Which additional review is required during the refinement of designs in the DD phase?

During the Design Development (DD) phase, one of the critical aspects is ensuring that the design complies with local regulations, building codes, and zoning laws. Verification with Authorities Having Jurisdiction (AHJ) is essential because these authorities enforce the legal requirements that must be adhered to for the project to proceed.

This review process involves discussions and assessments to ensure the design meets all necessary standards, which may include safety codes, environmental regulations, and accessibility standards. Engaging with AHJs during the refinement of designs helps to identify potential issues early on, thereby preventing potential delays or modifications in later phases of the project.

While comparison with historic structures, assessment of public opinions, and second opinions from independent consultants can be important in various stages of design, they do not hold the same level of regulatory importance during the DD phase as verification with the AHJ. The primary focus of this phase is to finalize the design in a manner that is compliant and ready for construction, making the engagement with authorities a crucial step.