Real estate sort of has insider trading laws, but in the opposite direction. If you know your building has a defect, you have to disclose it to any potential buyers. It's not exactly the same as a ban on insider trading, but it basically prevents the sort of insider trading where you know something bad is going to happen and so you dump the stock. Also there's a technical point: "insider" has a specific meaning (ie. an employee having material non public information). For real estate, commodities or crypto, it basically doesn't exist.