diff --git a/app/Database/Migrations/2026-08-07-000801_AddAddressFieldsToReferMaster.php b/app/Database/Migrations/2026-08-07-000801_AddAddressFieldsToReferMaster.php
new file mode 100644
index 0000000..5e2fcdd
--- /dev/null
+++ b/app/Database/Migrations/2026-08-07-000801_AddAddressFieldsToReferMaster.php
@@ -0,0 +1,108 @@
+<?php
+
+namespace App\Database\Migrations;
+
+use CodeIgniter\Database\Migration;
+
+class AddAddressFieldsToReferMaster extends Migration
+{
+    public function up(): void
+    {
+        $table = 'refer_master';
+
+        if (! $this->hasTable($table)) {
+            return;
+        }
+
+        if (! $this->hasField($table, 'place')) {
+            $this->forge->addColumn($table, [
+                'place' => [
+                    'type'       => 'VARCHAR',
+                    'constraint' => 150,
+                    'null'       => true,
+                ],
+            ]);
+        }
+
+        if (! $this->hasField($table, 'city')) {
+            $this->forge->addColumn($table, [
+                'city' => [
+                    'type'       => 'VARCHAR',
+                    'constraint' => 100,
+                    'null'       => true,
+                ],
+            ]);
+        }
+
+        if (! $this->hasField($table, 'district')) {
+            $this->forge->addColumn($table, [
+                'district' => [
+                    'type'       => 'VARCHAR',
+                    'constraint' => 100,
+                    'null'       => true,
+                ],
+            ]);
+        }
+
+        if (! $this->hasField($table, 'state')) {
+            $this->forge->addColumn($table, [
+                'state' => [
+                    'type'       => 'VARCHAR',
+                    'constraint' => 100,
+                    'null'       => true,
+                ],
+            ]);
+        }
+    }
+
+    public function down(): void
+    {
+        $table = 'refer_master';
+
+        if (! $this->hasTable($table)) {
+            return;
+        }
+
+        if ($this->hasField($table, 'state')) {
+            $this->forge->dropColumn($table, 'state');
+        }
+
+        if ($this->hasField($table, 'district')) {
+            $this->forge->dropColumn($table, 'district');
+        }
+
+        if ($this->hasField($table, 'city')) {
+            $this->forge->dropColumn($table, 'city');
+        }
+
+        if ($this->hasField($table, 'place')) {
+            $this->forge->dropColumn($table, 'place');
+        }
+    }
+
+    private function hasTable(string $table): bool
+    {
+        try {
+            $rows = $this->db->query('SHOW TABLES LIKE ' . $this->db->escape($table))->getResultArray();
+            return ! empty($rows);
+        } catch (\Throwable $e) {
+            return false;
+        }
+    }
+
+    private function hasField(string $table, string $field): bool
+    {
+        if (! $this->hasTable($table)) {
+            return false;
+        }
+
+        try {
+            $safeTable = str_replace('`', '``', $table);
+            $sql = 'SHOW COLUMNS FROM `' . $safeTable . '` LIKE ' . $this->db->escape($field);
+            $rows = $this->db->query($sql)->getResultArray();
+            return ! empty($rows);
+        } catch (\Throwable $e) {
+            return false;
+        }
+    }
+}