Self-employed real estate agents have a certain amount of freedom and tax breaks, such as deducting your expenses.
An S-Corp has more administrative burden, like proper real estate accounting, but the benefits can be extensive.

An S-Corporation:

Reduces Liability. The incorporated business creates separation between personal assets and business assets. If your business were to be sued, only your business assets could be affected.

Can Lower Taxes. S-Corporation owners only pay employment taxes on a reasonable salary. Any remaining profits distributed are not subject to self-employment tax. As a sole proprietor, all profits are subject to self-employment tax.

Allows for better benefits, such as more retirement and healthcare options.

Reduces the risk of IRS audit. S-Corporations have historically had an audit rate of around %0.06 as opposed to the %0.22 of individual returns.