Uncle Haskell lived in a renovated carriage house out back. There were a number of reasons why he preferred the privacy of his own establishment, one of which may have been the desire to save himself the distress of seeing his sister carry the load of responsibility that he had no intention of sharing.

Question: In the sentence above, what does the "out back" mean? Does that mean that Uncle Haskell lived in the carriage house before and going back to that place?
A carriage house is a small building for parking your carriage (before automobiles existed) behind the main house.


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Then, the sentence, "Uncle Haskell lived in a renovated carriage house out back." means that Uncle Haskell lived out of the main house building in the carriage house behind the main building?
 Clive's reply was promoted to an answer.
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Thanks, Clive....