diff --git a/Gemfile b/Gemfile
index deaf820b7..2e94d7e75 100644
--- a/Gemfile
+++ b/Gemfile
@@ -37,6 +37,7 @@ gem "devise", github: "ghiculescu/devise", branch: "error-code-422"
 # UK postcode parsing and validation
 gem "uk_postcode"
 # Use Ruby objects to build reusable markup. A React inspired evolution of the presenter pattern
+gem "postcodes_io"
 gem "view_component"
 
 group :development, :test do
@@ -66,6 +67,7 @@ group :test do
   gem "factory_bot_rails"
   gem "selenium-webdriver", require: false
   gem "simplecov", require: false
+  gem "webmock"
   %w[rspec-core rspec-expectations rspec-mocks rspec-rails rspec-support].each do |lib|
     gem lib, git: "https://github.com/rspec/#{lib}.git", branch: "main", require: false
   end
diff --git a/Gemfile.lock b/Gemfile.lock
index d2f2bd632..cad5c5eb5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -158,6 +158,8 @@ GEM
     childprocess (4.1.0)
     coderay (1.1.3)
     concurrent-ruby (1.1.9)
+    crack (0.4.5)
+      rexml
     crass (1.0.6)
     deep_merge (1.2.1)
     diff-lcs (1.4.4)
@@ -169,6 +171,7 @@ GEM
       dotenv (= 2.7.6)
       railties (>= 3.2)
     erubi (1.10.0)
+    excon (0.89.0)
     factory_bot (6.2.0)
       activesupport (>= 5.0.0)
     factory_bot_rails (6.2.0)
@@ -192,6 +195,7 @@ GEM
     has_scope (0.8.0)
       actionpack (>= 5.2)
       activesupport (>= 5.2)
+    hashdiff (1.0.1)
     hotwire-rails (0.1.3)
       rails (>= 6.0.0)
       stimulus-rails
@@ -252,6 +256,8 @@ GEM
     parser (3.0.3.1)
       ast (~> 2.4.1)
     pg (1.2.3)
+    postcodes_io (0.4.0)
+      excon (~> 0.39)
     pry (0.13.1)
       coderay (~> 1.1)
       method_source (~> 1.0)
@@ -389,6 +395,10 @@ GEM
       activemodel (>= 6.0.0)
       bindex (>= 0.4.0)
       railties (>= 6.0.0)
+    webmock (3.14.0)
+      addressable (>= 2.8.0)
+      crack (>= 0.3.2)
+      hashdiff (>= 0.4.0, < 2.0.0)
     webpacker (5.4.3)
       activesupport (>= 5.2)
       rack-proxy (>= 0.6.1)
@@ -425,6 +435,7 @@ DEPENDENCIES
   listen (~> 3.3)
   overcommit (>= 0.37.0)
   pg (~> 1.1)
+  postcodes_io
   pry-byebug
   puma (~> 5.0)
   rack-mini-profiler (~> 2.0)
@@ -445,6 +456,7 @@ DEPENDENCIES
   uk_postcode
   view_component
   web-console (>= 4.1.0)
+  webmock
   webpacker (~> 5.0)
 
 RUBY VERSION
diff --git a/app/models/case_log.rb b/app/models/case_log.rb
index 7ea9af741..50444d311 100644
--- a/app/models/case_log.rb
+++ b/app/models/case_log.rb
@@ -1,3 +1,5 @@
+require "postcodes_io"
+
 class CaseLogValidator < ActiveModel::Validator
   # Validations methods need to be called 'validate_' to run on model save
   # or form page submission
@@ -117,7 +119,7 @@ class CaseLog < ApplicationRecord
   enum postcode_known: POLAR, _suffix: true
   enum la_known: POLAR, _suffix: true
 
