diff --git a/migrations/Version20260427154952.php b/migrations/Version20260427154952.php
new file mode 100644
index 0000000..f63134d
--- /dev/null
+++ b/migrations/Version20260427154952.php
@@ -0,0 +1,35 @@
+<?php
+
+declare(strict_types=1);
+
+namespace DoctrineMigrations;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+/**
+ * Auto-generated Migration: Please modify to your needs!
+ */
+final class Version20260427154952 extends AbstractMigration
+{
+    public function getDescription(): string
+    {
+        return 'Ajout de la colonne display_order sur building et seed des valeurs par code.';
+    }
+
+    public function up(Schema $schema): void
+    {
+        $this->addSql('ALTER TABLE building ADD display_order INT DEFAULT NULL');
+
+        $this->addSql("UPDATE building SET display_order = 1 WHERE code = 'B3'");
+        $this->addSql("UPDATE building SET display_order = 2 WHERE code = 'B2'");
+        $this->addSql("UPDATE building SET display_order = 3 WHERE code = 'B1'");
+        $this->addSql("UPDATE building SET display_order = 4 WHERE code = 'ZT'");
+    }
+
+    public function down(Schema $schema): void
+    {
+        // this down() migration is auto-generated, please modify it to your needs
+        $this->addSql('ALTER TABLE building DROP display_order');
+    }
+}
diff --git a/src/Entity/Building.php b/src/Entity/Building.php
index 98863cd..e5ace97 100644
--- a/src/Entity/Building.php
+++ b/src/Entity/Building.php
@@ -16,6 +16,7 @@ use Symfony\Component\Serializer\Attribute\SerializedName;
 #[ORM\Entity]
 #[ORM\Table(name: 'building')]
 #[ApiResource(
+    order: ['displayOrder' => 'ASC', 'id' => 'ASC'],
     operations: [
         new Get(
             requirements: ['id' => '\d+'],
@@ -43,6 +44,10 @@ class Building
     #[Groups(['building:read', 'building:summary', 'reception:read'])]
     private string $code = '';
 
+    #[ORM\Column(name: 'display_order', type: 'integer', nullable: true)]
+    #[Groups(['building:read', 'building:summary'])]
+    private ?int $displayOrder = null;
+
     /**
      * @var Collection<int, Reception>
      */
@@ -101,6 +106,18 @@ class Building
         return $this;
     }
 
+    public function getDisplayOrder(): ?int
+    {
+        return $this->displayOrder;
+    }
+
+    public function setDisplayOrder(?int $displayOrder): self
+    {
+        $this->displayOrder = $displayOrder;
+
+        return $this;
+    }
+
     /**
      * @return Collection<int, Reception>
      */