How much does a two-family home cost in Marietta in 2026?

Pricing a two-family home in Marietta depends on the unit mix, permitted square footage, and rental income the second unit can legally carry, more than any single citywide number could capture. Cobb County assesses property at 40 percent of fair market value, but sale price is driven by comparable closings on similar duplex and in-law setups nearby, not by the assessment. There is no verified areawide figure to quote here. Joel Boss builds a comparative analysis from actual Marietta two-family closings before you set a number.