diff --git a/packages/spacecat-shared-data-access/src/models/organization.js b/packages/spacecat-shared-data-access/src/models/organization.js
index 693bfba84..efcaf30c8 100644
--- a/packages/spacecat-shared-data-access/src/models/organization.js
+++ b/packages/spacecat-shared-data-access/src/models/organization.js
@@ -15,6 +15,8 @@ import { hasText, isObject } from '@adobe/spacecat-shared-utils';
 import { Base } from './base.js';
 import { Config, DEFAULT_CONFIG } from './site/config.js';
 
+export const DEFAULT_ORGANIZATION_ID = 'default';
+
 /**
  * Creates a new Organization.
  *
diff --git a/packages/spacecat-shared-data-access/src/models/site.js b/packages/spacecat-shared-data-access/src/models/site.js
index 3ddb32fea..08472e9cb 100644
--- a/packages/spacecat-shared-data-access/src/models/site.js
+++ b/packages/spacecat-shared-data-access/src/models/site.js
@@ -10,11 +10,12 @@
  * governing permissions and limitations under the License.
  */
 
-import { isObject, isValidUrl } from '@adobe/spacecat-shared-utils';
+import { hasText, isObject, isValidUrl } from '@adobe/spacecat-shared-utils';
 
 import { Base } from './base.js';
 import AuditConfig from './site/audit-config.js';
 import { Config, DEFAULT_CONFIG } from './site/config.js';
+import { DEFAULT_ORGANIZATION_ID } from './organization.js';
 
 export const DELIVERY_TYPES = {
   AEM_CS: 'aem_cs',
@@ -162,6 +163,10 @@ export const createSite = (data) => {
     throw new Error('Base URL must be a valid URL');
   }
 
+  if (!hasText(newState.organizationId)) {
+    newState.organizationId = DEFAULT_ORGANIZATION_ID;
+  }
+
   newState.deliveryType = newState.deliveryType || DEFAULT_DELIVERY_TYPE;
   if (!Object.values(DELIVERY_TYPES).includes(newState.deliveryType)) {
     throw new Error(`Invalid delivery type: ${newState.deliveryType}`);
diff --git a/packages/spacecat-shared-data-access/test/unit/models/site.test.js b/packages/spacecat-shared-data-access/test/unit/models/site.test.js
index f8f429d24..c2be0d298 100644
--- a/packages/spacecat-shared-data-access/test/unit/models/site.test.js
+++ b/packages/spacecat-shared-data-access/test/unit/models/site.test.js
@@ -46,6 +46,11 @@ describe('Site Model Tests', () => {
       expect(site.getBaseURL()).to.equal(validData.baseURL);
     });
 
+    it('creates a site with default organization id', () => {
+      const site = createSite({ ...validData, organizationId: undefined });
+      expect(site.getOrganizationId()).to.equal('default');
+    });
+
     it('creates a site with default auditConfig when none provided', () => {
       const site = createSite({ ...validData });
       const auditConfig = site.getAuditConfig();