diff --git a/api/src/openapi/schemas/survey.ts b/api/src/openapi/schemas/survey.ts
index 2969919818..51b61d27f2 100644
--- a/api/src/openapi/schemas/survey.ts
+++ b/api/src/openapi/schemas/survey.ts
@@ -507,7 +507,8 @@ export const surveyBlockSchema: OpenAPIV3.SchemaObject = {
     },
     geojson: {
       description: 'Geojson',
-      type: 'object'
+      type: 'object',
+      nullable: true
     },
     sample_block_count: {
       description: 'Sample block count',
diff --git a/api/src/repositories/survey-block-repository.ts b/api/src/repositories/survey-block-repository.ts
index 0d9f37f3fc..863d3e44c0 100644
--- a/api/src/repositories/survey-block-repository.ts
+++ b/api/src/repositories/survey-block-repository.ts
@@ -19,7 +19,7 @@ export const SurveyBlockRecord = z.object({
   survey_id: z.number(),
   name: z.string(),
   description: z.string(),
-  geojson: z.any(),
+  geojson: z.any().nullable(),
   revision_count: z.number()
 });
 export type SurveyBlockRecord = z.infer<typeof SurveyBlockRecord>;
diff --git a/app/src/interfaces/useSurveyApi.interface.ts b/app/src/interfaces/useSurveyApi.interface.ts
index 5ac2daf906..28c0958d07 100644
--- a/app/src/interfaces/useSurveyApi.interface.ts
+++ b/app/src/interfaces/useSurveyApi.interface.ts
@@ -140,7 +140,7 @@ export interface IGetSurveyBlock {
   name: string;
   description: string;
   revision_count: number;
-  geojson: Feature;
+  geojson: Feature | null;
   sample_block_count: number;
 }
 
diff --git a/database/src/seeds/03_basic_project_survey_setup.ts b/database/src/seeds/03_basic_project_survey_setup.ts
index 89eef14992..efcf50b1bd 100644
--- a/database/src/seeds/03_basic_project_survey_setup.ts
+++ b/database/src/seeds/03_basic_project_survey_setup.ts
@@ -92,6 +92,7 @@ export async function seed(knex: Knex): Promise<void> {
           ${insertMethodTechnique(surveyId)}
           ${insertSurveySamplingMethodData(surveyId)}
           ${insertSurveySamplePeriodData(surveyId)}
+          ${insertSurveyBlockData(surveyId)}
         `);
 
         // Insert regions into surveys
@@ -182,6 +183,19 @@ const insertSurveyParticipationData = (surveyId: number) => `
   ;
 `;
 
+const insertSurveyBlockData = (surveyId: number) => `
+  INSERT into survey_block
+    ( survey_id, name, description, geojson )
+  VALUES
+    (
+      ${surveyId},
+      '${faker.lorem.words(2)}',
+      '${faker.lorem.words(10)}',
+      NULL
+    )
+  ;
+`;
+
 /**
  * SQL to insert Survey Proprietor data
  *