This is the 5201st most frequent Russian word.
низкие
"Низкие" means "low" (plural).
In this sentence, 'низкие' describes the height of the houses, indicating that they are short in stature.
Эти дома слишком низкие для высоких людей.
These houses are too short for tall people.
Here, 'низкая' (a form of 'низкие') refers to the cost, indicating that it is low, used figuratively in this context.
Стоимость обучения в этом университете очень низкая.
The tuition fee at this university is very low.
In this example, 'низкое' applied to 'освещение' (lighting) describes the low intensity of light rather than a physical height.