diff --git a/examples/data/ldcE.ts b/examples/data/ldcE.ts
index bcab3b2e..1f3bdc56 100644
--- a/examples/data/ldcE.ts
+++ b/examples/data/ldcE.ts
@@ -280,7 +280,7 @@ export const validLDCE: Schema = {
     proposal: {
       projectType: [
         {
-          value: 'extend.outbuildings.studio',
+          value: 'extend.outbuilding.studio',
           description: 'Add an outbuilding - studio',
         },
       ],
diff --git a/schema/schema.json b/schema/schema.json
index 1a978387..e866a5e9 100644
--- a/schema/schema.json
+++ b/schema/schema.json
@@ -10974,24 +10974,6 @@
           ],
           "type": "object"
         },
-        {
-          "additionalProperties": false,
-          "properties": {
-            "description": {
-              "const": "Demolish an outbuilding (such as a garage or barn)",
-              "type": "string"
-            },
-            "value": {
-              "const": "demolish.outbuildings",
-              "type": "string"
-            }
-          },
-          "required": [
-            "value",
-            "description"
-          ],
-          "type": "object"
-        },
         {
           "additionalProperties": false,
           "properties": {
@@ -11532,366 +11514,6 @@
           ],
           "type": "object"
         },
-        {
-          "additionalProperties": false,
-          "properties": {
-            "description": {
-              "const": "Add an outbuilding (such as a shed, garage or garden office)",
-              "type": "string"
-            },
-            "value": {
-              "const": "extend.outbuildings",
-              "type": "string"
-            }
-          },
-          "required": [
-            "value",
-            "description"
-          ],
-          "type": "object"
-        },
-        {
-          "additionalProperties": false,
-          "properties": {
-            "description": {
-              "const": "Add an outbuilding - animal enclosure, aviary or beehive",
-              "type": "string"
-            },
-            "value": {
-              "const": "extend.outbuildings.animals",
-              "type": "string"
-            }
-          },
-          "required": [
-            "value",
-            "description"
-          ],
-          "type": "object"
-        },
-        {
-          "additionalProperties": false,
-          "properties": {
-            "description": {
-              "const": "Add an outbuilding - residential (or \"granny\") annexe",
-              "type": "string"
-            },
-            "value": {
-              "const": "extend.outbuildings.annexe",
-              "type": "string"
-            }
-          },
-          "required": [
-            "value",
-            "description"
-          ],
-          "type": "object"
-        },
-        {
-          "additionalProperties": false,
-          "properties": {
-            "description": {
-              "const": "Add an outbuilding - bedroom or guest room",
-              "type": "string"
-            },
-            "value": {
-              "const": "extend.outbuildings.bedroom",
-              "type": "string"
-            }
-          },
-          "required": [
-            "value",
-            "description"
-          ],
-          "type": "object"
-        },
-        {
-          "additionalProperties": false,
-          "properties": {
-            "description": {
-              "const": "Add an outbuilding - games room",
-              "type": "string"
-            },
-            "value": {
-              "const": "extend.outbuildings.games",
-              "type": "string"
-            }
-          },
-          "required": [
-            "value",
-            "description"
-          ],
-          "type": "object"
-        },
-        {
-          "additionalProperties": false,
-          "properties": {
-            "description": {
-              "const": "Add an outbuilding - garage",
-              "type": "string"
-            },
-            "value": {
-              "const": "extend.outbuildings.garage",
-              "type": "string"
-            }
-          },
-          "required": [
-            "value",
-            "description"
-          ],
-          "type": "object"
-        },
-        {
-          "additionalProperties": false,
-          "properties": {
-            "description": {
-              "const": "Add an outbuilding - greenhouse",
-              "type": "string"
-            },
-            "value": {
-              "const": "extend.outbuildings.greenhouse",
