Key Development Center 2060 Grand River Annex, Suite 600, Brighton MI 48114 Website: www.keycenters.org Key Development Center, Inc. is a 501(c)3 nonprofit, CARF accredited, licensed substance abuse prevention and treatment provider with over 15 years’ experience in the Livingston County area. KDC offers a wide range of substance abuse services, including prevention, education, outpatient treatment and co-occurring treatment, screening, assessment, referral and follow-up. For further information, call  810-220-8192. Locator Map & Directions