OpenPermit Reference implementation for Microsoft .NET. See it live:
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OpenPermit Reference implementation for Microsoft .NET

This is a reference implementation for the OpenPermit Specification developed in the Microsoft .NET environment and coded in the C# programming language. Sample ASP .NET WebAPI application and synchronization jobs to host remote data sets are included and ready to be deployed. Multiple adapters are implemented to extract data from popular Open Data portals and/or directly from the jurisdiction system of record.

You can see the latest release live featuring: Miami-Dade County, FL

Supported systems of record and data sources

Bugs and feature requests

Have a bug or a feature request? Please first search for existing and closed issues. If your problem or idea is not addressed yet, please open a new issue.


Please read through our contributing guidelines. Included are directions for opening issues, coding standards, and notes on development.


The official OpenPermit API specification and documentation is publicly hosted on GitHub Pages at

The live reference implementation at


Get updates on OpenPermit development and chat with the project maintainers and community members.

Copyright and license

Copyright 2016 OpenPermit Foundation, Inc. This code is released under the MIT License.