Normally, the implementation stage starts with the detailed design. Consequently, GVA considers design robustness, builds flexibility into design where needed, informs the project brief and acts as the client’s representative in project meetings as needed. GVA also considers suited build and maintenance contracts to ensure clarity of responsibility.

GVA also reviews the implementation risks in planning, supply chain, constructability and post completion maintenance. GVA also evaluates the extent of equipment warranties and checks if they include potential unexpected interactions between them. In addition, GVA assesses claims and ensures contract allows for sufficient defects liability period and budgets for potential scope for omitted works.

GVA also focuses on managing disruption. More explicitly, GVA assesses the level of acceptable disruption, investigates implementation scenarios to find optimum solutions. GVA also drafts a logistics plan that includes impact on existing occupants, move management requirements and handover procedures. GVA ensures occupier information is explained at an appropriate time with opportunity for Q&A.

For the effective delivery of projects, GVA maintains relationships with vendors and suppliers of equipment and services as well as with Energy Services Companies (ESCos) that guarantee the energy savings accepting a certain level of financial risk by connecting payment either in whole or at least in part with the achievement of their efficiency improvement measures.