Via the National Association for Home Builders:

Graduate Master Builder

The ultimate symbol of the home building professional, the Graduate Master Builder (GMB) designation is for veteran builders. The courses required for the GMB provide advanced knowledge of the building business, covering topics such as risk management, land acquisition and financial management.

Certified Graduate Remodeler

Certified Graduate Remodeler is an exclusive professional designation designed to emphasize business management skills as the key to a professional remodeling operation.

Certified Aging-in-Place Specialist

If you’re like the majority of Americans over the age of 45, you want to continue living in a familiar environment throughout your maturing years. According to AARP, older home owners overwhelmingly prefer to age-in-place, which means living in your home safely, independently and comfortably, regardless of age or ability level.

Certified Green Professional

The Certified Green Professional™ designation recognizes builders, remodelers and other industry professionals who incorporate green building principles into homes— without driving up the cost of construction. Classwork leading to the designation provides a solid background in green building methods, as well as the tools to reach consumers, from the organization leading the charge to provide market-driven green building solutions to the home building industry.