diff --git a/model_data/recommendations/WallRecommendations.py b/model_data/recommendations/WallRecommendations.py
index 95942007..b50a3646 100644
--- a/model_data/recommendations/WallRecommendations.py
+++ b/model_data/recommendations/WallRecommendations.py
@@ -188,6 +188,7 @@ wall_parts = external_wall_insulation_parts + internal_wall_insulation_parts
 class WallRecommendations(BaseUtility):
     YEAR_WALLS_BUILT_WITH_INSULATION = 1990
     U_VALUE_UNIT = 'w/m-¦k'
+    # TODO: REVIEW THESE FIGURES: RETROFIT ACADEMY COUSE INDICATED THAT IT SHOULD BE 0.3
     BUILDING_REGULATIONS_PART_L_MAX_U_VALUE = 0.18
     # Often cited minimum practical u-value
     DIMINISHING_RETURNS_U_VALUE = 0.15