Practical Completion Is a Legal Event: What Changes When the Building Is Almost Ready

Across the world, there is a moment on every building project when the work looks finished. The scaffolding is down, the lifts run, the lights are on and the client's staff are already measuring rooms for furniture. A few doors still need adjusting, some paintwork needs touching up and a handful of minor defects are on a list. Everyone can see that the building is almost ready. What is far less visible is that, under the contract, "almost ready" is not a feeling but a legal state, and that the transition into it is a decision taken by a particular person at a particular time.

A building can be occupied, still have minor items outstanding, and yet not be practically complete in the contractual sense. Equally, it can be certified practically complete while work remains to be done. The difference matters because the certifier's opinion is an event. It changes who is responsible for the works, and it is commonly the moment at which time and money consequences under the contract start or stop. Treating that moment as a handover meeting, a ribbon-cutting or a date in the programme, rather than as a contractual judgement, is how disputes begin at the very end of a project that otherwise went well.

This comprehensive blog will explore what practical completion means in the teaching, and why it is a certifier's judgement that the works are fit to be taken over rather than a statement that everything is finished. We will examine how practical completion differs from sectional completion and from partial possession, why acceleration cannot be assumed to be available, and why possession and access at the very beginning of the job are themselves legal events. Whether you are a client, contract administrator, quantity surveyor, contractor or project manager, understanding practical completion as a legal event is key to knowing what actually changes when the building is almost ready.

1. Fit to Be Taken Over, Not Fully Finished

Under most contracts, completion of the contract is the point at which the parties have fulfilled their obligations to each other and the contract is discharged. In construction, the teaching explains, discharge usually occurs when the works are fully complete and the employer has paid the final bill. After that, the parties' remaining obligations are limited to those that survive under the law of limitation.

Construction contracts differ from a simple contract for the supply of goods in several ways that make a second milestone necessary. Payment is made in instalments as the work proceeds. The employer typically takes possession of the works before they are fully complete, and may take possession of sections at different times. The employer can change the work during the contract, so a mechanism is needed to adjust the agreed completion date. For these reasons, the teaching distinguishes between completion of the contract and completion of the work, and between the date by which the works are required to be completed, often called the date for completion, and the date on which the work is deemed sufficiently complete for the employer to take possession, generally called the date of practical completion or of substantial completion.

The state of completeness is usually decided by the contract administrator. It is that person's opinion that determines whether the works are in a fit state to be taken over by the employer. The teaching is realistic: there will inevitably be some items that are incomplete, and perhaps some defects to be made good. The guiding principle is whether the works can safely be used by the employer for the purposes for which they were designed. It is also a general principle that the administrator must certify practical completion as soon as, in his or her opinion, the works are practically complete, and that the contractor's responsibility for the works ends at that time.

Two features follow. First, practical completion is a judgement, not a measurement. The teaching supplies no numerical threshold for how many snags, or which kinds, will prevent the opinion being given, and none should be invented. Second, because it is a judgement with real consequences for both parties, the independence of the person forming it matters. An opinion that bends to the employer's wish for the keys, or to the contractor's wish to stop the clock, is not the opinion the contract asks for.

The teaching treats the date of practical completion as important for a number of reasons connected with time, money, responsibility and the period that follows. It notes, for example, that responsibility for the completed work commonly passes to the employer when the certificate is issued unless the contract provides otherwise, and that some forms instead use a separate taking-over procedure after practical completion. Beyond that general point, the precise effects of the certificate depend on the form and its particulars. The contract must be read for them; they should not be assumed from a list carried over from another project.

The teaching adds a point about timing that surprises some employers. Where the contractor finishes early, before the contractual completion date, the employer generally has no option but to take the works over, because the administrator must certify once the works are practically complete. Some forms of the period, however, expressly allowed the employer to defer taking over until the contractual completion date, with the contractor remaining responsible for the works in the meantime. Again, the answer lies in the form.

A practical implication, offered here as application rather than as a rule from the teaching, is that the criteria for practical completion are best agreed before the milestone arrives: the documents that must be handed over, the inspections that must have taken place, and the kind of outstanding items that will still allow the opinion to be given.

