Neither answer above covers all the possibilities. You need legal assistance to save you alot of confusion, time and trouble. it may be as easy as pulling the proper forms off the web site for the district court or registrar of deeds for your county and showing up to file a proof of survivorship along with a copy of the death certificate and your photo ID. If there is a mortgage then all bets are off.

Court

Depends on how title is held. If you held it as 'joint tenants with rights of survivorship' there is nothing that you need to do as it is now yours.

Any other type of ownership including 'tenants in common' requires it to go through probate to change the ownership in accordance with the will of the deceased.

Probate court