Is it really against the property regulations to install iron gates like this?

Hello: This practice is against the regulations. First, it affects fire fighting. When there is a safety hazard, do you have to remove the iron gate so that firefighters or equipment can use it, or can you run out faster? Second, if you do this, it is also difficult for the property management company. He is only responsible for property management and implements contracts signed by real estate developers. If you really want to build an idea, you should discuss it with real estate developers. Besides, there are property management companies, what are you afraid of? If you lose something, look for a property management company, even if you go to court, he has to accompany you!