The American Institute of Architects (AIA) Economics & Market Research Group’s Architecture Billings Index (ABI) decreased 3.3 points to 43.8 in January and remained below 50, marking 15 straight months of industry contraction. All regions and sectors reported billings below 50, except the South, which had a score of 50.2. Inquiries slipped below 50 for the first time since April 2025, signaling weakening demand for future work. An ABI score above 50 indicates growth. See AIA
