duplex house

noun
1.
a house having separate apartments for two families, especially a two-story house having a complete apartment on each floor and two separate entrances.
Also called duplex.
Examples from the web for duplex house
  • For each single-family home or duplex house, one nameplate not exceeding a combined area of six square feet for each occupancy.
  • Perhaps your can work out some rule for the number of students renting a duplex house.
British Dictionary definitions for duplex house

duplex house

noun
1.
(US & Canadian) a house divided into two separate dwellings Also called (US) semidetached