-  AUTOGENERATED_FIELDS = %w[id status created_at updated_at discarded_at renttype lettype].freeze
+  AUTOGENERATED_FIELDS = %w[id status created_at updated_at discarded_at renttype lettype is_la_inferred].freeze
   OPTIONAL_FIELDS = %w[postcode_known
                        la_known
                        first_time_property_let_as_social_housing].freeze
@@ -159,6 +161,8 @@ class CaseLog < ApplicationRecord
 
 private
 
+  PIO = Postcodes::IO.new
+
   def update_status!
     self.status = if all_fields_completed? && errors.empty?
                     "completed"
@@ -193,6 +197,20 @@ private
     self.hhmemb = other_hhmemb + 1 if other_hhmemb.present?
     self.renttype = RENT_TYPE_MAPPING[rent_type]
     self.lettype = "#{renttype} #{needstype} #{owning_organisation['Org type']}" if renttype.present? && needstype.present? && owning_organisation["Org type"].present?
+    self.is_la_inferred = false if is_la_inferred.nil?
+    self.la = get_la(property_postcode)
+  end
+
+  def get_la(postcode)
+    if postcode.present?
+      postcode_lookup = PIO.lookup(postcode)
+      if postcode_lookup && postcode_lookup.info.present?
+        self.is_la_inferred = true
+        return postcode_lookup.admin_district
+      end
+    end
+    self.la = nil
+    self.is_la_inferred = false
   end
 
   def all_fields_completed?
diff --git a/app/models/form/page.rb b/app/models/form/page.rb
index 6ee911de6..2cdebff39 100644
--- a/app/models/form/page.rb
+++ b/app/models/form/page.rb
@@ -24,7 +24,7 @@ class Form::Page
     return true unless depends_on
 
     depends_on.all? do |question, value|
-      case_log[question].present? && case_log[question] == value
+      !case_log[question].nil? && case_log[question] == value
     end
   end
 end
diff --git a/config/forms/2021_2022.json b/config/forms/2021_2022.json
index a9b458c2e..09485844b 100644
--- a/config/forms/2021_2022.json
+++ b/config/forms/2021_2022.json
@@ -1119,10 +1119,10 @@
                     "1": "Yes"
                   },
                   "conditional_for": {
-                    "postcode": ["Yes"]
+                    "property_postcode": ["Yes"]
                   }
                 },
-                "postcode": {
+                "property_postcode": {
                   "check_answer_label": "Postcode",
                   "header": "",
                   "hint_text": "",
@@ -1145,7 +1145,8 @@
                     "1": "Yes"
                   }
                 }
-              }
+              },
+              "depends_on": {"is_la_inferred": false}
             },
             "select_local_authority": {
               "header": "",
@@ -1473,7 +1474,7 @@
                   }
                 }
               },
-              "depends_on": { "la_known": "Yes" }
+              "depends_on": { "la_known": "Yes", "is_la_inferred": false }
             },
             "why_dont_you_know_la": {
               "header": "",
@@ -1486,7 +1487,7 @@
                   "type": "textarea"
                 }
               },
-              "depends_on": { "la_known": "No" }
+              "depends_on": { "la_known": "No", "is_la_inferred": false }
             },
             "first_time_property_let_as_social_housing": {
               "header": "",
diff --git a/db/migrate/20211209092131_add_is_la_inferred.rb b/db/migrate/20211209092131_add_is_la_inferred.rb
new file mode 100644
index 000000000..d53c06c3d
--- /dev/null
+++ b/db/migrate/20211209092131_add_is_la_inferred.rb
@@ -0,0 +1,7 @@
+class AddIsLaInferred < ActiveRecord::Migration[6.1]
+  def change
+    change_table :case_logs, bulk: true do |t|
+      t.column :is_la_inferred, :boolean
+    end
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 7f5ba379d..70cdb5569 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -174,6 +174,7 @@ ActiveRecord::Schema.define(version: 2021_12_13_122642) do
     t.integer "day"
     t.integer "month"
     t.integer "year"
+    t.boolean "is_la_inferred"
     t.index ["discarded_at"], name: "index_case_logs_on_discarded_at"
     t.index ["managing_organisation_id"], name: "index_case_logs_on_managing_organisation_id"
     t.index ["owning_organisation_id"], name: "index_case_logs_on_owning_organisation_id"
diff --git a/spec/controllers/admin/case_logs_controller_spec.rb b/spec/controllers/admin/case_logs_controller_spec.rb
index 8c4d9a1e6..13684951c 100644
--- a/spec/controllers/admin/case_logs_controller_spec.rb
+++ b/spec/controllers/admin/case_logs_controller_spec.rb
@@ -1,7 +1,11 @@
 require "rails_helper"
 require_relative "../../support/devise"
+require_relative "../../request_helper"
 
