When you sign B101 with an owner, you make specific commitments: a defined standard of care, project timelines, indemnification obligations, and dispute resolution procedures. What happens to those commitments when you bring subconsultants onto the project?

C401's flow-down provisions answer that question. Section 1.3 of C401 states that the consultant assumes toward the architect all the obligations and responsibilities that the architect assumes toward the owner under the prime agreement, to the extent those provisions apply to the consultant's portion of the project. In return, the architect receives the same rights, remedies, and redress against the consultant that the owner has against the architect.

Four categories of provisions typically flow down: standard of care, payment terms, indemnity obligations, and dispute resolution rights. Each must be coordinated between the prime agreement and the subconsultant agreement to avoid gaps that leave the architect exposed.

This coordination matters because gaps are common. If B101 requires you to maintain insurance for two years after substantial completion but your C401 only requires the consultant to maintain insurance for one year, you have a 12-month gap where a subconsultant's error could surface without their insurance backing your claim.

The flow-down mechanism also contains a built-in conflict resolution rule: where C401's own provisions are inconsistent with the prime agreement, C401 governs. This protects both parties from the unintended consequences of flowing down terms that weren't designed for the architect-consultant relationship.

Understanding flow-down provisions is tested on the PjM exam because they sit at the intersection of contract management and risk management. Getting them right protects the firm. Getting them wrong creates liability gaps that standard professional liability insurance may not cover.