Estate Law Questions? Ask an Estate Lawyer.
Hi - I practice in Tennessee.
L/E means a person has a Life Estate. A life estate means that a person has the right to occupy property until his/her death: http://en.wikipedia.org/wiki/Life_estate
REM means that there's a Remainderman. A remainderman is a person who inherits an interest in property or an estate once the ownership of the former owner expires: http://en.wikipedia.org/wiki/Remainderman
That's right. The remainderman doesn't have a right to sell the property UNLESS the life estate owner agrees to the sale or transfer as well.
The power of attorney can do anything that the person himself/herself can do. Thus, the POA could sell on behalf of the owner so long as it is in the person's best interest. If the POA does something against the interest of the person, it is a breach of fiduciary duty.