diff --git a/README.md b/README.md
index 8ae82d8b54bffee23b66f8f35cb9a9e11589c603..cd9dbe048a9bd59223bb898bf93fe9ba6ec57b07 100644
--- a/README.md
+++ b/README.md
@@ -33,3 +33,10 @@ to also output stdout use:
 Alternatively you can directly call individual test modules. For instance:
 
 `python -m  pytest -s tests/overpy_series_test.py`
+
+# Coding Guidelines 
+
+*  Use [type hints](https://mypy.readthedocs.io/en/stable/cheat_sheet_py3.html) for parameters and return values for each function you implement
+*  Each module should have basic [unit tests](https://realpython.com/python-testing/) so that we can catch coding errors before we push changes
+*  Common pittfalls --- for instance wrong EPSG --- should be handled via [warnings](https://docs.python.org/3/library/warnings.html) or exceptions so that errors are not introduced silently
+*  Whenever we are dealing with coordinates, we try to use [geopandas.GeoSeries](https://geopandas.org/reference/geopandas.GeoSeries.html) so that the projection is handled explicitly
\ No newline at end of file