Latest News 11/15/2005: M. R. Development Announces development of Sublett Square at the Corner of HWY-287 and Sublett Rd. Contact Us 100 North Mitchell Rd. Mansfield, TX 75063 Office: (817) 477-0797 Fax: (817) 473-4686 info@mrdevelopment.net What We Do With bankers, investors, builders and governments as our partners, we develop the land that becomes home for Texas families and businesses. Download our Brochure for more information.