The American Institute of Architects reported the March ABI score was 51.9, up from the mark of 50.3 in the previous month. This score reflects an increase in design services (any score above 50 indicates an increase in billings). The new projects inquiry index was 58.1, down from a reading of 59.5 the previous month.

The Architecture Billings Index reflects consecutive months of increasing demand for design activity at architecture firms. As a leading economic indicator of construction activity, the ABI reflects the approximate nine- to 12-month lead time between architecture billings and construction spending.

“The first quarter was somewhat disappointing in terms of the growth of design activity but fortunately expanded a bit entering the traditionally busy spring season. The Midwest is lagging behind the other regions, but otherwise business conditions are generally healthy across the country,” said AIA Chief Economist Kermit Baker. “As the institutional market has cooled somewhat after a surge in design activity a year ago, the multifamily sector is re-accelerating at a healthy pace.”

Key March ABI highlights:

• Regional averages: South (52.4), Northeast (51.0), West (50.4), Midwest (49.8).
• Sector index breakdown: multifamily (55.7), commercial / industrial (51.8), mixed practice (50.0), institutional (48.0).
• Project inquiries index: 58.1.
• Design contracts index: 51.8.