What do I have to do to put my sons name on the deed to my house

You have to prepare a deed from yourself, as seller, to yourself and your son, as buyers. Then you have to have the deed recorded in the county clerk or county register's office.

I strongly suggest that you have an attorney handle this for you. It should not cost more than $100-$200 and this way you can make sure that it is done properly.

It may not be necessary to to "sell" the property to yourself and your son. I would contact your local county clerk's office and ask them what the procedure is. If you do have to prepare a new deed, then I agree with consulting an attorney.

Another issue here is whether you have a mortgage or not. If you do, then you will probably need to get permission from the lien holder (the mortgage company) to do this.

In some states you might have to deed the property to another (straw) party. Then the straw party would deed the property back to you and your son, probably as Joint Tenants With Right of Survivorship. Check with your county recorder. Be sure that the straw party has no tax liens or judgments, as they could attach to the property in that brief instant that they held title. Also be sure that your son is financially stable. If he has bad finances, that could jeopardize your retirement nest. Check to see if your state offers a Beneficiary Deed. With that instrument, your son would not be on title, but at the time of your death, the property would automatically convey to him.