diff --git a/etl/eligibility/Eligibility.py b/etl/eligibility/Eligibility.py
index f25d06bd..c4dc9de0 100644
--- a/etl/eligibility/Eligibility.py
+++ b/etl/eligibility/Eligibility.py
@@ -152,9 +152,14 @@ class Eligibility:
         is_partial_filled = (
             self.walls["is_as_built"] and self.walls["insulation_thickness"] not in ["below average"]
         )
+        # We look for potentially under performing cavities - anything that is assumed, as built and insulated
+        is_underperforming = (
+            self.walls["is_as_built"] and self.walls["insulation_thickness"] in ["average"] and self.walls["is_assumed"]
+        )
 
         is_unfilled_cavity = is_cavity and is_empty
         is_partial_filled_cavity = is_cavity and is_partial_filled
+        is_underperforming_cavity = is_cavity and is_underperforming
 
         if is_unfilled_cavity:
             self.cavity = {
@@ -170,6 +175,13 @@ class Eligibility:
             }
             return
 
+        if is_underperforming_cavity:
+            self.cavity = {
+                "suitability": True,
+                "type": "underperforming"
+            }
+            return
+
         self.cavity = {
             "suitability": False,
             "type": "full"
diff --git a/etl/eligibility/ha_15_32/ha4_app.py b/etl/eligibility/ha_15_32/ha4_app.py
index cc64dfad..8b102f6d 100644
--- a/etl/eligibility/ha_15_32/ha4_app.py
+++ b/etl/eligibility/ha_15_32/ha4_app.py
@@ -124,6 +124,7 @@ def get_ha_4_data(data, cleaned, cleaning_data, created_at):
                     "uprn": epc["uprn"],
                     "Location Name": property_meta["Location Name"],
                     "Post Code": property_meta["Post Code"],
+                    "property_type": eligibility.epc["property-type"],
                     "gbis_eligible": eligibility.gbis_warmfront,
                     "eco4_eligible": eligibility.eco4_warmfront["eligible"],
                     "eco4_message": eligibility.eco4_warmfront["message"],
@@ -135,6 +136,7 @@ def get_ha_4_data(data, cleaned, cleaning_data, created_at):
                     # Property components
                     "roof": eligibility.roof["clean_description"],
                     "walls": eligibility.walls["clean_description"],
+                    "cavity_type": eligibility.cavity["type"],
                     "heating": eligibility.epc["mainheat-description"],
                     "tenure": eligibility.tenure,
                     "date_epc": eligibility.epc["lodgement-date"],
diff --git a/etl/epc_clean/epc_attributes/MainheatAttributes.py b/etl/epc_clean/epc_attributes/MainheatAttributes.py
index e21f0d37..813e15a6 100644
--- a/etl/epc_clean/epc_attributes/MainheatAttributes.py
+++ b/etl/epc_clean/epc_attributes/MainheatAttributes.py
@@ -16,6 +16,7 @@ class MainHeatAttributes(Definitions):
         "solar assisted heat pump",
         "exhaust source heat pump",
         "community heat pump",
+        "portable electric heating"
     ]
     FUEL_TYPES = ["electric", "mains gas", "wood logs", "coal", "oil", "wood pellets", "anthracite",
                   "dual fuel mineral and wood", "smokeless fuel", "lpg", "b30k"]
diff --git a/etl/epc_clean/tests/test_data/test_mainheat_attributes_cases.py b/etl/epc_clean/tests/test_data/test_mainheat_attributes_cases.py
index d264ebff..558b176e 100644
--- a/etl/epc_clean/tests/test_data/test_mainheat_attributes_cases.py
+++ b/etl/epc_clean/tests/test_data/test_mainheat_attributes_cases.py
@@ -1652,4 +1652,17 @@ mainheat_cases = [
      'has_electricaire': False, 'has_assumed_for_most_rooms': False, 'has_underfloor_heating': False,
      "has_electric_heat_pumps": False,
      "has_micro-cogeneration": False},
+    {'original_description': 'Portable electric heating assumed for most rooms', 'has_radiators': False,
+     'has_fan_coil_units': False, 'has_pipes_in_screed_above_insulation': False,
+     'has_pipes_in_insulated_timber_floor': False, 'has_pipes_in_concrete_slab': False, 'has_boiler': False,
+     'has_air_source_heat_pump': False, 'has_room_heaters': False, 'has_electric_storage_heaters': False,
+     'has_warm_air': False, 'has_electric_underfloor_heating': False, 'has_electric_ceiling_heating': False,
+     'has_community_scheme': False, 'has_ground_source_heat_pump': False, 'has_no_system_present': False,
+     'has_portable_electric_heaters': False, 'has_water_source_heat_pump': False, 'has_electric_heat_pump': False,
+     'has_micro-cogeneration': False, 'has_solar_assisted_heat_pump': False, 'has_exhaust_source_heat_pump': False,
+     'has_community_heat_pump': False, 'has_portable_electric_heating': True, 'has_electric': True,
+     'has_mains_gas': False, 'has_wood_logs': False, 'has_coal': False, 'has_oil': False, 'has_wood_pellets': False,
+     'has_anthracite': False, 'has_dual_fuel_mineral_and_wood': False, 'has_smokeless_fuel': False, 'has_lpg': False,
+     'has_b30k': False, 'has_assumed': True, 'has_electricaire': False, 'has_assumed_for_most_rooms': True,
+     'has_underfloor_heating': False}
 ]