Roberts McMahon spent her childhood on job sites or in the office learning the nuts and bolts of general contracting from her father, Lyle Roberts.  Lyle Roberts, Inc. was the leader in custom residential and commercial construction in South Florida for over 45 years.  She witnessed the making of long-term client and sub-contractor relationships built on service, respect, and quality workmanship that have become her hallmarks as well.

She graduated from the University of Miami with a BA in Fine Arts and applied her design training and construction background as a design assistant at Richard Plumer Interior Design. She joined Spillis Candela & Partners and became a project manager of the James L. Knight Center among other projects. In 1983, Roberts McMahon founded The Design Team, Inc.
 
In 1996, her passion for architecture led Peggy back to the classroom.  She graduated at the top of her class with a Master of Architecture degree from the University of Miami, while raising three children. Her awards include the AIA's Henry Adams Certificate of Merit for general excellence in Architecture and First Place in the CSI Specifications Competition. 

She interned with Arquitectonica as a senior designer of the Golden Moon Casino, Philadelphia, Ms. and project manager of its Preview Center.  She interned with Hochstim Krantz Architects on renovations of residential and commercial buildings in Coral Gables and Coconut Grove.  She maintains an active interest in historic preservation and sustainable design.