Hi, glad you got it!
Real state tokens are usually on the form of security tokens. I'm not very familiar with those but you can read some information here: https://thesecuritytokenstandard.org/
The code for the token will not be the hard part, the hard part is working with exchanges willing to listing those tokens, there are some that work with security tokens and they will have different requirements and processes you have to follow to get approved.
This is just my personal view and how I would go for it, but you will have to do further research.
Thanks for reading!