What Is an ASI as an Architect's Term?

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Architects reviewing drawing plans.
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An architect's supplemental instruction -- more commonly referred to as an ASI -- is similar to a contract addendum. Just as a contract addendum allows you to provide additional information or make small changes in a contract without entirely rewriting it, an ASI allows an architect to provide additional instructions or make minor changes without having to rework the entire construction plan.

Definition and Usage

An ASI is a document authorized for use by the American Institute of Architects under paragraph 7.4 of A201-1997. An architect can only use this form to resolve informational issues or make minor changes that do not affect a construction project's budget or alter the construction timeline. For example, the architect might realize that a drawing or photograph will make the instructions clearer, or might wish to provide more detail in an existing specification. However, use of an ASI would not be the appropriate way to include new specifications that alter the plan in any way.


Jackie Lohrey

Based in Green Bay, Wisc., Jackie Lohrey has been writing professionally since 2009. In addition to writing web content and training manuals for small business clients and nonprofit organizations, including ERA Realtors and the Bay Area Humane Society, Lohrey also works as a finance data analyst for a global business outsourcing company.