457. Duties as a certifier.

In most building contracts the architect has to perform a number of duties as a certifier as well as acting on behalf of the employer. His duties as certifier are different from that of an arbitrator1.

The most obvious example of the architect's acting as a certifier is when he issues a certificate which records the value of the work executed2. The architect is also acting as a certifier when he has to value variations3 or grant an extension of time4 or certify the date by which the work should have been completed5.

Whilst acting as a certifier the architect must