zestimate-lambda

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zestimate-lambda

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λ🏠 AWS Lambda function for monitoring Zillow Zestimates

// repository documentation

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**As of September, 2024, Zillow/Bridge has limited API access to busineses.<br/>This ends seven years of acccessability to this API.<br/>This project is now archived.**

Zestimate Tracker (a/k/a update-zestimate)
==========================================

Python based AWS Lambda function for checking the Zillow Zestimate of a 
given property value.

When triggered, this function pulls a CSV from a configured S3 location 
and the current Zillow Zestimate (including rental estimates) for a 
specified property. If the date of the last update to the Zestimate is 
newer than the last date in the file, a message is published to an 
SNS topic with the new value and the full Zestimate response is 
appended to the CSV.

Zestimates API documentation: https://bridgedataoutput.com/docs/explorer/zestimates#listZestimates

Expected Environment Variables
------------------------------

+ zaddress - Address to track
+ zwsid - Bridge Interactive API Server Token (for server-to-server communication)
+ bucket_name - S3 bucket name to store Zestimate history
+ bucket_key - S3 object name to store Zestimate history
+ sns_topic_arn - SNS topic to publish to when new updates available

Deployment
----------

Continuous Deployment is done via the GitHub Actions workflow. Alternatively, 
the included [Makefile](./Makefile) will build a ZIP file which can be 
deployed to AWS Lambda. This ZIP file will include all dependencies 
(including Pandas, and therefore rather large).

Contributing
============

This project is governed by a [Code of Conduct](./CODE_OF_CONDUCT.md). By 
participating in this project you agree to abide by these terms.

License
=======

The [MIT License](LICENSE) applies.

zestimate-lambda

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