diff --git a/build-tools/xaprepare/xaprepare/Application/Context.cs b/build-tools/xaprepare/xaprepare/Application/Context.cs
index 80cda24eda1..2b634fc9976 100644
--- a/build-tools/xaprepare/xaprepare/Application/Context.cs
+++ b/build-tools/xaprepare/xaprepare/Application/Context.cs
@@ -287,7 +287,12 @@ public string DebugFileExtension {
 		/// </summary>
 		public IEnumerable<string> AndroidSdkPlatforms { get; set; } = Enumerable.Empty<string> ();
 
-		// <summary>
+		/// <summary>
+		///   Path to a local .NET SDK archive to use instead of downloading.
+		/// </summary>
+		public string? LocalDotNetSdkArchive { get; set; }
+
+		/// <summary>
 		///   Set by <see cref="Step_Get_Android_BuildTools"/> if the archive has been downloaded and validated.
 		/// </summary>
 		public bool BuildToolsArchiveDownloaded { get; set; }
diff --git a/build-tools/xaprepare/xaprepare/Main.cs b/build-tools/xaprepare/xaprepare/Main.cs
index b225d0aa10f..8676b92d7a2 100644
--- a/build-tools/xaprepare/xaprepare/Main.cs
+++ b/build-tools/xaprepare/xaprepare/Main.cs
@@ -29,6 +29,7 @@ sealed class ParsedOptions
 			public bool AutoProvisionUsesSudo  { get; set; }
 			public RefreshableComponent RefreshList { get; set; }
 			public IEnumerable<string> AndroidSdkPlatforms { get; set; } = new [] { "latest" };
+			public string? LocalDotNetSdkArchive { get; set; }
 		}
 
 		public static int Main (string[] args)
@@ -101,6 +102,7 @@ static async Task<int> Run (string[] args)
 				{"auto-provision=", $"Automatically install software required by .NET for Android", v => parsedOptions.AutoProvision = ParseBoolean (v)},
 				{"auto-provision-uses-sudo=", $"Allow use of sudo(1) when provisioning", v => parsedOptions.AutoProvisionUsesSudo = ParseBoolean (v)},
 				{"android-sdk-platforms=", "Comma separated list of Android SDK platform levels to be installed or 'latest' or 'all'. Defaults to 'latest' if no value is provided.", v => parsedOptions.AndroidSdkPlatforms = ParseAndroidSdkPlatformLevels (v?.Trim () ?? String.Empty) },
+				{"dotnet-sdk-archive=", "Path to a local .NET SDK archive (zip or tar.gz) to use instead of downloading from the internet.", v => parsedOptions.LocalDotNetSdkArchive = v?.Trim () },
 				"",
 				{"h|help", "Show this help message", v => parsedOptions.ShowHelp = true },
 			};
@@ -132,6 +134,7 @@ static async Task<int> Run (string[] args)
 			Context.Instance.AutoProvisionUsesSudo = parsedOptions.AutoProvisionUsesSudo;
 			Context.Instance.ComponentsToRefresh   = parsedOptions.RefreshList;
 			Context.Instance.AndroidSdkPlatforms   = parsedOptions.AndroidSdkPlatforms;
+			Context.Instance.LocalDotNetSdkArchive = parsedOptions.LocalDotNetSdkArchive;
 
 			if (!String.IsNullOrEmpty (parsedOptions.Configuration))
 				Context.Instance.Configuration = parsedOptions.Configuration!;
diff --git a/build-tools/xaprepare/xaprepare/Steps/Step_InstallDotNetPreview.cs b/build-tools/xaprepare/xaprepare/Steps/Step_InstallDotNetPreview.cs
index 1207336cb64..1c0fb8e566e 100644
--- a/build-tools/xaprepare/xaprepare/Steps/Step_InstallDotNetPreview.cs
+++ b/build-tools/xaprepare/xaprepare/Steps/Step_InstallDotNetPreview.cs
@@ -21,7 +21,13 @@ protected override async Task<bool> Execute (Context context)
 			var dotnetPath = Configurables.Paths.DotNetPreviewPath;
 			dotnetPath = dotnetPath.TrimEnd (new char [] { Path.DirectorySeparatorChar });
 
-			if (!await InstallDotNetAsync (context, dotnetPath, BuildToolVersion, useCachedInstallScript: true) &&
+			// Check if a local SDK archive was specified
+			if (!String.IsNullOrEmpty (context.LocalDotNetSdkArchive)) {
+				if (!await InstallDotNetFromLocalArchiveAsync (context, dotnetPath, context.LocalDotNetSdkArchive!)) {
+					Log.ErrorLine ($"Installation of dotnet SDK from local archive '{context.LocalDotNetSdkArchive}' failed.");
+					return false;
+				}
+			} else if (!await InstallDotNetAsync (context, dotnetPath, BuildToolVersion, useCachedInstallScript: true) &&
 					!await InstallDotNetAsync (context, dotnetPath, BuildToolVersion, useCachedInstallScript: false)) {
 				Log.ErrorLine ($"Installation of dotnet SDK '{BuildToolVersion}' failed.");
 				return false;
@@ -179,6 +185,21 @@ string[] GetInstallationScriptArgs (string version, string dotnetPath, string do
 			return args.ToArray ();
 		}
 
+		async Task<bool> InstallDotNetFromLocalArchiveAsync (Context context, string dotnetPath, string archivePath)
+		{
+			if (!File.Exists (archivePath)) {
+				Log.ErrorLine ($"Local .NET SDK archive not found: '{archivePath}'");
+				return false;
+			}
+
+			Log.StatusLine ($"Installing .NET SDK from local archive: {archivePath}");
+
+			// Always delete the bin/$(Configuration)/dotnet/ directory
+			Utilities.DeleteDirectory (dotnetPath);
+
+			return await Utilities.Unpack (archivePath, dotnetPath);
+		}
+
 		async Task<bool> InstallDotNetAsync (Context context, string dotnetPath, string version, bool useCachedInstallScript, bool runtimeOnly = false)
 		{
 			string cacheDir = context.Properties.GetRequiredValue (KnownProperties.AndroidToolchainCacheDirectory);