I inherited my mother's house after her death. I am the administrator and her only child/ heir.How do I go about transferring title/ ownership to me.

You need to ensure that the estate has been administered properly before you transfer the house to yourself, including paying all debts. If the house has no mortgage or other loan associated with it, you should then be able to prepare an Administrator's Deed to transfer the house to yourself, as the heir/beneficiary of the estate. Please note: you should NOT use a quit claim deed, a warranty deed, or a limited warranty deed, as none of these are appropriate for a transfer from an estate to a beneficiary. I very strongly recommend that you get either an experienced probate attorney or a real estate attorney who has a lot of probate-related experience to help you prepare and file the correct deed. If the house is subject to a mortgage, credit line, or other debt, you will need to have the administrator's deed note the existence of any security deeds that secure the loans. You will then also need to get all of those loans paid off in full. You may have to do a refinance of the existing debt if you are not already a borrower of the existing loan. That is a very tricky process and you may have to talk to more than one potential lender to find someone who will take the trouble to understand the situation and help you get the refinance done. It's not the same as a normal refinance. Best wishes to you.