HB 1450 -- Retainage on Public Contracts Co-Sponsors: Marble, Hickey This bill applies to public contracts and requires that in cases where retainage exceeds 5% of the value of a contract that written notification be given defining the specific reason why the excess retainage is needed. This notification must be signed by the owner and the architect or engineer and delivered by certified mail to the general contractor no less than 14 days following the public bid opening.Copyright (c) Missouri House of Representatives