No, only the person whose name is on the title have to sign it. So if your dads name is on the title he is the one who has to sign it.
If your names BOTH appear on the title - yes - you will both have to sign.
It may depend on what state you are in, but normally, if the title reads John Smith AND Jane Smith, both parties have to sign. If the title reads John Smith OR Jane Smith, either party can sign.
From what I've read (I have the same situation) if there is an "AND/OR" on the title, only one needs to sign. If there is no "and/or" both need to sign.
Absolutely
every Vendor that is on the title for the property has to sign, if they do not sign the authority is not legal
Not in NY state. Others may be different. Check at your DMV.
It depends on how the title is worded. If both names are on it as "or", for example, john smith or jean smith, you do not have to have his signature to sell it. If it is john smith "and" jean smith, both are required to sign it in order to sell it.
you can be prosecuted for forgery or worse attempted theft
If the names are joined with "OR" or "AND/OR", either can go to the DMV and have the title changed. If there is just an "AND", they will both have to sign.
for example is the title is signed Julie and Tim than both people have to sign the title, but if the title is signed Julie or Tim than only one has to sign the title.
get in touch with your neighbors brother and find out who the executor of estate was/is for his sister. That person can sign the title over to you and give you a copy that shows they are the executor of estate for her.
You need to have your brother sign a quitclaim deed conveying his interest to you. Then you must record that deed in the land records. He owns an interest in the property and you need to obtain that interest from him.