The American Institute of Architects (AIA) Economics & Market Research Group’s Architecture Billings Index (ABI) decreased 2.3 points to 45.3 in November 2025, and design contracts fell 4.4 points from October to 42.7, marking 13 straight months of industry contraction. All regions reported billings below 50, except the Midwest, which had a score of 52.3. Billings were below 50 in all sectors, while inquiries were just above 50 in November. An ABI score above 50 indicates growth. See AIA
