Although stucco has been in use for centuries, standards regarding its design and application were not developed until the early part of the twentieth century. Over time, these standards have been modified in response to changing needs, developments, and expectations within the industry. Revisions to stucco-related ASTM standards have accelerated over the past ten years in particular, changing the standards drastically. This paper will summarize the most significant of these changes and discuss the genesis and reasons for them. It will also examine areas of future progress on the standards anticipated over the coming decade.