About

The Green Building XML schema, or "gbXML", was developed to facilitate the transfer of building information stored in CAD-based building information models, enabling interoperability between disparate building design and engineering analysis software tools. This is all in the name of helping architects, engineers, and energy modelers to design more energy efficient buildings.

Today, gbXML has the industry support and wide adoption by leading Building Information Modeling (BIM) vendors including Autodesk, Trimble, Graphisoft, and Bentley. With the development of export and import capabilities in over 40 engineering and analysis modeling tools, gbXML has become a defacto industry standard schema. Its use dramatically streamlines the transfer of building information to and from architectural and engineering models, eliminating the need for time consuming plan take-offs. This removes a significant cost barrier to designing sustainable and energy efficient buildings. It enables building design teams to truly collaborate and realize the potential benefits of Building Information Modeling.

In June of 2000, the gbXML schema was submitted by a company called Green Building Studio for inclusion in aecXML(TM), the industry-led initiative launched by Bentley Systems. Shortly thereafter, gbXML became the draft schema for the Building Performance & Analysis Working Group.

In 2009, gbXML was spun off from Green Building Studio to become a stand-alone entity and things really took off then: funding was secured, the schema was drastically improved, a new website was launched, and a community of thousands of architects, engineers, and energy modelers attended live webinars explaining the benefits of gbXML. Today, gbXML is funded by organizations such as the U.S. Department of Energy, the National Renewable Energy Lab (NREL), Autodesk, Bentley Systems, and others. Click here to view a detailed timeline of the history of gbXML.

Click here to go to our gbXML resources page where you can view videos and other documents that explain and demonstrate usage of gbXML.

You can also go to our community forum and knowledge base here.

The technology behind gbXML

XML, extensible markup language, is a type of computer language that allows software programs to communicate information with little to no human interaction. This approach allows building designers to focus on what they want to do most - design beautiful, environmentally responsible buildings that use intelligent technologies to meet their client's needs at the lowest cost possible. Helping realize the promise of Building Information Modeling, gbXML allows intelligent solutions for the design, certification, operation, maintenance, and recycling of buildings. The possibilities are limited only by the collective imagination of the building design community.

If you have an application that is used by the building industry and are interested in making your customers' tasks easier -- look into gbXML today.