Dive summary:

• Builders who are creating housing communities that cater to adults who want to get out and do things often are getting advice not to market their projects as being for a label that their potential customers may wear as a badge of honor – "active adults."
• It appears that both parts of the phrase may run afoul of federal fair-housing laws, including the Housing for Older Persons Act (HOPA), which says terms such as ‘‘adult living” and ‘‘adult community’’  are " “not consistent with the intent that the housing facility or community intends to operate as housing for persons 55 years of age or older.”
• The advice is to say communities are for people "55 and older," although the logic of it all may be a bit impenetrable.

From the article:

"It’s always a risk management decision for management companies and owners … but why advertise ‘so sue me’?” These are the words of wisdom from D.J. Ryan, fair housing Specialist from Kimball, Tirey & St. John LLP. ...