My building is up for sale (duplex) and my landlord want to change my door lock to a master lock yet he is not asking the same of my neighbor? I find this suspicious. One of the owners lives in the unit, they're saying they can do as they see fit in order to sell the building but they are not justifying why my locks in particular need to be changed? I don't trust these people, they've have not honored our verbal agreements in the past, I've lived there close to 13 years already. The lock are fine and they do not need to be replaced and I told them I'm not granting permission, now they are telling me that I've been informed and they will change them anyway? Please help, we are a family of 4, I have a toddler and I fear they are trying to set me up for whom ever buys it to kick me out..