A room, in a person's home, equipped as an office so that the person may work from home(noun)
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Use "home office" in a sentence
"Narrative: On November 11, 1987, Ed Walters, a self-described prominent businessman and a happily married man with a son and daughter, was working in his home office in the early evening hours."
"Although the home office for the Santee Line of river barges was located in Natchez, Trace had always worked out of the terminal in New Orleans."
"Rhonda told me that she was led to go into her home office and select passages from Notes on the Course in Divinity, also called the Blue Book—a collection of teachings of Mary Baker Eddy, founder of Christian Science, as recorded by her students."