Every time someone in Australia wants to build a pool, knock down a house, or develop a block of townhouses, they submit a Development Application (DA) to their local council. That's public data -- 18,000+ applications across 330+ councils, updated daily. Most people don't realise how powerful this data is when you combine it with other sources. I want to show you what I mean by walking through what we built with it, and then painting a picture of what's possible. How We Use DA Data: The Feasibility Calculator We built DA Leads to aggregate development applications from every Australian state. But aggregation alone isn't the interesting part. The interesting part is what happens when you layer DA data on top of other data sources. Take our feasibility calculator .…