. Generally only defects fall within the contractor's rectification obligation, subject to the contract and applicable law.

5. What should a defect register contain?
Description and precise location, date raised, who raised it, category and severity, the party assigned, a photograph of the fault, target and actual rectification dates, a photograph of the completed work, verification and sign-off, and status history.

6. Does a contractor have to come back and fix defects?
Only if the contract provides for it. Defects liability provisions arise from the contract, and contractors do not have an automatic right, or in every case an obligation, to return to site. The contract governs both the right and the process.

7. What can you do if a contractor refuses to rectify a defect?
Follow the contract's escalation route: formal notice, a reasonable period to respond, notice of intention to engage others, then engagement of an alternative contractor with costs recovered from retention or claimed. Doing this out of sequence can prejudice recovery, so take advice first.

8. Does fixing a defect restart the defects period?
Under some contracts, yes. A rectified item may carry a fresh period of the same length running from the date of repair, meaning obligations on that item can extend beyond the general expiry. Check the specific wording.

9. Who handles defects once residents have moved in?
Usually the developer's customer care team or the managing agent, acting as the single point of contact. Residents have no contractual relationship with the subcontractors who did the work, so the operator receives, classifies, routes, and chases on their behalf.

10. When should you do the pre-expiry defect sweep?
Around month nine of a twelve-month period, or with at least three months remaining. That leaves time to inspect, raise items, serve notice, and allow a response before the period closes.

The defects period is not a warranty and it is not a grace period. It is a contractual window with an evidential burden attached, and the burden sits with whoever wants the work done.

The registers that hold up are not the detailed ones. They are the ones where every closed item carries a photograph of the finished work and the name of the person who accepted it.

This article provides general information and is not legal advice. Defects liability provisions, limitation periods, notice requirements, and consumer obligations vary by jurisdiction and by contract form. Confirm your position against the governing contract and with qualified counsel before acting on it.