diff --git a/schema/schema.json b/schema/schema.json
index f910edb4..6c123aee 100644
--- a/schema/schema.json
+++ b/schema/schema.json
@@ -4056,6 +4056,75 @@
               ],
               "type": "object"
             },
+            {
+              "additionalProperties": false,
+              "properties": {
+                "description": {
+                  "const": "Listed Building - Grade I",
+                  "type": "string"
+                },
+                "intersects": {
+                  "const": false,
+                  "type": "boolean"
+                },
+                "value": {
+                  "const": "listed.grade.I",
+                  "type": "string"
+                }
+              },
+              "required": [
+                "description",
+                "intersects",
+                "value"
+              ],
+              "type": "object"
+            },
+            {
+              "additionalProperties": false,
+              "properties": {
+                "description": {
+                  "const": "Listed Building - Grade II",
+                  "type": "string"
+                },
+                "intersects": {
+                  "const": false,
+                  "type": "boolean"
+                },
+                "value": {
+                  "const": "listed.grade.II",
+                  "type": "string"
+                }
+              },
+              "required": [
+                "description",
+                "intersects",
+                "value"
+              ],
+              "type": "object"
+            },
+            {
+              "additionalProperties": false,
+              "properties": {
+                "description": {
+                  "const": "Listed Building - Grade II*",
+                  "type": "string"
+                },
+                "intersects": {
+                  "const": false,
+                  "type": "boolean"
+                },
+                "value": {
+                  "const": "listed.grade.II*",
+                  "type": "string"
+                }
+              },
+              "required": [
+                "description",
+                "intersects",
+                "value"
+              ],
+              "type": "object"
+            },
             {
               "additionalProperties": false,
               "properties": {
@@ -5132,6 +5201,168 @@
               ],
               "type": "object"
             },
+            {
+              "additionalProperties": false,
+              "properties": {
+                "description": {
+                  "const": "Listed Building - Grade I",
+                  "type": "string"
+                },
+                "entities": {
+                  "anyOf": [
+                    {
+                      "items": {
+                        "additionalProperties": false,
+                        "properties": {
+                          "description": {
+                            "type": "string"
+                          },
+                          "name": {
+                            "type": "string"
+                          },
+                          "source": {
+                            "$ref": "#/definitions/URL"
+                          }
+                        },
+                        "required": [
+                          "name"
+                        ],
+                        "type": "object"
+                      },
+                      "type": "array"
+                    },
+                    {
+                      "maxItems": 0,
+                      "minItems": 0,
+                      "type": "array"
+                    }
+                  ]
+                },
+                "intersects": {
+                  "const": true,
+                  "type": "boolean"
+                },
+                "value": {
+                  "const": "listed.grade.I",
+                  "type": "string"
+                }
+              },
+              "required": [
+                "description",
+                "entities",
+                "intersects",
+                "value"
+              ],
+              "type": "object"
+            },
+            {
+              "additionalProperties": false,
+              "properties": {
+                "description": {
+                  "const": "Listed Building - Grade II",
+                  "type": "string"
+                },
+                "entities": {
+                  "anyOf": [
+                    {
+                      "items": {
+                        "additionalProperties": false,
+                        "properties": {
+                          "description": {
+                            "type": "string"
+                          },
+                          "name": {
+                            "type": "string"
+                          },
+                          "source": {
+                            "$ref": "#/definitions/URL"
+                          }
+                        },
+                        "required": [
+                          "name"
+                        ],
+                        "type": "object"
+                      },
+                      "type": "array"
+                    },
+                    {
+                      "maxItems": 0,
+                      "minItems": 0,
+                      "type": "array"
+                    }
+                  ]
+                },
+                "intersects": {
+                  "const": true,
+                  "type": "boolean"
+                },
+                "value": {
+                  "const": "listed.grade.II",
+                  "type": "string"
+                }
+              },
+              "required": [
+                "description",
+                "entities",
+                "intersects",
+                "value"
+              ],
+              "type": "object"
+            },
+            {
+              "additionalProperties": false,
+              "properties": {
+                "description": {
+                  "const": "Listed Building - Grade II*",
+                  "type": "string"
+                },
+                "entities": {
+                  "anyOf": [
+                    {
+                      "items": {
+                        "additionalProperties": false,
+                        "properties": {
+                          "description": {
+                            "type": "string"
+                          },
+                          "name": {
+                            "type": "string"
+                          },
+                          "source": {
+                            "$ref": "#/definitions/URL"
+                          }
+                        },
+                        "required": [
+                          "name"
+                        ],
+                        "type": "object"
+                      },
+                      "type": "array"
+                    },
+                    {
+                      "maxItems": 0,
+                      "minItems": 0,
+                      "type": "array"
+                    }
+                  ]
+                },
+                "intersects": {
+                  "const": true,
+                  "type": "boolean"
+                },
+                "value": {
+                  "const": "listed.grade.II*",
+                  "type": "string"
+                }
+              },
+              "required": [
+                "description",
+                "entities",
+                "intersects",
+                "value"
+              ],
+              "type": "object"
+            },
             {
               "additionalProperties": false,
               "properties": {
diff --git a/types/enums/PlanningConstraints.ts b/types/enums/PlanningConstraints.ts
index 82166d7b..b8dd4ae7 100644
--- a/types/enums/PlanningConstraints.ts
+++ b/types/enums/PlanningConstraints.ts
@@ -18,6 +18,9 @@ export const PlanningDesignations = {
   'flood.zone.2': 'Flood Risk Zone 2 - Medium risk',
   'flood.zone.3': 'Flood Risk Zone 3 - High risk',
   listed: 'Listed Building',
+  'listed.grade.I': 'Listed Building - Grade I',
+  'listed.grade.II': 'Listed Building - Grade II',
+  'listed.grade.II*': 'Listed Building - Grade II*',
   locallyListed: 'Locally Listed Building',
   monument: 'Site of a Scheduled Monument',
   'nature.ASNW': 'Ancient Semi-Natural Woodland (ASNW)',