Figure 1: Discharge is later than practical completion: possession at the start, practical (substantial) completion when the works are fit to be taken over with minor items still possible, and full completion with final payment, when the contract is discharged (teaching distinction, no durations shown).

2. Sectional Completion Is Not Partial Possession

An employer often wants to use part of a building before the whole is finished. The teaching offers two contractual routes for doing so, and it is careful to keep them apart, because they are easy to confuse and they rest on different foundations.

The first is partial possession. Some contracts permit the employer, with the agreement of the contractor, to take possession of parts of the work before practical completion of the whole. The teaching gives the typical reason: the employer may wish to fit out the work or install specialist equipment before putting the building into use. The contractor's agreement is required, though it should not be unreasonably withheld, and the contractor may object if it can show reasonable grounds, such as health and safety. Where the contractor agrees, the relevant parts are taken over with their own certificate.

The second is sectional completion. Here the contract itself requires the work to be completed in specific parts, each by a specified date. The employer decides before the contract is signed that certain sections are to be completed by particular dates, and the necessary information is written into the contract. Each identified section then has its own completion arrangements and its own certificate; in JCT 05 terms, a section completion certificate.

The teaching summarises the distinction in a single sentence that repays attention: sectional completion is a contractual obligation, but partial possession is by agreement. Under a contract without sections, the contractor's obligation is to complete the works by the stated date. It has no obligation to hand over a floor or a wing early merely because the employer would find that convenient. If the employer wants a contractual right to particular parts by particular dates, sectional completion has to be designed into the contract before it is signed. If the need arises later, partial possession is available only by agreement.

Why does the distinction matter so much? Because each route attaches its own conditions and its own consequences to the part concerned. The teaching indicates that when a section completion certificate or a partial-possession certificate is issued, rules similar to those for practical completion apply to the relevant part. The detailed effects follow the form and must be checked in the contract being administered. What both routes share is that they are recorded, certified events. Neither is the same as the employer's staff simply moving in. The choice between them is also a matter of timing. Sectional completion has to be decided while the contract is being prepared, so that the sections and their dates are part of what the contractor prices and programmes. Partial possession is the route for needs that emerge later, and because it rests on agreement, it is only as secure as the agreement actually recorded.

A fictional vignette illustrates the problem. On a multi-storey office project with no sections in the contract, the employer wants to begin fitting out the third floor for an incoming tenant while the contractor is still finishing the storey above and the roof plant. The employer's fit-out contractor is given keys by the site manager, and work begins. Several questions now arise. The project has no sectional completion, so this cannot be a contractual section. It might be partial possession, but only if the contractor has agreed and the part has been taken over with its own certificate. If neither has happened, it is an informal occupancy that has not been placed on any contractual footing, and the responsibilities for that floor are uncertain. The answer depends entirely on which of these routes, if any, the parties actually used.

Figure 2: Three ways the employer can use the building: practical completion of the whole, sectional completion of a section defined in the contract, and partial possession of a part by agreement before practical completion; informal occupancy is not a substitute for any of them (teaching distinction, JCT 05-period terms).

3. Acceleration Is Not a Hidden Duty to Finish Early

When a project is running late, or when an employer would like the building sooner than the contract requires, the natural instinct is to ask the contractor to speed up. The teaching describes acceleration as the employer wishing to speed up the progress of the work, either to recover time lost through delays or to take possession of the completed building before the contractual completion date. It then makes the critical point: not all contracts provide for acceleration. It cannot be treated as an implied power that every employer holds.

The teaching compares four positions from the forms of its period, and the comparison shows a wide spread.

Under the JCT 05 Standard Building Contract, the teaching states plainly that the contractor can never be obliged to finish early. The contractor may agree to do so voluntarily, through the clause 5.3 schedule quotation procedure, which allows the contract administrator to ask the contractor for a quotation for varied work, including early completion. The contractor cannot be forced to provide the quotation requested, and it has a short period within which to object to the request.

