diff --git a/recommendations/Costs.py b/recommendations/Costs.py
index 1184d5ed..b005ab69 100644
--- a/recommendations/Costs.py
+++ b/recommendations/Costs.py
@@ -350,16 +350,31 @@ class Costs:
 
         total_cost = material["total_cost"] * insulation_floor_area
 
-        labour_hours = material["labour_hours_per_unit"] * insulation_floor_area
-        # To install suspended floor insulation, a small to medium size project might be conducted by a team of 3
-        # people
-        labour_days = (labour_hours / 8) / 3
+        # We assume the average house takes ~7 days to complete at £300/day incl. VAT, as per checkatrade
+        # which can be seen here: https://www.checkatrade.com/blog/cost-guides/floor-insulation-cost
+        # Assumptions
+        base_days = 7  # The quickest it will be completed
+        base_area = 45  # The area that can be completed in that time (for a typical 90m2 house)
+        labour_exponent = 0.85  # Non-linear scaling
+        daily_labour_rate = 300  # Based on checkatrade
+
+        min_days = 3  # Fewest days it will take
+        labour_days = max(
+            min_days,
+            base_days * (insulation_floor_area / base_area) ** labour_exponent
+        )
+
+        labour_cost = labour_days * daily_labour_rate
+
+        total_cost = total_cost + labour_cost
+
+        total_cost = round(total_cost, 2)
 
         return {
             "total": total_cost,
             "contingency": self.CONTINGENCIES["solid_floor_insulation"] * total_cost,
             "contingency_rate": self.CONTINGENCIES["solid_floor_insulation"],
-            "labour_hours": labour_hours,
+            "labour_hours": labour_days * 8,
             "labour_days": labour_days,
         }