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The word "There"

Sper ca am inteles cu exactitate ce ai zis. I was about to write in romanian what is next. :)) So... I think you should mention a certain context whith the tow sentences. Both are sound correct if you say them this way. I guess, when you wrote "Acolo sunt cinci case", you were thinking at "There are five houses". When I started first to learn english I saw this difference. When you, in english, say "there are", we only say "sunt", "exista", without "there", in romanian "acolo". Maybe that's why you were a little confuse. :)