Under the JCT Major Projects form, the employer may seek proposals for acceleration from the contractor. The contractor may either make such proposals or explain why early completion is impractical. If the parties agree, the employer instructs the contractor to proceed, but the form makes it clear that such an instruction may not be given without the contractor's express agreement. The teaching notes that other forms of the period contained similar provisions. Yet another form of the period did not permit acceleration to the original completion date at all, but did provide procedures for accelerating to recover delays for which the contractor would otherwise be entitled to more time.

PPC 2000 takes a different approach. Under that form, the client representative may instruct acceleration, postponement or re-sequencing of dates or periods in the project timetable. The contractor must comply, subject to a right of objection where the instruction is contrary to a partnering document or demonstrably not in the best interests of the project. The objection is then discussed by the project team, after which the client representative may confirm the instruction; if it is confirmed, the contractor must either comply or use the dispute resolution procedure.

The FIDIC Red Book reverses the initiative. Under clause 13.2, the contractor may submit an unsolicited written proposal to the engineer which may, among other things, accelerate completion. If the engineer approves it, the proposal is treated like any other variation.

Set side by side, these positions run from no obligation to finish early at all, through quotations and proposals that depend on agreement, to an instruction subject to objection, and finally to a contractor-led proposal treated as a variation. That spread is the lesson. Whether an employer can obtain earlier completion, on whose initiative, and on what terms, depends on the form actually signed. There is no general rule that a contractor must accelerate because the employer asks, and no rate or consequence of refusal should be assumed from one form and applied to another. These are period illustrations, and current editions must be checked.

There is a practical corollary, offered here as application. Because acceleration under most of these positions depends on agreement or on a defined procedure, the time to settle its price and its effect on the completion date is before the contractor changes its working, not afterwards. An employer who simply urges the contractor to go faster, without using the mechanism the form provides, may find later that there is no agreed basis on which the extra effort is to be paid for, and no clear record of what was asked.

Figure 3: Acceleration depends on the form: four period positions, from no obligation to finish early under JCT 05, through agreed proposals under JCT Major Projects and an instruction subject to objection under PPC 2000, to a contractor's proposal treated as a variation under FIDIC Red Book clause 13.2 (period teaching; current editions must be checked).

4. Possession and Access Come First

If practical completion is the legal event at the end of the job, possession is the legal event at its start, and the two are connected: the period the contractor is given to build runs between them.

The teaching distinguishes several dates that are often run together: the date on which the contract comes into existence, the date from which the works may begin, and the date on which the contractor is allowed onto the site. Under the JCT 05 forms, the contract includes a date for possession of the site, and the contractor is required to begin construction then and proceed regularly and diligently. For practical purposes, the date of possession and the date of commencement are the same under those forms. Other forms, the teaching notes, separate these dates more explicitly. One form of the period distinguished a contract date, a starting date and access dates, linking payment to the starting date. PPC 2000 went further, recognising pre-possession activities in a separate agreement, with a commencement agreement completed only once possession and access were available. The common point is that the start of a project is not one event but several, and the contract decides which of them carries legal weight.

It also distinguishes possession of the site from a right of access to it. The site may be in the employer's ownership while access depends on rights granted by third parties, such as adjoining owners. Some forms of the period, notably the civil engineering forms, expressly required the employer to grant both possession and a right of access. The JCT 05 Standard Building Contract, by contrast, made no mention of access, and the teaching observes an implicit assumption that possession of the site must include the necessary access. Most forms also assumed that possession would be exclusive to the contractor for the period of the works, although at least one, the FIDIC Red Book, made clear that it need not be. Even exclusive possession does not prevent specified others, such as the contract administrator and the employer's own direct contractors, from being given access.

Timely possession matters because failure has serious consequences in time and money. The teaching states that, in the absence of any specific contractual provision, failure by the employer to grant possession or access by the due date would constitute a repudiatory breach of contract, for which the contractor could either terminate the contract or sue for damages. That is precisely why most major contracts provide contractual remedies when possession is delayed, generally an extension of time with costs. Even so, the teaching cautions that an unreasonable delay may still be treated as a fundamental breach. The forms differ considerably in how they handle prolonged delay, so the remedy in any particular case lies in the contract, not in a general rule.

