What’s the Best Way to Control Millwork Costs in Commercial Interior Projects?

I’m currently involved in a commercial interior build-out where a significant portion of the budget is tied to custom millwork reception desks, wall paneling, built-in storage, and decorative wood features. The challenge I’m facing is keeping costs predictable while still maintaining the design intent and finish quality the client expects.I’ve noticed that millwork packages can vary widely depending on detailing level, material selections, and fabrication complexity. Recently, someone suggested reviewing millwork scope through specialized millwork estimating services in USA to better understand quantities, fabrication requirements, and installation factors before final approvals.For those who’ve handled similar commercial interiors, what methods or controls have helped you keep millwork budgets accurate without compromising design? Any advice on planning, documentation, or coordination with fabricators would be greatly appreciated.