-              "type": "string"
-            }
-          },
-          "required": [
-            "value",
-            "description"
-          ],
-          "type": "object"
-        },
-        {
-          "additionalProperties": false,
-          "properties": {
-            "description": {
-              "const": "Add an outbuilding - gym",
-              "type": "string"
-            },
-            "value": {
-              "const": "extend.outbuildings.gym",
-              "type": "string"
-            }
-          },
-          "required": [
-            "value",
-            "description"
-          ],
-          "type": "object"
-        },
-        {
-          "additionalProperties": false,
-          "properties": {
-            "description": {
-              "const": "Add an outbuilding - office",
-              "type": "string"
-            },
-            "value": {
-              "const": "extend.outbuildings.office",
-              "type": "string"
-            }
-          },
-          "required": [
-            "value",
-            "description"
-          ],
-          "type": "object"
-        },
-        {
-          "additionalProperties": false,
-          "properties": {
-            "description": {
-              "const": "Add an outbuilding - something else",
-              "type": "string"
-            },
-            "value": {
-              "const": "extend.outbuildings.other",
-              "type": "string"
-            }
-          },
-          "required": [
-            "value",
-            "description"
-          ],
-          "type": "object"
-        },
-        {
-          "additionalProperties": false,
-          "properties": {
-            "description": {
-              "const": "Add an outbuilding - play house",
-              "type": "string"
-            },
-            "value": {
-              "const": "extend.outbuildings.play",
-              "type": "string"
-            }
-          },
-          "required": [
-            "value",
-            "description"
-          ],
-          "type": "object"
-        },
-        {
-          "additionalProperties": false,
-          "properties": {
-            "description": {
-              "const": "Add an outbuilding - sauna",
-              "type": "string"
-            },
-            "value": {
-              "const": "extend.outbuildings.sauna",
-              "type": "string"
-            }
-          },
-          "required": [
-            "value",
-            "description"
-          ],
-          "type": "object"
-        },
-        {
-          "additionalProperties": false,
-          "properties": {
-            "description": {
-              "const": "Add an outbuilding - shed",
-              "type": "string"
-            },
-            "value": {
-              "const": "extend.outbuildings.shed",
-              "type": "string"
-            }
-          },
-          "required": [
-            "value",
-            "description"
-          ],
-          "type": "object"
-        },
-        {
-          "additionalProperties": false,
-          "properties": {
-            "description": {
-              "const": "Add an outbuilding - car parking or smoking shelter",
-              "type": "string"
-            },
-            "value": {
-              "const": "extend.outbuildings.shelter",
-              "type": "string"
-            }
-          },
-          "required": [
-            "value",
-            "description"
-          ],
-          "type": "object"
-        },
-        {
-          "additionalProperties": false,
-          "properties": {
-            "description": {
-              "const": "Add an outbuilding - storage",
-              "type": "string"
-            },
-            "value": {
-              "const": "extend.outbuildings.store",
-              "type": "string"
-            }
-          },
-          "required": [
-            "value",
-            "description"
-          ],
-          "type": "object"
-        },
-        {
-          "additionalProperties": false,
-          "properties": {
-            "description": {
-              "const": "Add an outbuilding - studio",
-              "type": "string"
-            },
-            "value": {
-              "const": "extend.outbuildings.studio",
-              "type": "string"
-            }
-          },
-          "required": [
-            "value",
-            "description"
-          ],
-          "type": "object"
-        },
-        {
-          "additionalProperties": false,
