Occupying a Property Before Practical Completion: Risks and Considerations

Introduction

In many residential renovation and extension projects in north London, homeowners are eager to move back into their property as soon as possible — sometimes before the contractor has issued the practical completion certificate. Occupying a property before practical completion is possible but carries contractual and insurance risks that must be understood and managed. This guide explains what occupying before practical completion means, the risks involved, and how to manage the transition responsibly.

What Is "Occupation Before Practical Completion"?

Under most standard building contracts (including JCT Minor Works), practical completion is the point at which the employer formally takes possession of the completed works. Before that point, the contractor has possession of the site and the works. If the employer (homeowner) moves back in before practical completion is certified, they are occupying the contractor's works — a potential breach of the contract unless provision is made for it.

Contractual Risks

Moving back into the property before practical completion can create several contractual complications:

• Risk of implied practical completion: If the homeowner moves in and starts using the completed works, a court might imply that practical completion has occurred — even if the contractor and Contract Administrator have not formally certified it. This could trigger the release of retention, start the Defects Liability Period, and affect liquidated damages entitlement earlier than intended.
• Difficulty of snagging: It becomes harder to identify and document outstanding defects and snagging items once the homeowner is in occupation and the works are being used. Items may be damaged or obscured before snagging is complete.
• Programme disruption: The contractor still needs access to complete outstanding works — this becomes more difficult and disruptive once the homeowner is in residence.
• Sectional completion: Where the works can genuinely be split — e.g., the main house is habitable while work continues on the extension — sectional completion provisions in the contract may allow formal partial possession without the complications of informal occupation.

Insurance Implications

During construction, the contractor typically insures the works under a Contractor's All Risks (CAR) policy. At practical completion, risk passes to the employer and the homeowner's buildings insurance must respond. If the homeowner occupies the property before practical completion:

• The contractor's CAR policy may not cover damage to the works once the employer is in occupation
• The homeowner's buildings insurance may not extend to cover damage to unfinished works or works in progress
• There is a potential insurance gap — a period during which neither policy clearly responds to damage

Before occupying, the homeowner should confirm with both the contractor (or their insurer) and their own buildings insurer that the relevant policies respond correctly to the occupation arrangements. Adjustments to both policies may be required.

Managing Early Re-Occupation Properly

Where early re-occupation is desired and cannot be avoided:

1. Discuss with the architect and contractor before occupation begins — do not simply move in without notice
2. Consider formally certifying sectional practical completion for the habitable portion of the works if the contract allows
3. Agree in writing with the contractor the areas that are still under their control and the programme for completing outstanding works
4. Confirm insurance arrangements with both the contractor's insurer and the homeowner's insurer
5. Complete a thorough snagging inspection before occupation begins — thereafter it becomes harder to distinguish between items incomplete at occupation and damage caused by occupation

Practical Completion Certificate After Occupation

The fact that the homeowner has moved in does not automatically mean that practical completion has occurred — it is still the Contract Administrator's professional judgement that determines when the formal certificate is issued. However, the CA must be careful that their assessment of the works' completion is not compromised by the homeowner's occupation — some items may be difficult to inspect in an occupied property.

Conclusion

Moving back into a property before formal practical completion is a common desire but carries real contractual and insurance risks that are easily avoided with proper advance planning. Where early occupation is genuinely needed — to avoid costly temporary accommodation in north London — the architect can manage the process through formal sectional completion or a carefully documented occupation agreement. What should be avoided is informal early re-occupation without contractual or insurance provision, which can create problems that are disproportionate to the inconvenience of waiting a few more weeks for formal completion.