For a while I had a hobby project that would scrape real estate websites listing properties in my city. Goal was to try and figure out trends, pricing data, find good deals. Eventually the site added those features itself (heatmaps based on prices, for example)
With all that data you can do stuff like make heatmaps from pricing data, figure out the most attractive areas for certain profiles (singles, families, ...). You could then mash up that data to produce things like a "Walkscore" or let people indicate what's important for them (green areas, bars & restaurants, time & distance to other destinations, even crime levels) and then show real estate that meets their criteria.
Some sites in the US already show this but in other countries that's not the case, while the data's all there just to grab.
Most likely it wouldn't be legal and certainly not if you made money from it. But it's incredibly fun and hugely useful. Maybe that could get you started on some ideas!
With all that data you can do stuff like make heatmaps from pricing data, figure out the most attractive areas for certain profiles (singles, families, ...). You could then mash up that data to produce things like a "Walkscore" or let people indicate what's important for them (green areas, bars & restaurants, time & distance to other destinations, even crime levels) and then show real estate that meets their criteria.
Some sites in the US already show this but in other countries that's not the case, while the data's all there just to grab.
Most likely it wouldn't be legal and certainly not if you made money from it. But it's incredibly fun and hugely useful. Maybe that could get you started on some ideas!