diff --git a/app/code/Magento/Customer/Model/Address.php b/app/code/Magento/Customer/Model/Address.php
index 191e9ab3fac..0dd2864a41e 100644
--- a/app/code/Magento/Customer/Model/Address.php
+++ b/app/code/Magento/Customer/Model/Address.php
@@ -13,6 +13,7 @@
 use Magento\Customer\Model\Address\AbstractAddress\RegionModelsCache;
 use Magento\Customer\Model\Address\CompositeValidator;
 use Magento\Framework\Indexer\StateInterface;
+use Magento\Customer\Helper\Address as AddressHelper;
 
 /**
  * Customer address model
@@ -80,6 +81,7 @@ class Address extends \Magento\Customer\Model\Address\AbstractAddress
      * @param CompositeValidator|null $compositeValidator
      * @param CountryModelsCache|null $countryModelsCache
      * @param RegionModelsCache|null $regionModelsCache
+     * @param AddressHelper|null $addressHelper
      *
      * @SuppressWarnings(PHPMD.ExcessiveParameterList)
      */
@@ -106,6 +108,7 @@ public function __construct(
         ?CompositeValidator $compositeValidator = null,
         ?CountryModelsCache $countryModelsCache = null,
         ?RegionModelsCache $regionModelsCache = null,
+        ?AddressHelper $addressHelper = null
     ) {
         $this->dataProcessor = $dataProcessor;
         $this->_customerFactory = $customerFactory;
@@ -130,6 +133,7 @@ public function __construct(
             $compositeValidator,
             $countryModelsCache,
             $regionModelsCache,
+            $addressHelper
         );
     }
 
diff --git a/app/code/Magento/Customer/Model/Address/AbstractAddress.php b/app/code/Magento/Customer/Model/Address/AbstractAddress.php
index 51999970d2f..966e306e176 100644
--- a/app/code/Magento/Customer/Model/Address/AbstractAddress.php
+++ b/app/code/Magento/Customer/Model/Address/AbstractAddress.php
@@ -17,6 +17,7 @@
 use Magento\Framework\App\ObjectManager;
 use Magento\Framework\Model\AbstractExtensibleModel;
 use Magento\Framework\ObjectManager\ResetAfterRequestInterface;
+use Magento\Customer\Helper\Address as AddressHelper;
 
 /**
  * Address abstract model
@@ -146,6 +147,11 @@ class AbstractAddress extends AbstractExtensibleModel implements AddressModelInt
      */
     private array $regionIdCountry = [];
 
+    /**
+     * @var AddressHelper|null
+     */
+    protected ?AddressHelper $addressHelper;
+
     /**
      * @param \Magento\Framework\Model\Context $context
      * @param \Magento\Framework\Registry $registry
@@ -166,6 +172,7 @@ class AbstractAddress extends AbstractExtensibleModel implements AddressModelInt
      * @param CompositeValidator $compositeValidator
      * @param CountryModelsCache|null $countryModelsCache
      * @param RegionModelsCache|null $regionModelsCache
+     * @param AddressHelper|null $addressHelper
      *
      * @SuppressWarnings(PHPMD.ExcessiveParameterList)
      */
@@ -189,6 +196,7 @@ public function __construct(
         ?CompositeValidator $compositeValidator = null,
         ?CountryModelsCache $countryModelsCache = null,
         ?RegionModelsCache $regionModelsCache = null,
+        ?AddressHelper $addressHelper = null
     ) {
         $this->_directoryData = $directoryData;
         $data = $this->_implodeArrayField($data);
@@ -206,6 +214,8 @@ public function __construct(
             ->get(CountryModelsCache::class);
         $this->regionModelsCache = $regionModelsCache ?: ObjectManager::getInstance()
             ->get(RegionModelsCache::class);
+        $this->addressHelper = $addressHelper ?: ObjectManager::getInstance()
+            ->get(AddressHelper::class);
         parent::__construct(
             $context,
             $registry,
@@ -242,6 +252,8 @@ public function getName()
 
     /**
      * Retrieve street field of an address
+     * Honour current configured street lines, and convert
+     * legacy data to match
      *
      * @return string[]
      */
@@ -250,7 +262,11 @@ public function getStreet()
         if (is_array($this->getStreetFull())) {
             return $this->getStreetFull();
         }
-        return explode("\n", $this->getStreetFull());
+        $maxAllowedLineCount = $this->addressHelper->getStreetLines() ?? 2;
+        $lines = explode("\n", $this->getStreetFull());
+        $lines = $this->addressHelper->convertStreetLines($lines, $maxAllowedLineCount);
+        $this->setStreetFull(implode("\n", $lines));
+        return $lines;
     }
 
