diff --git a/InvenTree/build/migrations/0043_build_project_code.py b/InvenTree/build/migrations/0043_build_project_code.py
new file mode 100644
index 0000000000..e436c61f41
--- /dev/null
+++ b/InvenTree/build/migrations/0043_build_project_code.py
@@ -0,0 +1,20 @@
+# Generated by Django 3.2.19 on 2023-05-13 12:04
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('common', '0019_projectcode_metadata'),
+        ('build', '0042_alter_build_notes'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='build',
+            name='project_code',
+            field=models.ForeignKey(blank=True, help_text='Project code for this build order', null=True, on_delete=django.db.models.deletion.SET_NULL, to='common.projectcode', verbose_name='Project Code'),
+        ),
+    ]
diff --git a/InvenTree/build/models.py b/InvenTree/build/models.py
index dcb31aa0e6..c207cc481f 100644
--- a/InvenTree/build/models.py
+++ b/InvenTree/build/models.py
@@ -61,6 +61,7 @@ class Build(MPTTModel, InvenTree.models.InvenTreeBarcodeMixin, InvenTree.models.
         issued_by: User that issued the build
         responsible: User (or group) responsible for completing the build
         priority: Priority of the build
+        project_code: Reference to ProjectCode instance
     """
 
     class Meta:
@@ -297,6 +298,14 @@ class Build(MPTTModel, InvenTree.models.InvenTreeBarcodeMixin, InvenTree.models.
         help_text=_('Priority of this build order')
     )
 
+    project_code = models.ForeignKey(
+        'common.ProjectCode',
+        on_delete=models.SET_NULL,
+        blank=True, null=True,
+        verbose_name=_('Project Code'),
+        help_text=_('Project code for this build order'),
+    )
+
     def sub_builds(self, cascade=True):
         """Return all Build Order objects under this one."""
         if cascade: