diff --git a/schema/schema.json b/schema/schema.json
index 06bebabe..9bfb8dc6 100644
--- a/schema/schema.json
+++ b/schema/schema.json
@@ -801,6 +801,24 @@
           ],
           "type": "object"
         },
+        {
+          "additionalProperties": false,
+          "properties": {
+            "description": {
+              "const": "Prior Approval - Specific Acts of Parliament or Local Orders",
+              "type": "string"
+            },
+            "value": {
+              "const": "pa.part18.classA",
+              "type": "string"
+            }
+          },
+          "required": [
+            "value",
+            "description"
+          ],
+          "type": "object"
+        },
         {
           "additionalProperties": false,
           "properties": {
diff --git a/types/enums/ApplicationTypes.ts b/types/enums/ApplicationTypes.ts
index 9c907934..bb312029 100644
--- a/types/enums/ApplicationTypes.ts
+++ b/types/enums/ApplicationTypes.ts
@@ -41,6 +41,8 @@ export const ApplicationTypes = {
   'pa.part11.classB': 'Prior Approval - Demolish a building',
   'pa.part14.classJ': 'Prior Approval - Install or change solar panels',
   'pa.part16.classA': 'Prior Approval - Install telecommunications equipment',
+  'pa.part18.classA':
+    'Prior Approval - Specific Acts of Parliament or Local Orders',
   'pa.part20.classA':
     'Prior Approval - Build homes on a detached blocks of flats',
   'pa.part20.classAA':