Residential & Commercial Electricians specialists.Providing Industrial Electrician Services, Commercial Electrician Services and Residential Electrician Services to the York, Lancaster, Harrisburg, Dauphin, Chambersburg, Carlisle, Mechanicsburg, Camp Hill, Hershey, and Hanover areas.Welcome to Cornerstone Electrical Contractors, LLC. Residential & commercial electricians in PA, Residential & commercial Security Systems in PA. We are security/electrical contractors in PA providing service to surrounding counties, which include York, Lancaster, Dauphin, Adams and Cumberland. We would like the opportunity to be of service to you, a friend or your company. We offer very competitive rates and our quality of service is top notch. We are committed to getting new business and keeping current business.We come to your job site to evaluate and give you a free no obligation estimate. We do not give any estimates over the telephone; we come and look at your job personally to explain the work to you, so that you understand the services we provide. Cornerstone Security and Electrical, LLC. Are members of the York County Chamber of Commerce and a member of ERN since 2008. We have several references on file readily available for your informational purposes. Should you or someone you know need our professional security or electrical services please contact Cornerstone Electrical Contractors LLC. Thank you for your time, we at Cornerstone Electrical Contractors, LLC. Look forward to working with you, a friend or your company in the near future.Specialties: , 24-hour emergency service, CCTV (surveillance cameras), electrical service change outs and repairs and more.