Why design checking in periods between tender return and signing contracts is required?

Some clients have seen the wisdom of introducing a design-checking period between the appointments of a preferred contractor and signing the construction contract. This can be particularly useful for single-stage tender actions, where the project is complicated or involves a lot of design coordination. This allows the contractor a set period after being named the preferred contractor to review all the documentation, to either clarify their tender sum or suggest any adjustments. Some see this as giving contractors another attempt at their tender submission; some see it as a useful exercise to ensure that the tenderers have picked up anything they missed before they start building, rather than once they are on site. As this allows the preferred contractor a greater understanding of the project and coordination, it therefore allows a greater degree of risk transfer to the contractor. The advantages of this process are that it provides the competitiveness of a single-stage tender but also gives the contractor the benefit of a two-stage process by allowing them to review with the team (in the position of preferred contractor).

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