I've written mls2csv, a web app that takes in your MLS login and returns a CSV of all your listings: location, tax, HOA. The idea is to save time from poring through listing after listing. This way, you can get a tidy spreadsheet and make all your subsequent calculations in ONE place! Next up for me will be integrating it with the Rent-o-Meter API for house hacking numbers.

I'd love to get people's feedback on this. Moreso, I hope it can be useful!