A formal request for alteration made by the contractor is known as what?

A formal request for alteration made by the contractor is known as a Change Order. This is a crucial aspect of contract management in construction and engineering projects. A Change Order is a written document that specifies changes to the original construction plans or scope of work agreed upon in a contract. This can encompass modifications in the design, adjustments to the project schedule, or changes in material or labor.

The necessity for a Change Order arises when unforeseen circumstances emerge, or when a client requests additional work that was not included in the original contract. These changes must be documented properly through a Change Order to ensure that all parties agree to the new terms and that the adjustments are reflected in project timelines and budgets.

The other terms provided refer to different aspects of project management or contract modifications but do not specifically denote a formal request for alteration. A supplement may refer to additional documentation or information, a weather claim usually pertains to delays or extra costs caused by inclement weather, and a service order typically relates to requests for services rather than changes in construction contracts. Hence, Change Order is the precise terminology used to denote formal modifications to the contract.