"His house has a red roof and a garage."

Translation: Locuința lui are acoperișul roșu și un garaj.

[mascha53]

Why is ”house” translated as ”locuință” - I would expect to see ”casa” here.

[ovidiu_nl]

They're (imperfect) synonyms. I think “casa” would have been a more precise translation in this case.

“Casă” usually refers to a building inhabited as one unit, whereas "locuință” is more generic place-of-residence kind of thing (including houses, apartments etc).

[totolinoevivo]

There need to be multiple correct answers in cases like these. There is no reason why "Casa lui are un acoperis rosu si un garaj." should be deemed incorrect.