depending on the context, both are slightly different

Rumah - rumah merah di Jakarta
Red houses in Jakarta

Rumah - rumah merah ada di Jakarta
Red houses are in Jakarta

No that would be ada di Jakarta

You need dari

i don't think so, i think 'houses are red in jakarta' means that all the house in jakarta is red in this topic, it shows the specific house in jakarta

cmiiw - :)

I didn't even consider this translation, but I think it could be correct.

Not all