Complete and submit Construction Manager as Constructor Compensation Proposal (Attachment G) hereinafter referred to as the "Cost Proposal". Plus, it includes online signatures for faster sign-off.All of our templates are completely customizable to suit your company, your brand, and your projects. In this blog, we will teach you how to write an effective construction proposal that stands out from the competition. All forms that require a signature or initials must bear an original initial or signature. 2.6 Acceptance of Proposals. Invitation for Bids. Conditional proposals will not be accepted.