diff --git a/schemas.py b/schemas.py
index 6afa40f..562238a 100644
--- a/schemas.py
+++ b/schemas.py
@@ -1,7 +1,37 @@
+"""
+schemas module
+Defines the schemas to post on app.py
+SPDX - License - Identifier: LGPL - 3.0 - or -later
+Copyright © 2024 Concordia CERC group
+Code contributors: Alireza Adli alireza.adli@mail.concordia.ca
+"""
 from marshmallow import Schema, fields
 
 
-class LCAWorkflowSchema(Schema):
-  city_file_path = fields.Str(required=True)
-  archetypes_file_name = fields.Str(required=True)
-  constructions_file_name = fields.Str(required=True)
+class GeometrySchema(Schema):
+    """Schema for the geometry of a feature."""
+    type = fields.String(required=True)
+    coordinates = fields.List(fields.List(fields.List(fields.Float())), required=True)
+
+
+class PropertiesSchema(Schema):
+    """Schema for the properties of a feature."""
+    name = fields.String(required=True)
+    address = fields.String(required=True)
+    function = fields.String(required=True)
+    height = fields.Integer(required=True)
+    year_of_construction = fields.Integer(required=True)
+
+
+class FeatureSchema(Schema):
+    """Schema for a GeoJSON feature."""
+    type = fields.String(required=True)
+    geometry = fields.Nested(GeometrySchema, required=True)
+    id = fields.Integer(required=True)
+    properties = fields.Nested(PropertiesSchema, required=True)
+
+
+class LCAInputData(Schema):
+    """Define variables that come from user input."""
+    type = fields.String(required=True)
+    features = fields.List(fields.Nested(FeatureSchema), required=True)