If you are unable to attend a real estate closing and sign the necessary documents you can have your attorney prepare a power of attorney for you. A power of attorney for real estate is a simple legal document that allows you to give someone the authority to buy or sell real estate for you.Complete the necessary forms: There are forms to fill out to designate power of attorney and the terms of the agreement. Select Power of Attorney under the Services menu. Select File a power of attorney from the drop-down menu. A Power of Attorney's role in streamlining transactions and facilitating closings. Learn how this legal tool empowers property deals. Powers of Attorney are legal agreements that give a 3rd party the right to make decisions on behalf of another. We've compiled 10 things you need to know. The New York Power of Attorney (POA) form is a legal document crucial for designating decisionmaking authority to an agent.