diff --git a/eng/DotNetBuild.props b/eng/DotNetBuild.props
index 75cfd1acb039f5..100e80fa26f561 100644
--- a/eng/DotNetBuild.props
+++ b/eng/DotNetBuild.props
@@ -105,6 +105,10 @@
 
       <!-- Needed until https://github.com/dotnet/runtime/issues/109329 is fixed. -->
       <InnerBuildArgs Condition="'$(NetCoreAppToolCurrentVersion)' != ''">$(InnerBuildArgs) /p:NetCoreAppToolCurrentVersion=$(NetCoreAppToolCurrentVersion)</InnerBuildArgs>
+
+      <!-- Two-stage build is for live runtime packs; apphost, crossgen2 and ilcompiler. It is typically (but not limited to be) used for community-supported platform builds. -->
+      <InnerBuildArgs Condition="'$(StageOneBuild)' != ''">$(InnerBuildArgs) /p:StageOneBuild=$(StageOneBuild) /p:Subset=clr+libs+host</InnerBuildArgs>
+      <InnerBuildArgs Condition="'$(StageTwoBuild)' != ''">$(InnerBuildArgs) /p:StageTwoBuild=$(StageTwoBuild) /p:Subset=clr.tools+tools.illink+packs</InnerBuildArgs>
     </PropertyGroup>
   </Target>
 
diff --git a/src/installer/pkg/sfx/Microsoft.NETCore.App/Microsoft.NETCore.App.Runtime.CoreCLR.sfxproj b/src/installer/pkg/sfx/Microsoft.NETCore.App/Microsoft.NETCore.App.Runtime.CoreCLR.sfxproj
index 14522c2c74e79e..11cdfbfea2eb6a 100644
--- a/src/installer/pkg/sfx/Microsoft.NETCore.App/Microsoft.NETCore.App.Runtime.CoreCLR.sfxproj
+++ b/src/installer/pkg/sfx/Microsoft.NETCore.App/Microsoft.NETCore.App.Runtime.CoreCLR.sfxproj
@@ -27,6 +27,8 @@
     <PublishReadyToRun Condition="'$(TargetOS)' == 'netbsd' or '$(TargetOS)' == 'illumos' or '$(TargetOS)' == 'solaris' or '$(TargetOS)' == 'haiku'">false</PublishReadyToRun>
     <!-- Disable crossgen on FreeBSD when cross building from Linux. -->
     <PublishReadyToRun Condition="'$(TargetOS)'=='freebsd' and '$(CrossBuild)'=='true'">false</PublishReadyToRun>
+    <!-- Disable crossgen for StageTwoBuild. -->
+    <PublishReadyToRun Condition="'$(StageTwoBuild)'=='true'">false</PublishReadyToRun>
     <UsesMuxerHostModel Condition="'$(TargetsMobile)' != 'true'">true</UsesMuxerHostModel>
     <IncludeDiaSymReaderNative Condition="'$(TargetOS)' == 'windows'">true</IncludeDiaSymReaderNative>
     <UseLocalCrossgen2Pack>$(PublishReadyToRun)</UseLocalCrossgen2Pack>