How do I apply the overlay to draw a line in maps Android?

Home buying tools, maps, data crunching etc.

• Glorious SO and I plan to buy a home in the next 18-30 months. I'd like to line up all the best tools, maps, and data to keep track of homes we've seen, neighborhoods and towns we'd consider, flood maps, commute times, train lines--really anything and everything that could inform this decision. Yes, yes, friends, colleagues and a good agent are great resources--but we want tools at this point! This is a question specifically addressed to those Mefites who take a quantitative, data-driven approach to everything. My SO and I like to crunch data. Currently we have a robust spreadsheet we use to model the carrying cost of a property (though happy to see other resources). We also have a Google map of homes we've toured, loved, hated--and the final closing price of each. I'm looking for tools that we can use to collate all the data we're getting in. What worked for your home search? We've got Trulia, Zillow, and Redfin covered. We're not looking for on advice how to buy a house; we're looking for how to analyze our way to our dream home. At the very least, I'd like an excellent map markup tool that would work with our existing Google maps that would allow us to annotate things like 1) a mile walking-radius around train or subway stations; 2) average commuting times; 3) public transit zones (and costs); 4) flood plains etc.; 5) ability to draw on the map freehand, either on iOS or or using a Wacom tablet). Google maps allows you to draw shapes with vertices (but not circles), and doesn't let you draw based on distance--though you can draw a route that's restricted to roads that can count distance. Paid is fine, though I'd rather not have a subscription (like http://www.scribblemaps.com). Beyond the maps, though, I'd like to keep (and share with Glorious SO) files of tear sheets, charts with property tax rates, political affiliations of towns (we would not do well in a very conservative town), lots of screen caps etc. I'm sort of imaging an elaborate police war room, but the murderer is my dream house. Or something. Everything should be off the shelf; we're not programmers. Mac and/or iOS.

• Answer:

  I used Redfin for a long time before I realized that you can download a ton of data from it. Set up your search appropriately (including to include past sales as well as current for sale), then use the download link at the lower left. The downloaded result includes many columns that aren't on the web page display.