Powers of attorney are commonly used in real estate transactions. For example, a power of attorney is used if purchasing or selling property in another state (or even in a distant area of your state) and you will not be there to sign the necessary papers.
The document will need to comply with the requirements of the title insurance company and/or the lender.
A power of attorney granting the power to buy or sell real estate will need to be executed in the same manner as required for a deed in the state where the property is located. This may require a certain number of witnesses, notarized signatures, and space requirements for recording information. Therefore, you may want to check with an attorney or real estate professional to confirm the requirements.