diff --git a/app/models/log.rb b/app/models/log.rb
index d55289997..b249e2816 100644
--- a/app/models/log.rb
+++ b/app/models/log.rb
@@ -57,7 +57,7 @@ class Log < ApplicationRecord
   scope :filter_by_owning_organisation_text_search, ->(param, _user) { where(owning_organisation: Organisation.search_by(param)) }
   scope :filter_by_managing_organisation_text_search, ->(param, _user) { where(managing_organisation: Organisation.search_by(param)) }
 
-  attr_accessor :skip_update_status, :skip_update_uprn_confirmed, :select_best_address_match, :skip_dpo_validation
+  attr_accessor :skip_update_status, :skip_update_uprn_confirmed, :select_best_address_match, :skip_dpo_validation, :bu_newbuilds_address_entry
 
   delegate :present?, to: :address_options, prefix: true
 
@@ -102,21 +102,23 @@ class Log < ApplicationRecord
         end
       end
 
-      if uprn_selection == "uprn_not_listed"
-        self.uprn_known = 0
-        self.uprn_confirmed = nil
-        self.uprn = nil
-        self.address_line1 = address_line1_input
-        self.address_line2 = nil
-        self.town_or_city = nil
-        self.county = nil
-        self.postcode_full = postcode_full_input if postcode_full_input.match(POSTCODE_REGEXP)
-        process_postcode_changes!
-      else
-        self.uprn = uprn_selection
-        self.uprn_confirmed = 1
-        self.skip_update_uprn_confirmed = true
-        process_uprn_change!
+      unless bu_newbuilds_address_entry
+        if uprn_selection == "uprn_not_listed"
+          self.uprn_known = 0
+          self.uprn_confirmed = nil
+          self.uprn = nil
+          self.address_line1 = address_line1_input
+          self.address_line2 = nil
+          self.town_or_city = nil
+          self.county = nil
+          self.postcode_full = postcode_full_input if postcode_full_input.match(POSTCODE_REGEXP)
+          process_postcode_changes!
+        else
+          self.uprn = uprn_selection
+          self.uprn_confirmed = 1
+          self.skip_update_uprn_confirmed = true
+          process_uprn_change!
+        end
       end
     end
   end
diff --git a/app/services/bulk_upload/lettings/year2024/row_parser.rb b/app/services/bulk_upload/lettings/year2024/row_parser.rb
index 3f5227c44..5fc9ae9d7 100644
--- a/app/services/bulk_upload/lettings/year2024/row_parser.rb
+++ b/app/services/bulk_upload/lettings/year2024/row_parser.rb
@@ -438,7 +438,7 @@ class BulkUpload::Lettings::Year2024::RowParser
   validate :validate_assigned_to_when_support, on: :after_log
   validate :validate_all_charges_given, on: :after_log, if: proc { is_carehome.zero? }
 
-  validate :validate_address_option_found, on: :after_log, unless: -> { supported_housing? }
+  validate :validate_address_option_found, on: :after_log, unless: -> { supported_housing? || rsnvac == 15 }
   validate :validate_uprn_exists_if_any_key_address_fields_are_blank, on: :after_log, unless: -> { supported_housing? }
   validate :validate_address_fields, on: :after_log, unless: -> { supported_housing? }
 
@@ -1340,7 +1340,9 @@ private
 
       attributes["address_line1_input"] = address_line1_input
       attributes["postcode_full_input"] = postcode_full
-      attributes["select_best_address_match"] = true if field_16.blank?
+      attributes["select_best_address_match"] = true if field_16.blank? && rsnvac != 15
+      attributes["uprn_selection"] = "uprn_not_listed" if rsnvac == 15
+      attributes["bu_newbuilds_address_entry"] = true if field_16.blank? && rsnvac == 15
     end
 
     attributes
diff --git a/spec/services/bulk_upload/lettings/year2024/row_parser_spec.rb b/spec/services/bulk_upload/lettings/year2024/row_parser_spec.rb
index 33ab390f4..46884a78b 100644
--- a/spec/services/bulk_upload/lettings/year2024/row_parser_spec.rb
+++ b/spec/services/bulk_upload/lettings/year2024/row_parser_spec.rb
@@ -1767,6 +1767,36 @@ RSpec.describe BulkUpload::Lettings::Year2024::RowParser do
             end
           end
         end
+
+        context "when it is a new build" do
+          let(:attributes) { setup_section_params.merge({ 
+            field_24: "15",
+            field_17: "Address line 1",
+            field_18: "Address line 2",
+            field_19: "Town or city",
+            field_20: "County",
+            field_21: "DS1",
+            field_22: "1AA",
+            field_23: "E09000008",
+            }) }
+
+          it "sets manual address entry fields" do
+            stub_request(:get, /api\.postcodes\.io/)
+            .to_return(status: 200, body: "{\"status\":200,\"result\":{}", headers: {})
+      
+            parser.valid?
+            expect(parser.log.select_best_address_match).to be_nil
+            expect(parser.log.uprn_selection).to eq("uprn_not_listed")
+            expect(parser.log.uprn_known).to be(0)
+            expect(parser.log.uprn_confirmed).to be_nil
+            expect(parser.log.address_line1).to eq("Address line 1")
+            expect(parser.log.address_line2).to eq("Address line 2")
+            expect(parser.log.town_or_city).to eq("Town or city")
+            expect(parser.log.county).to eq("County")
+            expect(parser.log.postcode_full).to eq("DS1 1AA")
+            expect(parser.log.la).to eq("E09000008")
+          end
+        end
       end
 
       context "with a supported housing log" do