Many thanks for the replies.
The house is not in a gated community. No security, no gym and no swimming pool. It's in a regular village.
The rental is reasonable. If the agent had made it clear that there's extra 500 baht per month for garbage collection and common fees when showing me the house, I would definitely take the house. But they decided to raise the rental only after I asked. It makes me feel they just tried to take the opportunity to charge me extra because they figured out I have no ideas how things work in Chiang Mai.
I just have a hunch It's possible there will be more unreasonable charges after I move in.
The house has everything that I look for but I've decided to walk away.
I really appreciate your advice!