diff --git a/app/Kintone/Models/DropDown/SeasonTicketContractPlan/VehicleType.php b/app/Kintone/Models/DropDown/SeasonTicketContractPlan/VehicleType.php
new file mode 100644
index 0000000..2d51a82
--- /dev/null
+++ b/app/Kintone/Models/DropDown/SeasonTicketContractPlan/VehicleType.php
@@ -0,0 +1,28 @@
+<?php
+
+namespace App\Kintone\Models\DropDown\SeasonTicketContractPlan;
+
+abstract class VehicleType
+{
+    const V1_普通車 = "普通車";
+    const V2_軽自動車 = "軽自動車";
+    const V3_大型自動車 = "大型自動車";
+    const V4_中型車 = "中型車";
+    const V5_自転車 = "自転車";
+    const V6_原付 = "原付";
+    const V7_バイク = "バイク";
+    const V8_小型バイク = "小型バイク";
+    const V9_中型バイク = "中型バイク";
+    const V10_大型バイク = "大型バイク";
+    const V11_小型中型バイク = "小型中型バイク";
+    const V12_中型大型バイク = "中型大型バイク";
+    const V13_ナイトカード = "ナイトカード";
+    const V14_普通車_1割引 = "普通車_1割引";
+    const V15_軽自動車_1割引 = "軽自動車_1割引";
+    const V16_中型車_1割引 = "中型車_1割引";
+    const V17_大型自動車_1割引 = "大型自動車_1割引";
+    const V18_普通車_特別割 = "普通車_特別割";
+    const V19_軽自動車_特別割 = "軽自動車_特別割";
+    const V20_中型車_特別割 = "中型車_特別割";
+    const V21_大型自動車_特別割 = "大型自動車_特別割";
+}
diff --git a/app/Kintone/Models/SeasonTicketContract.php b/app/Kintone/Models/SeasonTicketContract.php
index e4594c8..7a2cb73 100644
--- a/app/Kintone/Models/SeasonTicketContract.php
+++ b/app/Kintone/Models/SeasonTicketContract.php
@@ -2,9 +2,9 @@
 
 namespace App\Kintone\Models;
 
+use App\Kintone\Models\DropDown\SeasonTicketContractPlan\VehicleType;
 use App\Util\DateUtil;
 use Illuminate\Support\Carbon;
-use LogicException;
 
 /**
  * アプリ名 車室情報管理
@@ -73,21 +73,41 @@ class SeasonTicketContract extends KintoneModel
         self::FIELD_OTHER_LICENSE_IMAGES_UPLOAD_DATETIME => 'other_license_images_upload_datetime',
     ];
 
+    private ?SeasonTicketContractPlan $plan = null;
+    private ?Parking $parking = null;
+    private ?Customer $customer = null;
+
     protected function toArrayCustom(): array
     {
         return [
             'can_some_apply' => $this->canSomeApply(),
+            'can_parking_certificate_apply' => $this->canParkingCertificateApply(),
+            'can_change_plan_apply' => $this->canChangePlanApply(),
         ];
     }
 
     public function getParking(): Parking
     {
-        return Parking::findByParkingName($this->parkingName);
+        if ($this->parking === null) {
+            $this->parking =  Parking::findByParkingName($this->parkingName);
+        }
+        return $this->parking;
     }
 
     public function getCustomer(): Customer
     {
-        return Customer::findByCustomerCode($this->customerCode);
+        if ($this->customer === null) {
+            $this->customer =  Customer::findByCustomerCode($this->customerCode);
+        }
+        return $this->customer;
+    }
+
+    public function getPlan(): SeasonTicketContractPlan
+    {
+        if ($this->plan === null) {
+            $this->plan = SeasonTicketContractPlan::findByName($this->planName);
+        }
+        return $this->plan;
     }
 
     /**
@@ -99,4 +119,24 @@ class SeasonTicketContract extends KintoneModel
     {
         return $this->contractEndDate instanceof Carbon ?  DateUtil::now() <=  $this->contractEndDate : false;
     }
+
+    public function canParkingCertificateApply(): bool
+    {
+        return !in_array($this->getPlan()->vehicleType, [
+            VehicleType::V5_自転車,
+            VehicleType::V6_原付,
+            VehicleType::V7_バイク,
+            VehicleType::V8_小型バイク,
+            VehicleType::V9_中型バイク,
+            VehicleType::V10_大型バイク,
+            VehicleType::V11_小型中型バイク,
+            VehicleType::V12_中型大型バイク,
+            VehicleType::V13_ナイトカード,
+        ]);
+    }
+
+    public function canChangePlanApply(): bool
+    {
+        return $this->getPlan()->canChangePlanNameList->isNotEmpty();
+    }
 }