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    ABI tumbles as architectural billings soften further

    Written by Laura Miller


    The AIA/Deltek Architecture Billings Index (ABI) tumbled in January, as business softened further at architectural firms across the US.

    Since October 2022, the ABI, a 9- to 12-month leading indicator for nonresidential construction, has been below 50, indicating contraction in billings.

    Laura Miller

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