diff --git a/lib/init-action.js b/lib/init-action.js
index 507a76cc0..ad82159e7 100644
--- a/lib/init-action.js
+++ b/lib/init-action.js
@@ -106228,7 +106228,7 @@ async function runnerSupportsOverlayAnalysis(diskUsage, ramInput, logger, useV2R
   }
   return true;
 }
-async function getOverlayDatabaseMode(codeql, features, languages, sourceRoot, buildMode, ramInput, codeScanningConfig, gitVersion, logger) {
+async function getOverlayDatabaseMode(codeql, features, languages, sourceRoot, buildMode, ramInput, codeScanningConfig, repositoryProperties, gitVersion, logger) {
   let overlayDatabaseMode = "none" /* None */;
   let useOverlayDatabaseCaching = false;
   let skippedDueToCachedStatus = false;
@@ -106238,6 +106238,11 @@ async function getOverlayDatabaseMode(codeql, features, languages, sourceRoot, b
     logger.info(
       `Setting overlay database mode to ${overlayDatabaseMode} from the CODEQL_OVERLAY_DATABASE_MODE environment variable.`
     );
+  } else if (repositoryProperties["github-codeql-disable-overlay" /* DISABLE_OVERLAY */] === true) {
+    logger.info(
+      `Setting overlay database mode to ${"none" /* None */} because the ${"github-codeql-disable-overlay" /* DISABLE_OVERLAY */} repository property is set to true.`
+    );
+    overlayDatabaseMode = "none" /* None */;
   } else if (await isOverlayAnalysisFeatureEnabled(
     features,
     codeql,
@@ -106437,6 +106442,7 @@ async function initConfig(features, inputs) {
     config.buildMode,
     inputs.ramInput,
     config.computedConfig,
+    config.repositoryProperties,
     gitVersion,
     logger
   );
diff --git a/src/config-utils.test.ts b/src/config-utils.test.ts
index f8c96b1cd..9e0064fe3 100644
--- a/src/config-utils.test.ts
+++ b/src/config-utils.test.ts
@@ -14,6 +14,7 @@ import { createStubCodeQL } from "./codeql";
 import * as configUtils from "./config-utils";
 import * as errorMessages from "./error-messages";
 import { Feature } from "./feature-flags";
+import { RepositoryProperties } from "./feature-flags/properties";
 import * as gitUtils from "./git-utils";
 import { GitVersionInfo } from "./git-utils";
 import { KnownLanguage, Language } from "./languages";
@@ -983,6 +984,7 @@ interface OverlayDatabaseModeTestSetup {
   diskUsage: DiskUsage | undefined;
   memoryFlagValue: number;
   shouldSkipOverlayAnalysisDueToCachedStatus: boolean;
+  repositoryProperties: RepositoryProperties;
 }
 
 const defaultOverlayDatabaseModeTestSetup: OverlayDatabaseModeTestSetup = {
@@ -1005,6 +1007,7 @@ const defaultOverlayDatabaseModeTestSetup: OverlayDatabaseModeTestSetup = {
   },
   memoryFlagValue: 6920,
   shouldSkipOverlayAnalysisDueToCachedStatus: false,
+  repositoryProperties: {},
 };
 
 const getOverlayDatabaseModeMacro = test.macro({
@@ -1082,6 +1085,7 @@ const getOverlayDatabaseModeMacro = test.macro({
           setup.buildMode,
           undefined,
           setup.codeScanningConfig,
+          setup.repositoryProperties,
           setup.gitVersion,
           logger,
         );
@@ -1920,6 +1924,55 @@ test(
   },
 );
 
+test(
+  getOverlayDatabaseModeMacro,
+  "No overlay when disabled via repository property",
+  {
+    languages: [KnownLanguage.javascript],
+    features: [Feature.OverlayAnalysis, Feature.OverlayAnalysisJavascript],
+    isPullRequest: true,
+    repositoryProperties: {
+      "github-codeql-disable-overlay": true,
+    },
+  },
+  {
+    overlayDatabaseMode: OverlayDatabaseMode.None,
+    useOverlayDatabaseCaching: false,
+  },
+);
+
+test(
+  getOverlayDatabaseModeMacro,
+  "Overlay not disabled when repository property is false",
+  {
+    languages: [KnownLanguage.javascript],
+    features: [Feature.OverlayAnalysis, Feature.OverlayAnalysisJavascript],
+    isPullRequest: true,
+    repositoryProperties: {
+      "github-codeql-disable-overlay": false,
+    },
+  },
+  {
+    overlayDatabaseMode: OverlayDatabaseMode.Overlay,
+    useOverlayDatabaseCaching: true,
+  },
+);
+
+test(
+  getOverlayDatabaseModeMacro,
+  "Environment variable override takes precedence over repository property",
+  {
+    overlayDatabaseEnvVar: "overlay",
+    repositoryProperties: {
+      "github-codeql-disable-overlay": true,
+    },
+  },
+  {
+    overlayDatabaseMode: OverlayDatabaseMode.Overlay,
+    useOverlayDatabaseCaching: false,
+  },
+);
+
 // Exercise language-specific overlay analysis features code paths
 for (const language in KnownLanguage) {
   test(
diff --git a/src/config-utils.ts b/src/config-utils.ts
index 8c54d4e04..7f2b86a15 100644
--- a/src/config-utils.ts
+++ b/src/config-utils.ts
@@ -35,7 +35,10 @@ import { DocUrl } from "./doc-url";
 import { EnvVar } from "./environment";
 import * as errorMessages from "./error-messages";
 import { Feature, FeatureEnablement } from "./feature-flags";
-import { RepositoryProperties } from "./feature-flags/properties";
+import {
+  RepositoryProperties,
+  RepositoryPropertyName,
+} from "./feature-flags/properties";
 import {
   getGeneratedFiles,
   getGitRoot,
@@ -750,6 +753,7 @@ export async function getOverlayDatabaseMode(
   buildMode: BuildMode | undefined,
   ramInput: string | undefined,
   codeScanningConfig: UserConfig,
+  repositoryProperties: RepositoryProperties,
   gitVersion: GitVersionInfo | undefined,
   logger: Logger,
 ): Promise<{
@@ -774,6 +778,14 @@ export async function getOverlayDatabaseMode(
       `Setting overlay database mode to ${overlayDatabaseMode} ` +
         "from the CODEQL_OVERLAY_DATABASE_MODE environment variable.",
     );
+  } else if (
+    repositoryProperties[RepositoryPropertyName.DISABLE_OVERLAY] === true
+  ) {
+    logger.info(
+      `Setting overlay database mode to ${OverlayDatabaseMode.None} ` +
+        `because the ${RepositoryPropertyName.DISABLE_OVERLAY} repository property is set to true.`,
+    );
+    overlayDatabaseMode = OverlayDatabaseMode.None;
   } else if (
     await isOverlayAnalysisFeatureEnabled(
       features,
@@ -1067,6 +1079,7 @@ export async function initConfig(
     config.buildMode,
     inputs.ramInput,
     config.computedConfig,
+    config.repositoryProperties,
     gitVersion,
     logger,
   );