Try talking to the landlord to see if you can give him the rent and see if you can have the lock key?? :) It's worth trying.
can a landlord change the locks on a commercial building without notice
You need to check with the landlord about that. You cant just change the locks on a property that you do not own.
No. Unless they gave you a new key.
You do have some legal rights when renting a house. The house should be clean and liveable, the landlord should tell you when he is coming over to fix the house, the landlord cannot have the locks changed.
A landlord could get in trouble with the husband for changing the locks, but that seems unlikely, especially with a letter from the wife asking that they be changed. There is also no reason why the wife cannot change the locks herself.
This will depend on your state law: in some states the landlord is allowed to keep your property; in others they must put it in storage; while in others they must put it on the curbside
Not necessarily. A landlord must have locks installed which must secure your rental dwelling. They don't have to be deadbolt.
I need to have the locks changed at my office. How can I find a business locksmith who can work around my schedule?
No, a landlord cannot change the locks for abandonment if the tenant has not moved out of the rental property. Changing locks without proper legal process could be considered an illegal eviction and may expose the landlord to legal consequences.
If your boyfriend has changed the locks on you and you were living together and your clothing or anything else you own is still inside then you can either get the police to escort you to your boyfriends and retrieve your belongings or, get a male member of the family to escort you (preferably someone older.) It is illegal for your boyfriend not to give you anything that is yours. If you weren't living together and he has changed the locks that is a clear sign that you are bothering him and he no longer wants you inside the premises.
I can only answer for Massachusetts, but I think you can. The landlord has a right of entry, but he should get the permission of tenant, and the tenant has a right to be there at the time. If the landlord needs to get in during an emergency, perhaps he should be calling the police.
If the space is being leased and the tenant is current they really have no business doing so. They have the right to, but as long as they give the tenant a copy of the key they can do what they want. It is their property.