The request to revise the design is a direct result of an error made by the owner's consultant, not the architect or their team. This work falls outside the architect's defined scope of basic services. Standard owner-architect agreements, such as the AIA B101-2017, classify revisions due to information or instructions from the owner or the owner's consultants as an Additional Service. The correct professional and contractual procedure is for the architect to notify the owner of the need for this additional work and submit a request for authorization and compensation before proceeding with the revisions.

A. Issue a change order: A change order is a formal modification to the construction contract during the construction phase, not the architect's design services agreement.

C. Proceed to bidding and make changes in construction: Knowingly issuing incorrect documents for bidding is unprofessional and leads to inaccurate pricing, delays, and more costly changes during construction.

1. AIA Document B101™–2017, Standard Form of Agreement Between Owner and Architect.

Article 4, Additional Services, § 4.2.1: This section lists services that are not included in Basic Services. Revisions due to a change in the owner's instructions or information, which would include flawed information from an owner's consultant, fall under this category.

§ 4.2.2: This clause stipulates that the "Architect shall notify the Owner promptly and explain the circumstances" and "shall not proceed to provide the Additional Service until the Architect receives the Owner’s written authorization." This directly supports submitting a request before proceeding.

2. The American Institute of Architects, The Architect's Handbook of Professional Practice, 15th ed., (Hoboken, NJ: Wiley, 2013).

Chapter 10.2, "Compensation for Architectural Services," p. 718: This chapter explains that when a client requests a change in project scope, "the architect should document the request and secure the client’s agreement to a change in services and compensation before proceeding." This aligns with submitting an additional services request.

3. Demkin, J. A., & American Institute of Architects. (2008). The Architect's Handbook of Professional Practice, 14th ed., (Hoboken, NJ: Wiley).

Chapter 13, "Project Management," Section on "Managing Project Scope," p. 328: This section emphasizes that "When the architect is asked to perform services not included in the original agreement, the project manager should not proceed with those services until the owner agrees in writing to the scope of the additional services and the compensation."