 describe Admin::CaseLogsController, type: :controller do
+  before do
+    RequestHelper.stub_http_requests
+  end
   render_views
   let(:page) { Capybara::Node::Simple.new(response.body) }
   let(:resource_title) { "Logs" }
diff --git a/spec/controllers/admin/dashboard_controller_spec.rb b/spec/controllers/admin/dashboard_controller_spec.rb
index 6b9f6f808..8bf8652d2 100644
--- a/spec/controllers/admin/dashboard_controller_spec.rb
+++ b/spec/controllers/admin/dashboard_controller_spec.rb
@@ -1,7 +1,11 @@
 require "rails_helper"
 require_relative "../../support/devise"
+require_relative "../../request_helper"
 
 describe Admin::DashboardController, type: :controller do
+  before do
+    RequestHelper.stub_http_requests
+  end
   render_views
   let(:page) { Capybara::Node::Simple.new(response.body) }
   let(:resource_title) { "Dashboard" }
diff --git a/spec/features/form/check_answers_page_spec.rb b/spec/features/form/check_answers_page_spec.rb
index a3abeae4f..57e09c295 100644
--- a/spec/features/form/check_answers_page_spec.rb
+++ b/spec/features/form/check_answers_page_spec.rb
@@ -1,5 +1,6 @@
 require "rails_helper"
 require_relative "helpers"
+require_relative "../../request_helper"
 
 RSpec.describe "Form Check Answers Page" do
   include Helpers
@@ -22,6 +23,7 @@ RSpec.describe "Form Check Answers Page" do
   let(:id) { case_log.id }
 
   before do
+    RequestHelper.stub_http_requests
     sign_in user
   end
 
diff --git a/spec/features/form/conditional_questions_spec.rb b/spec/features/form/conditional_questions_spec.rb
index fe6d866ce..357b0414d 100644
--- a/spec/features/form/conditional_questions_spec.rb
+++ b/spec/features/form/conditional_questions_spec.rb
@@ -1,5 +1,6 @@
 require "rails_helper"
 require_relative "helpers"
+require_relative "../../request_helper"
 
 RSpec.describe "Form Conditional Questions" do
   include Helpers
@@ -15,6 +16,7 @@ RSpec.describe "Form Conditional Questions" do
   let(:id) { case_log.id }
 
   before do
+    RequestHelper.stub_http_requests
     sign_in user
   end
 
diff --git a/spec/features/form/form_navigation_spec.rb b/spec/features/form/form_navigation_spec.rb
index 353497eb8..445ff98e5 100644
--- a/spec/features/form/form_navigation_spec.rb
+++ b/spec/features/form/form_navigation_spec.rb
@@ -1,5 +1,6 @@
 require "rails_helper"
 require_relative "helpers"
+require_relative "../../request_helper"
 
 RSpec.describe "Form Navigation" do
   include Helpers
@@ -23,6 +24,7 @@ RSpec.describe "Form Navigation" do
   end
 
   before do
+    RequestHelper.stub_http_requests
     sign_in user
   end
 
diff --git a/spec/features/form/page_routing_spec.rb b/spec/features/form/page_routing_spec.rb
index c7b37ac04..5c33f4b8c 100644
--- a/spec/features/form/page_routing_spec.rb
+++ b/spec/features/form/page_routing_spec.rb
@@ -1,5 +1,6 @@
 require "rails_helper"
 require_relative "helpers"
+require_relative "../../request_helper"
 
