Sapphire Develop Nashville 41 Peabody St, Nashville TN 37210 Tennessee Nashville-Davidson (balance) 37210 615-206-4166 contact@sapphiredevelop.com Sapphire Real Estate Developers Sapphire Development Group is a real estate investment and development firm, serving neighborhoods in Tennessee. Sapphire Development Group began in remodeling, finding success in transforming houses and selling them quickly.