AD Perantie, LLC is a woman-owned engineering firm founded in 2014 by Kathy Perantie, PE. We provide structural engineering services for new projects, expansions, renovations, and facelifts. We also perform structural and forensic analysis of existing buildings. Kathy has over 23 years of experience on hundreds of projects across the country and in a wide variety of building types. Leadership: Kathy Perantie, PE – President Experience: Civic Midrise Concrete & Steel Corporate Office Healthcare & MOB Hospitality Education Worship Retail Entertainment Restaurants Industrial Multi-Tenant Residential