diff --git a/Directory.Build.props b/Directory.Build.props
new file mode 100644
index 0000000..04db30c
--- /dev/null
+++ b/Directory.Build.props
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project>
+
+	<!-- this file specifies a set of common properties imported by all projects in the folder -->
+	<PropertyGroup>
+		<Nullable>enable</Nullable>
+		<LangVersion>latest</LangVersion>
+		<Company>LlamaIndex</Company>
+	</PropertyGroup>
+
+</Project>
diff --git a/samples/Aspire/LlamaParseAspire/LlamaParseAspire.csproj b/samples/Aspire/LlamaParseAspire/LlamaParseAspire.csproj
index f008da9..5b4ad29 100644
--- a/samples/Aspire/LlamaParseAspire/LlamaParseAspire.csproj
+++ b/samples/Aspire/LlamaParseAspire/LlamaParseAspire.csproj
@@ -2,7 +2,6 @@
 
   <PropertyGroup>
     <TargetFramework>net8.0</TargetFramework>
-    <Nullable>enable</Nullable>
     <ImplicitUsings>enable</ImplicitUsings>
   </PropertyGroup>
 
diff --git a/samples/Aspire/Llamaindex.AppHost/Llamaindex.AppHost.csproj b/samples/Aspire/Llamaindex.AppHost/Llamaindex.AppHost.csproj
index b48b0f4..15f86b6 100644
--- a/samples/Aspire/Llamaindex.AppHost/Llamaindex.AppHost.csproj
+++ b/samples/Aspire/Llamaindex.AppHost/Llamaindex.AppHost.csproj
@@ -4,7 +4,6 @@
     <OutputType>Exe</OutputType>
     <TargetFramework>net8.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
-    <Nullable>enable</Nullable>
     <IsAspireHost>true</IsAspireHost>
     <UserSecretsId>fff811e8-12df-4169-98be-06dcae123561</UserSecretsId>
   </PropertyGroup>
diff --git a/samples/Aspire/Llamaindex.ServiceDefaults/Llamaindex.ServiceDefaults.csproj b/samples/Aspire/Llamaindex.ServiceDefaults/Llamaindex.ServiceDefaults.csproj
index 589e391..6aca4f9 100644
--- a/samples/Aspire/Llamaindex.ServiceDefaults/Llamaindex.ServiceDefaults.csproj
+++ b/samples/Aspire/Llamaindex.ServiceDefaults/Llamaindex.ServiceDefaults.csproj
@@ -3,7 +3,6 @@
   <PropertyGroup>
     <TargetFramework>net8.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
-    <Nullable>enable</Nullable>
     <IsAspireSharedProject>true</IsAspireSharedProject>
   </PropertyGroup>
 
diff --git a/src/LlamaIndex.Core.Tests/LlamaIndex.Core.Tests.csproj b/src/LlamaIndex.Core.Tests/LlamaIndex.Core.Tests.csproj
index f91e3be..eebfd7b 100644
--- a/src/LlamaIndex.Core.Tests/LlamaIndex.Core.Tests.csproj
+++ b/src/LlamaIndex.Core.Tests/LlamaIndex.Core.Tests.csproj
@@ -3,7 +3,6 @@
   <PropertyGroup>
     <TargetFramework>net8.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
-    <Nullable>enable</Nullable>
 
     <IsPackable>false</IsPackable>
     <IsTestProject>true</IsTestProject>
diff --git a/src/LlamaIndex.Core/LlamaIndex.Core.csproj b/src/LlamaIndex.Core/LlamaIndex.Core.csproj
index 85a071b..da9d08a 100644
--- a/src/LlamaIndex.Core/LlamaIndex.Core.csproj
+++ b/src/LlamaIndex.Core/LlamaIndex.Core.csproj
@@ -2,14 +2,11 @@
 
 	<PropertyGroup>
 		<TargetFramework>netstandard2.0</TargetFramework>
-		<Nullable>enable</Nullable>
-		<LangVersion>latest</LangVersion>
 	</PropertyGroup>
 
 	<PropertyGroup>
 		<IsPackable>true</IsPackable>
 		<PackageId>LlamaIndex.Core</PackageId>
-		<Company>LlamaIndex</Company>
 	</PropertyGroup>
 
 
diff --git a/src/LlamaParse.Tests/LlamaParse.Tests.csproj b/src/LlamaParse.Tests/LlamaParse.Tests.csproj
index 41b7dad..65bd83a 100644
--- a/src/LlamaParse.Tests/LlamaParse.Tests.csproj
+++ b/src/LlamaParse.Tests/LlamaParse.Tests.csproj
@@ -3,7 +3,6 @@
   <PropertyGroup>
     <TargetFramework>net8.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
-    <Nullable>enable</Nullable>
 
     <IsPackable>false</IsPackable>
     <IsTestProject>true</IsTestProject>
diff --git a/src/LlamaParse/LlamaParse.csproj b/src/LlamaParse/LlamaParse.csproj
index 904440c..16d6430 100644
--- a/src/LlamaParse/LlamaParse.csproj
+++ b/src/LlamaParse/LlamaParse.csproj
@@ -2,14 +2,11 @@
 
 	<PropertyGroup>
 		<TargetFramework>netstandard2.0</TargetFramework>
-		<Nullable>enable</Nullable>
-		<LangVersion>latest</LangVersion>
 	</PropertyGroup>
 
 	<PropertyGroup>
 		<IsPackable>true</IsPackable>
 		<PackageId>LlamaParse</PackageId>
-		<Company>LlamaIndex</Company>
 	</PropertyGroup>
 
 	<ItemGroup>