Carl has extensive experience in commercial real estate. He has developed over 3.6 million square feet of office space, over 535 acres of land, built 18 office buildings, 3 apartment complexes and has 5 ground-up developments to his credit. He has a law degree from the University of Colorado, Boulder and is the founder and chairperson of the University of Colorado Real Estate Council.

At Realty Development, Ltd., founder Jeff Sage and his team believe that true success is about more than growing their real estate portfolio; this top-notch group of professionals devotes countless hours each year to charitable causes that benefit diverse populations. From serving meals to the homeless to sponsoring homes for deserving Habitat for Humanity families, Realty Development, Ltd. is committed not just to improving the process of purchasing real estate, but to making America a better place to live. 

Giving back

About Realty Development, Ltd.

Veteran real estate developer Jeff Sage started Realty Development, Ltd. in 2013 after spending nearly 30 years working in all aspect of real estate development. He launched Realty Development, Ltd. to take advantage of undervalued resort properties. The company is poised for phenomenal growth in 2016. Today, Mr. Sage and his experienced team of real estate professionals have developed a robust portfolio for clients nationwide. The company also gives back to the communities in which it does business through a wide range of philanthropic endeavors. 

Carl Luppens - Senior Project Development Director


Jeff has extensive experience in real estate development cost control. He has developed over 600,000 square feet of multifamily, 100,000 of commercial, and 1 million square feet of residential, 1,000 acres of land, and has over 50 ground up developments experience.  He had a master’s in real estate development and construction management from Denver University. 

Jeff Sage - Managing Director

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