In short, we want to be the Google Finance for Property Market.
Imagine property market data is as transparent as stock market data, you can easily retrieved property unit apt-complex, and district news. Their historical transaction price, some basic stats like avg purchase to rent ratio, floor plan, building age, etc. You can retrieve the price chart and perform analytics.
Mass Users: General homebuyers
Professional Users: Surveyors, Loan Issuers, Property Investors, real estate agents