I am looking for some time-series data on construction costs in Australian property markets. Ideally the data would have information including city, property type (industrial, residential, etc), and $/sqm. Any relevant data would be welcome, even if it isn't specific to Australia.
Check out these databases on Quandl:
Australian Bureau of Statistics: https://www.quandl.com/data/AUSBS?keyword=construction
Organisation for Economic Co-Operation and Development with data on Australia: https://www.quandl.com/data/OECD?keyword=construction%20cost%20australia
National Institute of Statistics and Economic Studies with data on France: https://www.quandl.com/data/INSEE?keyword=construction%20cost
Hope these help you get started.
[Disclosure: I work for Quandl]