Who is typically responsible for updating the progress schedule?

• A. Owner in coordination with Architect and Contractor.
• B. Architect alone.
• C. Contractor in coordination with Architect and Owner.
• D. Subcontractors alone.

Answer: (C)

Maintaining the construction progress schedule is about who manages the work flow and keeps the timeline accurate as the project evolves. The contractor is the party responsible for the actual construction, so they are best positioned to prepare and continually update the progress schedule to reflect current progress, revised sequences, and the impact of changes. This update needs input from the design and ownership perspectives, which is why coordination with the architect and owner is required. The architect reviews changes for design and constructability, while the owner can authorize decisions that affect timing, and both need to see how those decisions influence the schedule.

The architect alone wouldn’t have the ongoing visibility of field progress and sequencing, and subcontractors alone don’t control the overall project timeline. So the update responsibility sits with the contractor, in coordination with the architect and owner, to keep the schedule accurate and aligned with design decisions and approvals.