BACnet has been under active development since June of 1987 when the first meeting of Standard Project Committee 135P (SPC 135P) took place at the ASHRAE Annual Meeting in Nashville, Tennessee. The "P" in "135P" meant that the standard was in the process of being "proposed." Who would have thought that it would take eight-and-a-half years to complete? Of course, there was a large body of skeptics who maintained that it could NEVER be done...

Finally, in 1995, ANSI/ASHRAE Standard 135 was published and BACnet was officially born! The next year ASHRAE Standing Standard Project Committee 135 (SSPC 135) was formed to interpret, maintain and extend the standard. In 2003, BACnet achieved the status of an International Organization for Standardization standard (ISO 16484-5). The same year, BACnet's companion standard, ANSI/ASHRAE Standard 135.1, Method of Test for Conformance to BACnet, was published in the United States and sooned joined the BACnet protocol itself internationally as ISO 16484-6. Consolidated versions of both BACnet standards, including all errata and addenda, have been published every few years ever since and today BACnet is in use in hundreds of thousands of installations around the world.

This website has been in continuous existence since 1998. After looking at the latest news on the homepage, have a look at the News Archive, the extensive Bibliography with educational and historical articles dating back to the "beginning," or check out information on the various BACnet Interest Groups around the world, Developer Help, or Website Links to other resources. If you have any suggestions for improving the site, please feel free to contact the Webmaster via the Feedback link. Thanks for visiting!