 RSpec.describe "Form Page Routing" do
   include Helpers
@@ -15,6 +16,7 @@ RSpec.describe "Form Page Routing" do
   let(:id) { case_log.id }
 
   before do
+    RequestHelper.stub_http_requests
     allow_any_instance_of(CaseLogValidator).to receive(:validate_pregnancy).and_return(true)
     sign_in user
   end
@@ -45,4 +47,29 @@ RSpec.describe "Form Page Routing" do
     click_button("Save and continue")
     expect(page).to have_current_path("/logs/#{id}/conditional-question/check-answers")
   end
+
+  context "inferred answers routing", js: true do
+    it "shows question if the answer could not be inferred" do
+      visit("/logs/#{id}/property-postcode")
+      fill_in("case-log-property-postcode-field", with: "P0 5ST")
+      click_button("Save and continue")
+      expect(page).to have_current_path("/logs/#{id}/do-you-know-the-local-authority")
+    end
+
+    it "shows question if the answer could not be inferred" do
+      visit("/logs/#{id}/property-postcode")
+      click_button("Save and continue")
+      expect(page).to have_current_path("/logs/#{id}/do-you-know-the-local-authority")
+    end
+
+    it "does not show question if the answer could be inferred" do
+      stub_request(:get, /api.postcodes.io/)
+        .to_return(status: 200, body: "{\"status\":200,\"result\":{\"admin_district\":\"Manchester\"}}", headers: {})
+
+      visit("/logs/#{id}/property-postcode")
+      fill_in("case-log-property-postcode-field", with: "P0 5ST")
+      click_button("Save and continue")
+      expect(page).to have_current_path("/logs/#{id}/property-wheelchair-accessible")
+    end
+  end
 end
diff --git a/spec/features/form/saving_data_spec.rb b/spec/features/form/saving_data_spec.rb
index f419a3438..c4e634909 100644
--- a/spec/features/form/saving_data_spec.rb
+++ b/spec/features/form/saving_data_spec.rb
@@ -1,5 +1,6 @@
 require "rails_helper"
 require_relative "helpers"
+require_relative "../../request_helper"
 
 RSpec.describe "Form Saving Data" do
   include Helpers
@@ -31,6 +32,7 @@ RSpec.describe "Form Saving Data" do
   end
 
   before do
+    RequestHelper.stub_http_requests
     sign_in user
   end
 
diff --git a/spec/features/form/validations_spec.rb b/spec/features/form/validations_spec.rb
index 83999139c..4aa72e261 100644
--- a/spec/features/form/validations_spec.rb
+++ b/spec/features/form/validations_spec.rb
@@ -1,7 +1,13 @@
 require "rails_helper"
 require_relative "helpers"
+require_relative "../../request_helper"
 
 RSpec.describe "validations" do
+  before do
+    RequestHelper.stub_http_requests
+    sign_in user
+  end
+
   include Helpers
   let(:user) { FactoryBot.create(:user) }
   let(:case_log) do
@@ -21,10 +27,6 @@ RSpec.describe "validations" do
   end
   let(:id) { case_log.id }
 
-  before do
-    sign_in user
-  end
-
   describe "Question validation" do
     context "given an invalid tenant age" do
       it " of less than 0 it shows validation" do
diff --git a/spec/fixtures/forms/test_form.json b/spec/fixtures/forms/test_form.json
index 71d002e13..d2c234bc0 100644
--- a/spec/fixtures/forms/test_form.json
+++ b/spec/fixtures/forms/test_form.json
@@ -224,6 +224,36 @@
           "property_information": {
             "label": "Property information",
             "pages": {
+              "property_postcode": {
+                "header": "",
+                "description": "",
+                "questions": {
+                  "property_postcode": {
+                    "check_answer_label": "Postcode",
+                    "header": "",
+                    "hint_text": "",
+                    "type": "text",
+                    "width": 5
+                  }
+                }
+              },
+              "do_you_know_the_local_authority": {
+                "header": "",
+                "description": "",
+                "questions": {
+                  "la_known": {
+                    "check_answer_label": "Do you know what local authority the property is located in?",
+                    "header": "Do you know what local authority the property is located in?",
+                    "hint_text": "",
+                    "type": "radio",
+                    "answer_options": {
+                      "0": "No",
+                      "1": "Yes"
+                    }
+                  }
+                },
+                "depends_on": {"is_la_inferred": false}
+              },
               "property_wheelchair_accessible": {
                 "questions": {
                   "wchair": {
diff --git a/spec/helpers/tasklist_helper_spec.rb b/spec/helpers/tasklist_helper_spec.rb
index e609c142b..704866ce9 100644
--- a/spec/helpers/tasklist_helper_spec.rb
+++ b/spec/helpers/tasklist_helper_spec.rb
@@ -1,6 +1,10 @@
 require "rails_helper"
+require_relative "../request_helper"
 
