Our Team


William J. Sattler

Over the course of his professional career, Bill has had the opportunity to combine an aptitude for real estate with a long-standing passion for design and construction. He has engaged himself in every aspect of the industry -with experience that runs the gamut from Union iron worker to architectural designer. For the past eight years, Bill has worked as a licensed real estate broker with Gateway Realty and an architectural designer for one of Chicago's largest design build firms. Bill prides himself in a listen first approach to design. As an architectural designer, Bill was responsible for designing, drawing, costing, and developing residential remodeling and addition projects.

Working as project coordinator for Poter Construction and Development during the early to mid 2000's Bill gained valuable insight into the highs and lows of the residential development world.

His responsibilities included site analysis, zoning approvals, contractor approvals, and project management. Bill witnessed firsthand the construction methods implemented during the housing boom by Poter's competitors and is well suited to cure some of the conditions ailing new construction homes of this era. 

Bill is passionate about design and has many interests including Chicago architecture, sports, and working with his hands. He is a native of Chicago and graduated from Miami University in Oxford, OH with Bachelors of Arts degrees in Urban Planning and Geography, with minors in Political Science and Human Resource Management.


Joel R. Heilman

A graduate of  Miami University in Oxford, OH with a degree in Business Management, comes to Realty Design Group after a 10 year tenure in the consulting world.  As such, he has a fresh perspective to Business Development, Project Management and Day to Day Operations.  

Having been raised in a family that spent most weekends working on home improvement projects, followed by numerous seasonal jobs working in various aspects of the construction industry, Joel returns to his passion by fully immersing himself in the real estate and design- build world.

Growing up and currently residing in Northwest Suburban Palatine, Joel has a unique connection to the area.  His passion for his community are evident through his focus in furthering Realty Design Group's presence in the ever evolving suburban real estate and remodeling market.

Joel prides himself in taking a full service approach to real estate, design and building. The cornerstone of his approach is to put the customer first and produce quality work through the entire real estate and remodel process.


With a background in construction and property management, David brings an integrated approach to the design, planning, and delivery of the remodeling process.

Growing up in Des Moines, IA, his dad - a flooring installer and small-business owner - taught him the value of hard work, integrity, and taking pride in what you do. This has been the foundation of his success throughout his career, and is the approach he takes with every RDG build.  

Throughout his career, David has managed residential and commercial construction projects in Silicon Valley, the Midwest, and Canada. He is passionate about working with customers to make informed decisions throughout their home remodel projects.

David graduated from Upper Iowa University with a Bachelor's of Science in Business Administration.  He currently lives in Arlington Heights with his wife and three daughters. His interests include doing projects around the house, being outdoors, and spending time with his family.

David Miller