How about the elevator roof?

The quality of the house on the top floor is the same as that on other floors, and there is no difference in living experience. The reason why the top floor is cheaper than other floors is that the public generally think that the top floor is easy to leak and it is too hot in summer, which makes the top floor not very easy to sell. But it is hard to say whether these two situations will happen. Generally speaking, water leakage on the top floor is caused by poor construction technology in the past, which generally only appears on the house. Now the new house construction technology is quite good, and there will be no water leakage in 5- 10 years. And because the heat preservation is getting better and better now, it will not be too hot in summer. So if you can buy the top floor, it is still very cost-effective.