 RSpec.describe TasklistHelper do
+  before do
+    RequestHelper.stub_http_requests
+  end
   let(:empty_case_log) { FactoryBot.create(:case_log) }
   let(:case_log) { FactoryBot.create(:case_log, :in_progress) }
   form_handler = FormHandler.instance
@@ -31,7 +35,7 @@ RSpec.describe TasklistHelper do
     end
 
     it "returns the number of sections in progress" do
-      expect(get_subsections_count(form, case_log, :in_progress)).to eq(2)
+      expect(get_subsections_count(form, case_log, :in_progress)).to eq(3)
     end
 
     it "returns 0 for invalid state" do
diff --git a/spec/models/case_log_spec.rb b/spec/models/case_log_spec.rb
index 8086aa3e3..c8ad9195e 100644
--- a/spec/models/case_log_spec.rb
+++ b/spec/models/case_log_spec.rb
@@ -1,8 +1,12 @@
 require "rails_helper"
+require_relative "../request_helper"
 
 RSpec.describe Form, type: :model do
   let(:owning_organisation) { FactoryBot.create(:organisation) }
   let(:managing_organisation) { owning_organisation }
+  before do
+    RequestHelper.stub_http_requests
+  end
 
   describe "#new" do
     it "validates age is a number" do
@@ -1016,5 +1020,44 @@ RSpec.describe Form, type: :model do
       expect(record_from_db["month"]).to eq(10)
       expect(record_from_db["year"]).to eq(2021)
     end
+
+    context "addresses" do
+      before do
+        stub_request(:get, /api.postcodes.io/)
+          .to_return(status: 200, body: "{\"status\":200,\"result\":{\"admin_district\":\"Manchester\"}}", headers: {})
+      end
+
+      let!(:address_case_log) do
+        CaseLog.create({
+          managing_organisation: organisation,
+          owning_organisation: organisation,
+          property_postcode: "M1 1AE",
+        })
+      end
+
+      it "correctly infers la" do
+        address_case_log.reload
+
+        record_from_db = ActiveRecord::Base.connection.execute("select la from case_logs where id=#{address_case_log.id}").to_a[0]
+        expect(address_case_log.la).to eq("Manchester")
+        expect(record_from_db["la"]).to eq("E08000003")
+      end
+
+      it "correctly resets all fields" do
+        address_case_log.reload
+
+        record_from_db = ActiveRecord::Base.connection.execute("select la from case_logs where id=#{address_case_log.id}").to_a[0]
+        expect(address_case_log.la).to eq("Manchester")
+        expect(record_from_db["la"]).to eq("E08000003")
+
+        address_case_log.update!({ property_postcode: "" })
+        address_case_log.reload
+
+        record_from_db = ActiveRecord::Base.connection.execute("select la, property_postcode from case_logs where id=#{address_case_log.id}").to_a[0]
+        expect(record_from_db["property_postcode"]).to eq("")
+        expect(address_case_log.la).to eq(nil)
+        expect(record_from_db["la"]).to eq(nil)
+      end
+    end
   end
 end
diff --git a/spec/models/form_handler_spec.rb b/spec/models/form_handler_spec.rb
index e87765aac..4e5883ec2 100644
--- a/spec/models/form_handler_spec.rb
+++ b/spec/models/form_handler_spec.rb
@@ -15,7 +15,7 @@ RSpec.describe FormHandler do
       form_handler = FormHandler.instance
       form = form_handler.get_form("test_form")
       expect(form).to be_a(Form)
-      expect(form.pages.count).to eq(25)
+      expect(form.pages.count).to eq(27)
     end
   end
 
diff --git a/spec/models/organisation_spec.rb b/spec/models/organisation_spec.rb
index 1194483d9..99a7cab96 100644
--- a/spec/models/organisation_spec.rb
+++ b/spec/models/organisation_spec.rb
@@ -1,6 +1,10 @@
 require "rails_helper"
+require_relative "../request_helper"
 
