Sectional Completion and Partial Possession

Large construction projects rarely complete as a single entity at a single moment. Hospitals hand over ward by ward. Retail developments phase their openings. Infrastructure projects commission in sections. The legal framework for managing these phased completions — sectional completion and partial possession — has significant implications for the liquidated damages regime, the defects liability period, and the contractor’s insurance obligations.

The Problem

The problems that arise with sectional completion and partial possession cluster around two issues. First, the interaction between sections and the liquidated damages regime: where a contractor completes some sections on time but is late on others, the employer must correctly identify and apply the LD rate for the late section while releasing retention and recognising practical completion for the completed sections. Getting this analysis wrong — applying the wrong LD rate, or applying LDs to the whole works when only one section is late — creates a financial dispute.

Second, the distinction between sectional completion (defined in the contract) and partial possession (which may not be pre-defined) is important and frequently confused. Partial possession of an area that has not been designated as a section in the contract cannot reduce the overall LD liability unless the contract expressly provides for proportional reduction on partial possession.

The Legal Principle

Under JCT SBC 2016, Schedule 2 provides for Sectional Completion — with each section having its own date for completion, its own period of delay damages (also known as liquidated damages), and its own defects liability period. The relevant LD rate applies to each section independently.

Clause 2.33 of JCT SBC 2016 addresses Partial Possession: where the employer takes possession of part of the works before practical completion of the whole (with the contractor’s consent), the relevant portion of retention is released, the defects liability period begins for that part, and the employer’s insurance obligation shifts for the taken-over part. Crucially, Clause 2.33.3 provides that the liquidated damages rate is reduced proportionally to the value of the part taken into possession.

Under FIDIC Red Book 2017, Clause 10.2 similarly addresses taking over of sections or parts, with the completion obligation and performance security obligations adjusting accordingly.

Practical Application

For contractors: ensure that the sectional completion dates, LD rates, and values for each section are clearly defined in the contract before execution. Where sections are not pre-defined, be cautious about agreeing to partial possession without first negotiating the proportional reduction of the LD rate. Always formalise partial possession in writing — including the date, the area taken over, and the agreed reduction in LDs.

For employers: ensure that the contract clearly defines each section’s completion date, LD rate, and scope. Do not attempt to take partial possession informally — formalise it through the contractual mechanism to ensure the correct legal consequences follow.

Risks

For contractors: informal partial possession, without contractual agreement on the LD reduction, may not reduce the LD liability as expected. For employers: misidentifying the applicable LD rate for a section, or applying the whole-works LD rate when only one section is late, may create an overpayment position that the contractor disputes.

Mitigation

Define all sections clearly in the contract, with their respective completion dates, LD rates, and scope descriptions. Use the sectional completion schedule to track progress, LD accrual, and retention release independently for each section. Formalise all partial possession events in writing on the day they occur.

Conclusion

Sectional completion and partial possession are powerful mechanisms for managing phased project delivery. They require careful contract drafting, disciplined administration, and clear communication between the parties. The financial and legal consequences of getting the administration wrong are significant — but avoidable with good practice.