Did the same for my previous apartment. I wrote a script scraping various “self-sale” sites (sales without real estate agents), the script would notify me when

Did the same for my previous apartment. I wrote a script scraping various “self-sale” sites (sales without real estate agents), the script would notify me when new apartments living up to my criteria was posted online. When I got such a notification I would quickly check photos of the place etc. and then call the seller. The guy selling the place I ended buying, said it felt like I called him up instantly after he posted it online.