Which professional organization historically published a recommended fee schedule based on percentage of construction cost for architectural services before it was deemed anti-competitive?

Architectural firms employ various pricing strategies to charge clients for their services. One common approach has been the percentage fee method, where architects charge a percentage of the total construction cost. This pricing model has evolved over time and varies across different markets, project types, and regions. Test your knowledge about this traditional architectural fee structure that continues to influence the industry's business practices.

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American Institute of Architects (AIA)
Royal Institute of British Architects (RIBA)
International Union of Architects (UIA)
National Council of Architectural Registration Boards (NCARB)