NPCA 99a is a form entitled Subterranean Termite Protection Builder's Guarantee. In the United States, builders were once required to fill out the form to specify whether termite control had been performed by the builder or by an outside agency. The form was discontinued in 2002 and replaced by HUD-NPMA-99A.
NPCA 99a also describes the responsibilities of the builder in regard to pest control. It is intended to guarantee that the builder prevented termites from invading the construction supplies used to build the structure in question, and that the builder followed the building code properly. Although it was discontinued, as of 2014, NPCA 99a is still accepted by the federal government until stock of the form runs out. Both NPCA and its successor are issued by the U.S. Department of Housing and Urban Development.