How do i contact construction specialties? Contact Construction Specialties by phone at 1-800-233-8493 or via our online form. You can also use our online representative locator to find a sales representative near you.Why choose constructionconstruction specialties? Construction Specialties is a residential remodeling company based in Lawrence, Kansas. We specialize in one-call home improvement solutions and pride ourselves on providing convenient and high quality solutions to all home improvement needs. We have a broad range of experience in remodeling, new construction, ADA improvements and insurance claims.Where can i find contact information for c s group? All other offices and worldwide representation, including contact names, addresses, phone, fax and e-mail can be found by visiting our corporate website at: www.c-sgroup.com