diff --git a/hub/city_model_structure/life_cycle_assessment/access_nrcan_catalogue.py b/hub/city_model_structure/life_cycle_assessment/access_nrcan_catalogue.py
index 4b2130da..c3fd5496 100644
--- a/hub/city_model_structure/life_cycle_assessment/access_nrcan_catalogue.py
+++ b/hub/city_model_structure/life_cycle_assessment/access_nrcan_catalogue.py
@@ -14,26 +14,31 @@ class AccessNrcanCatalog:
   """
   AccessNrcanCatalog class
   """
-  def __init__(self, path):
+  def __init__(
+          self, path,
+          archetypes='nrcan_archetypes.json',
+          constructions='nrcan_constructions.json'):
     self._path = Path(path)
-    self._archetypes = self._load_archetypes()
-    self._constructions = self._load_constructions()
+    self.archetypes = archetypes
+    self.constructions = constructions
 
   @property
   def archetypes(self):
     return self._archetypes
 
+  @archetypes.setter
+  def archetypes(self, archetypes):
+    archetypes_path = (self._path / archetypes).resolve()
+    self._archetypes = json.loads(archetypes_path.read_text())
+
   @property
   def constructions(self):
     return self._constructions
 
-  def _load_archetypes(self):
-    archetypes_path = (self._path / 'nrcan_archetypes.json').resolve()
-    return json.loads(archetypes_path.read_text())
-
-  def _load_constructions(self):
-    constructions_path = (self._path / 'nrcan_constructions.json').resolve()
-    return json.loads(constructions_path.read_text())
+  @constructions.setter
+  def constructions(self, constructions):
+    constructions_path = (self._path / constructions).resolve()
+    self._constructions = json.loads(constructions_path.read_text())
 
   def layers(self, opaque_surface_code, component_type):
     for opaque_surface in self.constructions['opaque_surfaces']:
@@ -56,4 +61,4 @@ class AccessNrcanCatalog:
       elif archetype['climate_zone'] != climate_zone:
         continue
       else:
-        return archetype['constructions']['OutdoorsWall']['opaque_surface_name']
\ No newline at end of file
+        return archetype['constructions']['OutdoorsWall']['opaque_surface_name']