The problem imo is that blockchain works well when you have to deal with data that is generated according to certain condition defined by the protocol, for physical / material assets not so much, unless the information can be verified by the whole network which is very unlikely for real estate, and it ends up depending on trusted third parties so blockchain are more going to be a waste than anything.
I do agree with this.
Blockchain for real estate is a meaningless combination, I suspect are made up to attract investors with a buzzword.
Fir s of all, I hardly doubt you'll ever need a blockchain for any
non-monetary application non Bitcoin application.
Secondly, as @IadixDev correctly stated, the oracle and his fairness represent a crucial weak point in any blockchain/physical world interaction.