Construction management: occupation and defects liability period
The occupation and defects liability period takes place after the client has taken possession of the development for occupation. During this stage, any defects are rectified and the final certificate is issued signifying that the construction works have been fully completed. As the development is now occupied, and the construction manager no longer has possession of the site, close co-operation is required between the construction manager and the client so as so not to disturb occupants, whose activities will take priority over trade contractors rectifying defects.
[edit] Starting the work stage.
The construction manager arranges a start-up meeting to plan the work stage.
On construction management contracts, a separate certificate of practical completion is issued for each trade contract. This means that defects liability periods may be at different times for each trade contract and as a consequence, the construction manager may continue to hold construction progress meetings and issue construction progress reports for continuing trade contracts and may have to protect completed work from continuing work.
[edit] Rectifying defects.
If the contract allows, the construction manager may review all relevant events that might be considered to have affected the completion date for each trade contract and may adjust their completion dates accordingly.
The client reports any defects in the works to the construction manager. On large projects the construction manager may set up a hot desk for responding to any complaints or to provide assistance required by the incoming occupants. The construction manager takes advice on the action necessary to rectify the defects from the consultant team, and the construction manager and client agree a programme for rectifying defects in a way that minimises disruption to the client.
If rectification works are significant, it may be necessary for the client to re-appoint the principal designer (whose appointment may have terminated on certification of project completion) and it may be necessary to amend the health and safety file.
At the end of the defects liability period for each trade contract, the construction manager arranges inspections of the works and prepares a schedule of defects which is issued to the trade contractor. The construction manager agrees the programme for rectification of items on the schedule of defects with the client and trade contractors, which should in any event be rectified within a reasonable time.
The trade contractor rectifies items listed on the schedules of defects, informs the construction manager and provides the construction manager with information for the preparation of the final account. The trade contractor and construction manager agree the final account for the trade contract.
The construction manager arranges final inspections of the trade contractors works and if satisfied issues a final statement (payment notice) for that trade contract. If the client intends to pay a different amount from that shown on the statement, then construction manager must issue a pay less notice giving the basis for the calculation of the amount they intend to pay. The client makes payment by the final date for payment. This may include the release of any remaining retention if applicable.
The construction manager completes the building owner's manual.
If a site waste management plan has been prepared, the construction manager may reconcile the planned handling of waste against what actually happened and provide an explanation of any differences.
[edit] Issuing the final certificate.
Once final statements have been issued for each trade contract, the construction manager co-ordinates preparation of the final report and issues the final certificate for the project.
Issuing the final certificate will normally signify the end of the construction manager's and consultant team's appointments. If post-occupancy evaluation services are required, these may involve a new appointment.
Featured articles and news
Future Homes Standard Essentials launched
Future Homes Hub launches new campaign to help the homebuilding sector prepare for the implementation of new building standards.
Building Safety recap February, 2026
Our regular run-down of key building safety related events of the month.
Planning reform: draft NPPF and industry responses.
Last chance to comment on proposed changes to the NPPF.
A Regency palace of colour and sensation. Book review.
Delayed, derailed and devalued
How the UK’s planning crisis is undermining British manufacturing.
How much does it cost to build a house?
A brief run down of key considerations from a London based practice.
The need for a National construction careers campaign
Highlighted by CIOB to cut unemployment, reduce skills gap and deliver on housing and infrastructure ambitions.
AI-Driven automation; reducing time, enhancing compliance
Sustainability; not just compliance but rethinking design, material selection, and the supply chains to support them.
Climate Resilience and Adaptation In the Built Environment
New CIOB Technical Information Sheet by Colin Booth, Professor of Smart and Sustainable Infrastructure.
Turning Enquiries into Profitable Construction Projects
Founder of Develop Coaching and author of Building Your Future; Greg Wilkes shares his insights.
IHBC Signpost: Poetry from concrete
Scotland’s fascinating historic concrete and brutalist architecture with the Engine Shed.
Demonstrating that apprenticeships work for business, people and Scotland’s economy.
Scottish parents prioritise construction and apprenticeships
CIOB data released for Scottish Apprenticeship Week shows construction as top potential career path.
From a Green to a White Paper and the proposal of a General Safety Requirement for construction products.
Creativity, conservation and craft at Barley Studio. Book review.
The challenge as PFI agreements come to an end
How construction deals with inherited assets built under long-term contracts.
Skills plan for engineering and building services
Comprehensive industry report highlights persistent skills challenges across the sector.
Choosing the right design team for a D&B Contract
An architect explains the nature and needs of working within this common procurement route.
Statement from the Interim Chief Construction Advisor
Thouria Istephan; Architect and inquiry panel member outlines ongoing work, priorities and next steps.



























