This week I moved into my new home, the realtor suggested that I get the locks changed since they did not have the spare keys, I called Markham Lock and Safe and scheduled an appointment. The technician came actually a little early and got right to work inspecting my locks he suggested that i get them re keyed since they were pretty new and in good shape. He re keyed the locks for me and gave me the new keys he was done in a bout a hour and a half and the re key service cost 1/3 the amount of changing all my locks. I am so glad he suggested it and did not try to just make a quick buck. Thank You so much!