A new AARST/ANSI Standard,"RRNC 2.0, Reducing Radon in New Construction of 1 & 2 Family Dwellings and Townhouses," provides a "Model Code" for the installation and testing of new construction radon systems, further reducing radon risk in new homes.

The American Association of Radon Scientists an Technologists recognized MDC Holdings and Richmond American Homes as a leader in the effort to increase radon awareness and to decrease radon health risks.