     /**
diff --git a/app/code/Magento/Customer/Test/Unit/Model/Address/AbstractAddressTest.php b/app/code/Magento/Customer/Test/Unit/Model/Address/AbstractAddressTest.php
index 7765634d73a..fe470812bbc 100644
--- a/app/code/Magento/Customer/Test/Unit/Model/Address/AbstractAddressTest.php
+++ b/app/code/Magento/Customer/Test/Unit/Model/Address/AbstractAddressTest.php
@@ -70,6 +70,11 @@ class AbstractAddressTest extends TestCase
     /** @var CompositeValidator|MockObject  */
     private $compositeValidatorMock;
 
+    /**
+     * @var \Magento\Customer\Helper\Address|MockObject
+     */
+    private $addressHelperMock;
+
     protected function setUp(): void
     {
         $this->contextMock = $this->createMock(Context::class);
@@ -491,6 +496,89 @@ function ($data) {
         );
     }
 
+    public function testGetStreetWithTwoLines()
+    {
+        // Create a partial mock for AddressHelper
+        $this->addressHelperMock = $this->getMockBuilder(\Magento\Customer\Helper\Address::class)
+            ->disableOriginalConstructor()
+            ->onlyMethods(['getStreetLines']) // Mock only getStreetLines, keep the real convertStreetLines
+            ->getMock();
+
+        // Mock getStreetLines to return 2 by default
+        $this->addressHelperMock->method('getStreetLines')->willReturn(2);
+
+        // Use reflection to inject the partial mock into the model
+        $reflection = new \ReflectionClass($this->model);
+        $property = $reflection->getProperty('addressHelper');
+        $property->setAccessible(true);
+        $property->setValue($this->model, $this->addressHelperMock);
+
+        $this->addressHelperMock->method('getStreetLines')->willReturn(2);
+        $streetData = ["Street Line 1", "Street Line 2", "Street Line 3", "Street Line 4"];
+        $this->model->setData('street', $streetData);
+
+        // Call getStreet() which should internally call convertStreetLines()
+        $result = $this->model->getStreet();
+
+        // Assert that empty and whitespace-only lines are removed by convertStreetLines
+        $this->assertEquals(["Street Line 1 Street Line 2", "Street Line 3 Street Line 4"], $result);
+    }
+
+    public function testGetStreetWithThreeLines()
+    {
+        // Create a partial mock for AddressHelper
+        $this->addressHelperMock = $this->getMockBuilder(\Magento\Customer\Helper\Address::class)
+            ->disableOriginalConstructor()
+            ->onlyMethods(['getStreetLines']) // Mock only getStreetLines, keep the real convertStreetLines
+            ->getMock();
+
+        // Mock getStreetLines to return 2 by default
+        $this->addressHelperMock->method('getStreetLines')->willReturn(3);
+
+        // Use reflection to inject the partial mock into the model
+        $reflection = new \ReflectionClass($this->model);
+        $property = $reflection->getProperty('addressHelper');
+        $property->setAccessible(true);
+        $property->setValue($this->model, $this->addressHelperMock);
+
+        $this->addressHelperMock->method('getStreetLines')->willReturn(3);
+        $streetData = ["Street Line 1", "Street Line 2", "Street Line 3", "Street Line 4"];
+        $this->model->setData('street', $streetData);
+
+        // Call getStreet() which should internally call convertStreetLines()
+        $result = $this->model->getStreet();
+
+        // Assert that empty and whitespace-only lines are removed by convertStreetLines
+        $this->assertEquals(["Street Line 1 Street Line 2","Street Line 3","Street Line 4"], $result);
+    }
+
+    public function testGetStreetWithOneLine()
+    {
+        // Create a partial mock for AddressHelper
+        $this->addressHelperMock = $this->getMockBuilder(\Magento\Customer\Helper\Address::class)
+            ->disableOriginalConstructor()
+            ->onlyMethods(['getStreetLines']) // Mock only getStreetLines, keep the real convertStreetLines
+            ->getMock();
+
+        // Mock getStreetLines to return 2 by default
+        $this->addressHelperMock->method('getStreetLines')->willReturn(1);
+
+        // Use reflection to inject the partial mock into the model
+        $reflection = new \ReflectionClass($this->model);
+        $property = $reflection->getProperty('addressHelper');
+        $property->setAccessible(true);
+        $property->setValue($this->model, $this->addressHelperMock);
+
+        $streetData = ["Street Line 1", "Street Line 2", "Street Line 3", "Street Line 4"];
+        $this->model->setData('street', $streetData);
+
+        // Call getStreet() which should internally call convertStreetLines()
+        $result = $this->model->getStreet();
+
+        // Assert that empty and whitespace-only lines are removed by convertStreetLines
+        $this->assertEquals(["Street Line 1 Street Line 2 Street Line 3 Street Line 4"], $result);
+    }
+
     protected function tearDown(): void
     {
         $this->objectManager->setBackwardCompatibleProperty(
diff --git a/app/code/Magento/Customer/etc/di.xml b/app/code/Magento/Customer/etc/di.xml
index 04dee8d9f6b..db30197e76d 100644
--- a/app/code/Magento/Customer/etc/di.xml
+++ b/app/code/Magento/Customer/etc/di.xml
@@ -88,6 +88,7 @@
     <type name="Magento\Customer\Helper\Address">
         <arguments>
             <argument name="addressConfig" xsi:type="object">Magento\Customer\Model\Address\Config\Proxy</argument>
+            <argument name="addressHelper" xsi:type="object">Magento\Customer\Helper\Address</argument>
         </arguments>
     </type>
     <type name="Magento\Framework\App\Http\Context">
@@ -593,4 +594,9 @@
                 type="Magento\Customer\Plugin\AsyncRequestCustomerGroupAuthorization"
         />
     </type>
+    <type name="Magento\Customer\Model\Address\AbstractAddress">
+        <arguments>
+            <argument name="addressHelper" xsi:type="object">Magento\Customer\Helper\Address</argument>
+        </arguments>
+    </type>
 </config>
diff --git a/app/code/Magento/Quote/Model/Quote/Address.php b/app/code/Magento/Quote/Model/Quote/Address.php
index 082404de261..beb9f270c2c 100644
--- a/app/code/Magento/Quote/Model/Quote/Address.php
+++ b/app/code/Magento/Quote/Model/Quote/Address.php
@@ -46,6 +46,7 @@
 use Magento\Store\Api\Data\StoreInterface;
 use Magento\Store\Model\ScopeInterface;
 use Magento\Store\Model\StoreManagerInterface;
+use Magento\Customer\Helper\Address as AddressHelper;
 
