diff --git a/serenity-model/src/main/java/net/thucydides/model/requirements/RootDirectory.java b/serenity-model/src/main/java/net/thucydides/model/requirements/RootDirectory.java
index fcba3fb988..3698e46d88 100644
--- a/serenity-model/src/main/java/net/thucydides/model/requirements/RootDirectory.java
+++ b/serenity-model/src/main/java/net/thucydides/model/requirements/RootDirectory.java
@@ -265,6 +265,23 @@ public Optional<Path> featuresOrStoriesRootDirectory() {
             URI serenityReqDir = new File(ThucydidesSystemProperty.SERENITY_REQUIREMENTS_DIR.from(environmentVariables)).toURI();
             return Optional.of(Paths.get(serenityReqDir));
         }
+
+        // The Gradle plugin's `AggregateTask` wires its `requirementsBaseDir` DSL field
+        // into `serenity.test.requirements.basedir`, but does not mirror it into
+        // `serenity.requirements.dir`. For multi-module Gradle builds the working
+        // directory during aggregation is the root project (not the sub-module owning
+        // the feature files), so the classpath / resource scans below do not find the
+        // feature tree. Honouring the `basedir` property here makes the existing
+        // plugin wiring work without requiring callers to double-configure the same
+        // path under two property names.
+        if (ThucydidesSystemProperty.SERENITY_TEST_REQUIREMENTS_BASEDIR.isDefinedIn(environmentVariables)) {
+            File basedir = new File(
+                    ThucydidesSystemProperty.SERENITY_TEST_REQUIREMENTS_BASEDIR.from(environmentVariables));
+            if (basedir.isDirectory()) {
+                return Optional.of(basedir.toPath());
+            }
+        }
+
         List<File> resourceDirectories = getResourceDirectories(Paths.get(relativeRoot), environmentVariables);
         List<File> resourceDirectoriesByIncreasingDepth = resourceDirectories.stream()
                 .sorted(Comparator.comparingInt(dir -> dir.getAbsolutePath().length()))
diff --git a/serenity-model/src/test/java/net/thucydides/model/requirements/WhenFindingTheRootDirectoryForFeatureFiles.java b/serenity-model/src/test/java/net/thucydides/model/requirements/WhenFindingTheRootDirectoryForFeatureFiles.java
index 6c080358bb..b608f9f40b 100644
--- a/serenity-model/src/test/java/net/thucydides/model/requirements/WhenFindingTheRootDirectoryForFeatureFiles.java
+++ b/serenity-model/src/test/java/net/thucydides/model/requirements/WhenFindingTheRootDirectoryForFeatureFiles.java
@@ -3,10 +3,17 @@
 import net.thucydides.model.environment.MockEnvironmentVariables;
 import net.thucydides.model.util.EnvironmentVariables;
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.io.TempDir;
 
 import java.io.File;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.Optional;
 import java.util.Set;
 
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
 public class WhenFindingTheRootDirectoryForFeatureFiles {
 
     EnvironmentVariables environmentVariables = new MockEnvironmentVariables();
@@ -24,4 +31,54 @@ void withADefinedProjectDirectory() {
         RootDirectory rootDirectory = new RootDirectory(environmentVariables,featureDirectory);
         Set<String> directoryPaths = rootDirectory.getRootDirectoryPaths();
     }
+
+    @Test
+    void featuresOrStoriesRootDirectoryFallsBackToTestRequirementsBasedir(@TempDir Path tempDir) throws Exception {
+        // Simulates the Gradle plugin's AggregateTask wiring: `requirementsBaseDir` is set,
+        // but `serenity.requirements.dir` is not. featuresOrStoriesRootDirectory() should
+        // pick up the basedir instead of falling through to the working-directory scan
+        // (which misfires in multi-module Gradle builds because user.dir == root project).
+        Path featuresDir = tempDir.resolve("features");
+        Files.createDirectories(featuresDir);
+
+        environmentVariables.setProperty("serenity.test.requirements.basedir", featuresDir.toString());
+
+        RootDirectory rootDirectory = new RootDirectory(environmentVariables, ".");
+        Optional<Path> resolved = rootDirectory.featuresOrStoriesRootDirectory();
+
+        assertTrue(resolved.isPresent(), "Expected featuresOrStoriesRootDirectory() to honour serenity.test.requirements.basedir");
+        assertEquals(featuresDir.toAbsolutePath(), resolved.get().toAbsolutePath());
+    }
+
+    @Test
+    void serenityRequirementsDirTakesPrecedenceOverBasedir(@TempDir Path tempDir) throws Exception {
+        // When both properties are set, the existing behaviour (SERENITY_REQUIREMENTS_DIR wins)
+        // must be preserved — the new fallback must not regress that order.
+        Path primary = tempDir.resolve("primary/features");
+        Path fallback = tempDir.resolve("fallback/features");
+        Files.createDirectories(primary);
+        Files.createDirectories(fallback);
+
+        environmentVariables.setProperty("serenity.requirements.dir", primary.toString());
+        environmentVariables.setProperty("serenity.test.requirements.basedir", fallback.toString());
+
+        Optional<Path> resolved = new RootDirectory(environmentVariables, ".").featuresOrStoriesRootDirectory();
+
+        assertTrue(resolved.isPresent());
+        assertEquals(primary.toAbsolutePath(), resolved.get().toAbsolutePath());
+    }
+
+    @Test
+    void basedirFallbackIgnoresNonExistentPaths(@TempDir Path tempDir) {
+        // Guard against a stale basedir value masking the classpath/working-dir fallback.
+        String nonExistent = tempDir.resolve("does-not-exist").toString();
+        environmentVariables.setProperty("serenity.test.requirements.basedir", nonExistent);
+
+        Optional<Path> resolved = new RootDirectory(environmentVariables, ".").featuresOrStoriesRootDirectory();
+
+        // The fallback must not hand back a path that does not exist — callers treat the
+        // Optional.of(...) result as authoritative.
+        resolved.ifPresent(path -> assertTrue(path.toFile().exists(),
+                "featuresOrStoriesRootDirectory() should not return a non-existent basedir: " + path));
+    }
 }