Will my thirty-year-old son have to pay taxes on my home if I quitclaim him to the title? What if he just owns one-half of the home; how will that affect his taxes? We live in Boise, Idaho and he already owns two homes that he is buying in his name.
You're talking about gifting your home to your son. That will actually mean that you need to pay taxes, unless the value of your home is below the exemption for the gift tax. You will, probably, use the lifetime exemption, but it will come out of the exemption for your estate.
Once your son is the owner, he'll be liable for the property taxes. If your wife continues living there - she'll probably have to pay rent.
Another issue is that your basis in the home will pass to your son. If you were to give it to your son in your will, your son would have gotten stepped up basis.
I suggest you talk to an estate attorney and form a trust that will allow you executing your plan with less adverse effects.