CORE Real Estate Team broker by eXp Realty. You're one stop shop for many things real estate. Owner Joel McDowell has been heavily involved in real estate finance, investment, design, development and brokerage since moving to Sioux Falls in 1991. Utilizing resources is the key to CORE Companies’ success. Its affiliation with the REALTOR Association of the Sioux Empire, National Association of REALTORS, Home Builders Association of the Sioux Empire, National Association of Home Builders keeps CORE Companies on the cutting edge in the real estate industry. Contact us if you are looking to buy, sell, design, build, add, renovate, develop or invest in real estate. When it comes to real estate we have LOTS to offer.