Based on past home purchase research experience, I realized Zillow or other MLS sites don't put dated historical transactions (or broker tried not to list them), and I end up with searching tax records a lot about the particular properties and other similar properties in the same building or neighborhood. The search helps me to understand the dynamic and histories of similar units and the bottom line of the seller based on the purchased price. With this in mind, I built the app along with vicinity information by leveraging NYC open data - NYPD complaints, noises, constructions, and Yelp's restaurants and Starbucks Coffee population information. The app currently covers NYC and NJ over 3 million' properties historical transactions. While the app is in the early stage, I hope you can provide feedback and suggestions. Thanks!

RealtyTrace

Historical property sales analytics and neighborhood data

Historical property sales analytics and neighborhood data