We use Goffstown Lock and Key for all our multi-family rental properties. Harvey (the owner) put in electronic key pads which are so easy to use. It makes life a lot easier only having to write down codes. We use him in emergencies when a tenant needs their lock changed. He has quick and reliable service. He does our home locks too! Once we even called him to help us get my grandson out of the locked bathroom!! Thanks Harvey. We highly recommend Goffstown Lock and Key.