 /**
  * Sales Quote address model
@@ -341,6 +342,7 @@ class Address extends AbstractAddress implements
      * @param CompositeValidator|null $compositeValidator
      * @param CountryModelsCache|null $countryModelsCache
      * @param RegionModelsCache|null $regionModelsCache
+     * @param AddressHelper|null $addressHelper
      *
      * @SuppressWarnings(PHPMD.ExcessiveParameterList)
      */
@@ -382,6 +384,7 @@ public function __construct(
         ?CompositeValidator $compositeValidator = null,
         ?CountryModelsCache $countryModelsCache = null,
         ?RegionModelsCache $regionModelsCache = null,
+        ?AddressHelper $addressHelper = null
     ) {
         $this->_scopeConfig = $scopeConfig;
         $this->_addressItemFactory = $addressItemFactory;
@@ -422,6 +425,7 @@ public function __construct(
             $compositeValidator,
             $countryModelsCache,
             $regionModelsCache,
+            $addressHelper
         );
     }
 
diff --git a/app/code/Magento/Quote/etc/di.xml b/app/code/Magento/Quote/etc/di.xml
index 7693cbdc2ff..6de73a11994 100644
--- a/app/code/Magento/Quote/etc/di.xml
+++ b/app/code/Magento/Quote/etc/di.xml
@@ -63,6 +63,7 @@
     <type name="Magento\Quote\Model\Quote\Address">
         <arguments>
             <argument name="addressConfig" xsi:type="object">Magento\Customer\Model\Address\Config\Proxy</argument>
+            <argument name="addressHelper" xsi:type="object">Magento\Customer\Helper\Address</argument>
         </arguments>
     </type>
     <virtualType name="QuoteAddressRelationsComposite" type="Magento\Framework\Model\ResourceModel\Db\VersionControl\RelationComposite">