The avenger live and work here it open to the public. However the you would be stupid to do anything while they where there.

Hulks normal in his room either as Banner helping Tony with his next project.

Tony's in the lab tinkering with his armour and gadgets

Back Widow, Captain American and Hawkeye are train with vision and Thor

The pubic can talk to the avengers and young heros can train with them as well.