Thanks so much for sending these sources through. I verified them and saw that they only contain parts of the data we assess (also tenure type and property value should be available). This has to do with the fact that our defined key datasets are our reference point. The source that is closest to our key dataset definition is this one: https://www.sla.gov.sg/inlis/#/
I will make sure to add a comment in the entry so that users are aware that parts of the data are available online under an open license. As we discussed in another topic, we might change the way we measure key datasets, and factor "incomplete" data into our score.