Landlord/Property Manager sign on front of property

[David S.]

I remember reading somewhere that it was a state of Massachusetts requirement for the property manager of a rental building to post their property management company name (or landlord's name if he/she also manages the building) and phone # on a sign outside the front door of a rental building. Is this true? If so, can anyone provide a link for more details? Also, if it is a requirement, any suggestions of where/how to get the sign made?

Thanks, 

David