What is the ruling on working in a real estate display office for 150 Egyptian Pounds per month, knowing that the owner of the office takes half a month's rent from both the seller and the buyer?

There is no objection to the aforementioned work, provided that the worker observes the rulings of Islamic law. He must not lie, deceive, or act as an intermediary in the sale or rental of property for an unlawful benefit. It is obligatory to fulfill what has been agreed upon in the contract, for Allah Almighty says: "O you who have believed, fulfill [all] contracts," and the Prophet, peace and blessings be upon him, said: "Muslims are bound by their conditions."