-          "properties": {
-            "description": {
-              "const": "Add an outbuilding - summer house",
-              "type": "string"
-            },
-            "value": {
-              "const": "extend.outbuildings.summerHouse",
-              "type": "string"
-            }
-          },
-          "required": [
-            "value",
-            "description"
-          ],
-          "type": "object"
-        },
-        {
-          "additionalProperties": false,
-          "properties": {
-            "description": {
-              "const": "Add an outbuilding - swimming pool",
-              "type": "string"
-            },
-            "value": {
-              "const": "extend.outbuildings.swimmingPool",
-              "type": "string"
-            }
-          },
-          "required": [
-            "value",
-            "description"
-          ],
-          "type": "object"
-        },
-        {
-          "additionalProperties": false,
-          "properties": {
-            "description": {
-              "const": "Add an outbuilding - tank",
-              "type": "string"
-            },
-            "value": {
-              "const": "extend.outbuildings.tank",
-              "type": "string"
-            }
-          },
-          "required": [
-            "value",
-            "description"
-          ],
-          "type": "object"
-        },
-        {
-          "additionalProperties": false,
-          "properties": {
-            "description": {
-              "const": "Add an outbuilding - workshop",
-              "type": "string"
-            },
-            "value": {
-              "const": "extend.outbuildings.workshop",
-              "type": "string"
-            }
-          },
-          "required": [
-            "value",
-            "description"
-          ],
-          "type": "object"
-        },
         {
           "additionalProperties": false,
           "properties": {
diff --git a/types/enums/ProjectTypes.ts b/types/enums/ProjectTypes.ts
index 175f6796..73599487 100644
--- a/types/enums/ProjectTypes.ts
+++ b/types/enums/ProjectTypes.ts
@@ -213,7 +213,6 @@ export const ProjectTypes = {
   'demolish.boundary': 'Demolish a fence, gate or boundary wall',
   'demolish.full': 'Demolish a building',
   'demolish.outbuilding': 'Demolish an outbuilding (such as a garage or barn)',
-  'demolish.outbuildings': 'Demolish an outbuilding (such as a garage or barn)',
   'demolish.part': 'Demolish part of a building (such as an extension)',
   'demolish.part.conservatory': 'Demolish part of a conservatory',
   'demolish.replace': 'Demolish a building and build homes in its place',
@@ -248,30 +247,6 @@ export const ProjectTypes = {
   'extend.outbuilding.swimmingPool': 'Add an outbuilding - swimming pool',
   'extend.outbuilding.tank': 'Add an outbuilding - tank',
   'extend.outbuilding.workshop': 'Add an outbuilding - workshop',
-  'extend.outbuildings':
-    'Add an outbuilding (such as a shed, garage or garden office)',
-  'extend.outbuildings.animals':
-    'Add an outbuilding - animal enclosure, aviary or beehive',
-  'extend.outbuildings.annexe':
-    'Add an outbuilding - residential (or "granny") annexe',
-  'extend.outbuildings.bedroom': 'Add an outbuilding - bedroom or guest room',
-  'extend.outbuildings.games': 'Add an outbuilding - games room',
-  'extend.outbuildings.garage': 'Add an outbuilding - garage',
-  'extend.outbuildings.greenhouse': 'Add an outbuilding - greenhouse',
-  'extend.outbuildings.gym': 'Add an outbuilding - gym',
-  'extend.outbuildings.office': 'Add an outbuilding - office',
-  'extend.outbuildings.other': 'Add an outbuilding - something else',
-  'extend.outbuildings.play': 'Add an outbuilding - play house',
-  'extend.outbuildings.sauna': 'Add an outbuilding - sauna',
-  'extend.outbuildings.shed': 'Add an outbuilding - shed',
-  'extend.outbuildings.shelter':
-    'Add an outbuilding - car parking or smoking shelter',
-  'extend.outbuildings.store': 'Add an outbuilding - storage',
-  'extend.outbuildings.studio': 'Add an outbuilding - studio',
-  'extend.outbuildings.summerHouse': 'Add an outbuilding - summer house',
-  'extend.outbuildings.swimmingPool': 'Add an outbuilding - swimming pool',
-  'extend.outbuildings.tank': 'Add an outbuilding - tank',
-  'extend.outbuildings.workshop': 'Add an outbuilding - workshop',
   'extend.porch': 'Add a porch',
   'extend.porch.front': 'Add a porch to the front of the building',
   'extend.porch.rear': 'Add a porch to the rear of the building',