Have you considered Ravencoin as the platform?

Tokenization of Real Estate

https://tronblack.medium.com/ravencoin-digishares-nirvana-c2c09735647d

Restricted Assets vs ERC-1404

https://tronblack.medium.com/ravencoin-restricted-assets-vs-erc-1404-cc5a5dd2c3ed

STO on Ravencoin

https://tronblack.medium.com/ravencoin-a-securities-token-roadmap-47ae1d9dac26

Here are just a few articles. There are more. I have others that are more technical and get into the details of Restricted Asset functionality.