Downtown Marianna Office Space for Sale. This 3,090 sq ft office building is located in the heart of downtown Marianna within walking distance to courthouse. This very nice office building is move in ready with lobby, 4 spacious offices, 2 conference rooms, 2 bathrooms, and a file room/break room. Partially furnished if buyer would like, or can be purchased without furnishings. Downstairs Basement heated and cooled for Storage. Owners will also entertain a triple net lease for $3,000 a month.