diff --git a/app/constants/db_enums.rb b/app/constants/db_enums.rb
index 341d13155..4cd0a82e7 100644
--- a/app/constants/db_enums.rb
+++ b/app/constants/db_enums.rb
@@ -19,6 +19,13 @@ module DbEnums
     }
   end
 
+  def self.builtype
+    {
+      "Purpose built" => 1,
+      "Conversion" => 2
+    }
+  end
+
   def self.ecstat
     {
       "Part-time - Less than 30 hours" => 2,
diff --git a/config/forms/2021_2022.json b/config/forms/2021_2022.json
index 737acb070..0b62cef59 100644
--- a/config/forms/2021_2022.json
+++ b/config/forms/2021_2022.json
@@ -1522,7 +1522,7 @@
               "header": "",
               "description": "",
               "questions": {
-                "type_property_most_recently_let_as": {
+                "unitletas": {
                   "check_answer_label": "Type property most recently let as",
                   "header": "Which type was the property most recently let as?",
                   "hint_text": "",
diff --git a/db/migrate/20211124152204_change_recently_let_as_to_enum.rb b/db/migrate/20211124152204_change_recently_let_as_to_enum.rb
index 9758b400c..d5cddce59 100644
--- a/db/migrate/20211124152204_change_recently_let_as_to_enum.rb
+++ b/db/migrate/20211124152204_change_recently_let_as_to_enum.rb
@@ -3,6 +3,8 @@ class ChangeRecentlyLetAsToEnum < ActiveRecord::Migration[6.1]
     change_table :case_logs, bulk: true do |t|
       t.remove :type_property_most_recently_let_as
       t.column :unitletas, :int
+      t.remove :builtype
+      t.column :builtype, :int
     end
   end
 
@@ -10,6 +12,8 @@ class ChangeRecentlyLetAsToEnum < ActiveRecord::Migration[6.1]
     change_table :case_logs, bulk: true do |t|
       t.remove :unitletas
       t.column :type_property_most_recently_let_as, :string
+      t.remove :builtype
+      t.remove :builtype, :string
     end
   end
 end
diff --git a/db/schema.rb b/db/schema.rb
index ebc40c05b..0c8b93e67 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -167,8 +167,8 @@ ActiveRecord::Schema.define(version: 2021_11_24_152204) do
     t.string "property_postcode"
     t.integer "first_time_property_let_as_social_housing"
     t.string "why_dont_you_know_la"
-    t.string "builtype"
     t.integer "unitletas"
+    t.integer "builtype"
     t.index ["discarded_at"], name: "index_case_logs_on_discarded_at"
   end