單身老貓 and other lawyers, could you please help?

A friend of mine asked me to translate a document from Chinese to English for her, but I am at lost with this kind of document. I would really appreciate if any of you could help:

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委托书


我叫XX，现居住在美国。我在XX省XX市XX路拥有一套面积为XX的住宅，现由我母亲XXX，父亲XX居住。我委托他俩全权处理该住宅的一切事宜（包括出售，出租, 拆迁）。特此为证。


委托人　XX

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Also, is 委托书 same as "power of attorney"?

Thanks so much in advance!