 RSpec.describe Organisation, type: :model do
+  before do
+    RequestHelper.stub_http_requests
+  end
   describe "#new" do
     let(:user) { FactoryBot.create(:user) }
     let(:organisation) { user.organisation }
diff --git a/spec/models/user_spec.rb b/spec/models/user_spec.rb
index 3195b73a0..1c65f597e 100644
--- a/spec/models/user_spec.rb
+++ b/spec/models/user_spec.rb
@@ -1,6 +1,10 @@
 require "rails_helper"
+require_relative "../request_helper"
 
 RSpec.describe User, type: :model do
+  before do
+    RequestHelper.stub_http_requests
+  end
   describe "#new" do
     let(:user) { FactoryBot.create(:user) }
     let(:other_organisation) { FactoryBot.create(:organisation) }
diff --git a/spec/request_helper.rb b/spec/request_helper.rb
new file mode 100644
index 000000000..c939e7afa
--- /dev/null
+++ b/spec/request_helper.rb
@@ -0,0 +1,9 @@
+require "webmock/rspec"
+
+module RequestHelper
+  def self.stub_http_requests
+    WebMock.disable_net_connect!(allow_localhost: true)
+    WebMock.stub_request(:get, /api.postcodes.io/)
+      .to_return(status: 200, body: "{\"status\":404,\"error\":\"Postcode not found\"}", headers: {})
+  end
+end
diff --git a/spec/requests/case_log_controller_spec.rb b/spec/requests/case_log_controller_spec.rb
index 0dac4f9b3..c46394742 100644
--- a/spec/requests/case_log_controller_spec.rb
+++ b/spec/requests/case_log_controller_spec.rb
@@ -1,4 +1,5 @@
 require "rails_helper"
+require_relative "../request_helper"
 
 RSpec.describe CaseLogsController, type: :request do
   let(:owning_organisation) { FactoryBot.create(:organisation) }
@@ -19,6 +20,7 @@ RSpec.describe CaseLogsController, type: :request do
   end
 
   before do
+    RequestHelper.stub_http_requests
     allow(ENV).to receive(:[])
     allow(ENV).to receive(:[]).with("API_USER").and_return(api_username)
     allow(ENV).to receive(:[]).with("API_KEY").and_return(api_password)
@@ -136,6 +138,7 @@ RSpec.describe CaseLogsController, type: :request do
       let(:headers) { { "Accept" => "text/html" } }
 
       before do
+        RequestHelper.stub_http_requests
         sign_in user
         get "/logs", headers: headers, params: {}
       end
diff --git a/spec/requests/soft_validations_controller_spec.rb b/spec/requests/soft_validations_controller_spec.rb
index 56bccea9d..03dd71c06 100644
--- a/spec/requests/soft_validations_controller_spec.rb
+++ b/spec/requests/soft_validations_controller_spec.rb
@@ -1,10 +1,15 @@
 require "rails_helper"
+require_relative "../request_helper"
 
 RSpec.describe SoftValidationsController, type: :request do
   let(:params) { { case_log_id: case_log.id } }
   let(:url) { "/logs/#{case_log.id}/net-income/soft-validations" }
   let(:user) { FactoryBot.create(:user) }
 
+  before do
+    RequestHelper.stub_http_requests
+  end
+
   context "a not signed in user" do
     let(:case_log) { FactoryBot.create(:case_log, :in_progress) }
 
diff --git a/spec/views/case_log_index_view_spec.rb b/spec/views/case_log_index_view_spec.rb
index 17da18411..63f7dd29b 100644
--- a/spec/views/case_log_index_view_spec.rb
+++ b/spec/views/case_log_index_view_spec.rb
@@ -1,5 +1,11 @@
 require "rails_helper"
+require_relative "../request_helper"
+
 RSpec.describe "case_logs/index" do
+  before do
+    RequestHelper.stub_http_requests
+  end
+
   let(:in_progress_log) { FactoryBot.create(:case_log, :in_progress) }
   let(:completed_log) { FactoryBot.create(:case_log, :completed) }