The start of the job is also where the basis for judging time later is laid. Since almost all construction contracts provide for extensions of time, the teaching explains, the contract administrator needs information about the proposed rate of progress in order to judge what extensions are fair and reasonable. Most projects of any size therefore require a programme, although the forms vary in the detail required, the sanctions for failing to provide one and the programme's contractual significance. An accepted programme is part of good administration of time. The method of assessing extensions is a separate subject.

The forms of the period also allowed the employer to postpone the works, and where that power is used its time and money consequences should be taken from the form itself.

Figure 4: Possession and access are not the same event: possession of the site and a right of access to it are related but separate grants at the start of the job; without a contractual remedy, failure to give either by the due date is taught as potentially repudiatory (period teaching; forms differ on remedies).

5. Agree the Test Before the Argument Starts

Because practical completion is an opinion, the worst time to work out what it means is the week the employer wants the keys. By then, commercial pressure is at its height. The employer may have tenants waiting, the contractor may be watching the completion date, and both may be tempted to treat the certificate as a bargaining chip. A modest amount of preparation removes most of that pressure.

The following review aid is offered as practical application of the teaching, not as a protocol drawn from it. It is intended to be used well before the milestone, and revisited as completion approaches.

1. What does this contract mean by practical completion, sectional completion and partial possession? The terms may differ between forms, and the contract may define sections, a taking-over procedure or other particulars that change the analysis.

2. What outstanding items would still allow the works to be called fit to be taken over? The teaching's guiding principle is whether the works can safely be used for their intended purpose. The parties can agree in advance how that principle will be applied to this building, without pretending that a numerical threshold exists in the teaching.

3. What documents and inspections are required before the opinion is given? If certain records, tests or approvals are needed before the employer can safely use the building, it is better to know that months in advance than to discover it at the final inspection.

4. If the employer wants to use part of the building early, which contractual route is being used, and has any required agreement been given? Sectional completion must already be in the contract. Partial possession requires the contractor's agreement and its own certificate. Anything else is informal occupancy.

5. If earlier finish is wanted, does this form provide for acceleration, and by whose agreement or instruction? The answer may be that it cannot be required at all, that it can be sought by quotation or proposal, that it can be instructed subject to objection, or that it is for the contractor to propose.

Returning to the fictional office project, the aid would have prompted the right question before the fit-out contractor arrived: which route is the third floor on? If the parties had agreed partial possession, the floor would have been taken over with its own certificate and its own consequences under the contract. If they had not, the honest record would be that the floor has not yet been placed on any contractual footing, and the employer's fit-out should wait, or the parties should agree the position first. Either outcome is defensible. What is not defensible is an occupation that nobody has classified.

It also helps to decide in advance how the certificate itself will be recorded: the date on which the opinion was formed, the basis on which it was given, and any list of outstanding minor items or defects that the parties accept will be dealt with afterwards. A certificate supported by that record is far harder to reopen than one issued in haste.

The aid does not remove the need for judgement. It simply ensures that, when the administrator forms the opinion, the parties already know what is being judged and what will follow.

Conclusion

Practical completion is a certifier's opinion that the works are fit to be taken over by the employer. It is not a synonym for "almost done", and it is not the same as full completion and discharge, which come later when the work is fully finished and the final bill has been paid. Because it is an opinion with real consequences, it should be formed independently, as soon as the works are practically complete, and against criteria that both parties understood before the milestone arrived.

The tools around it are different and should not be confused. Sectional completion is a contractual obligation designed into the contract before signature, with sections and dates of their own. Partial possession is a taking over of part of the works by agreement, with its own certificate. Informal occupancy is neither. Acceleration is not a hidden duty to finish early: under some forms of the period the contractor could never be obliged to finish early, while others allowed proposals by agreement, instructions subject to objection, or contractor-led proposals treated as variations.

At the other end of the job, possession and access are themselves legal events. They are related but separate grants, and failure to give them by the due date, absent a contractual remedy, is taught as potentially repudiatory. The forms supply remedies precisely because that consequence would be so severe.

The common thread is that each of these milestones is a named, recorded event under a particular contract, not a feeling about how ready the building looks. The practical discipline is to name the event the parties actually intend, agree how it will be judged, and only then issue the certificate.