About Us At Great Valley Lockshop Inc, we provide local locksmith services to businesses and homeowners in the Philadelphia, Pennsylvania region. Our commercial locksmith services provide security and access control solutions for companies of any size, from small mom and pop stores to global enterprises. Our residential locksmith services range from changing locks and deadbolt installation to lock repair and key duplication services. Additionally, we offer a 24 hour locksmith services to those with emergencies after normal business hours. Our lockshop is open Monday through Friday, from 8 AM to 5 PM and offers our customers an extensive variety of quality locks, doors, architectural hardware and supplies. Great Valley Lockshop Inc endeavors to be the best in our business and we think it shows. Our factory-trained personnel provide exemplary installation and customer service. We take pride in our integrity, fast service, and fair rates. We credit our continued success to our high standard of quality, technical expertise and treating customers as family, not just another number.