North Carolina Administrative Code Title 17 — Revenue
17 NCAC 07B .4110 — Blueprints Sold By Architects
Architects are liable for sales tax on blueprints or plans when they reproduce plans or drawings and sell them. No tax is due when plans and specifications are instruments of service and title thereto remains with the architects. SECTION .4200 - SALES TO THE UNITED STATES GOVERNMENT OR AGENCIES THEREOF
Source: official text