diff --git a/src/MapTo/SourceBuilder.cs b/src/MapTo/SourceBuilder.cs
index 8c3f4df..2db8920 100644
--- a/src/MapTo/SourceBuilder.cs
+++ b/src/MapTo/SourceBuilder.cs
@@ -1,4 +1,5 @@
-using System.Linq;
+using System;
+using System.Linq;
 using System.Text;
 using MapTo.Extensions;
 using MapTo.Models;
@@ -11,7 +12,7 @@ namespace MapTo
         internal const string MapFromAttributeName = "MapFrom";
         internal const string IgnorePropertyAttributeName = "IgnoreProperty";
         internal const string GeneratedFilesHeader = "// <auto-generated />";
-        
+
         private const int Indent1 = 4;
         private const int Indent2 = Indent1 * 2;
         private const int Indent3 = Indent1 * 3;
@@ -23,14 +24,24 @@ using System;
 
 namespace MapTo
 {{
+    /// <summary>
+    /// Specifies that the annotated class can be mapped from the provided <see cref=""SourceType""/>.
+    /// </summary>
     [AttributeUsage(AttributeTargets.Class, Inherited = false, AllowMultiple = false)]
     public sealed class {MapFromAttributeName}Attribute : Attribute
     {{
+        /// <summary>
+        /// Initializes a new instance of the <see cref=""{MapFromAttributeName}Attribute""/> class
+        /// with the specified <paramref name=""sourceType""/>.
+        /// </summary>
         public {MapFromAttributeName}Attribute(Type sourceType)
         {{
             SourceType = sourceType;
         }}
 
+        /// <summary>
+        /// Gets the type of the class that the annotated class should be able to map from. 
+        /// </summary>
         public Type SourceType {{ get; }}
     }}
 }}";
@@ -45,6 +56,9 @@ using System;
 
 namespace MapTo
 {{
+    /// <summary>
+    /// Specified that the annotated property should not be included in the generated mappings. 
+    /// </summary>
     [AttributeUsage(AttributeTargets.Property, Inherited = false, AllowMultiple = false)]
     public sealed class {IgnorePropertyAttributeName}Attribute : Attribute {{ }}
 }}";
@@ -102,16 +116,25 @@ namespace MapTo
             return builder.AppendLine();
         }
 
+        /// <summary>
+        /// 
+        /// </summary>
+        /// <param name="builder"></param>
+        /// <param name="model"></param>
+        /// <returns></returns>
         private static StringBuilder GenerateConstructor(this StringBuilder builder, MapModel model)
         {
             var sourceClassParameterName = model.SourceClassName.ToCamelCase();
 
             builder
-                .PadLeft(Indent2)
-                .AppendFormat("public {0}({1} {2})", model.ClassName, model.SourceClassFullName, sourceClassParameterName)
+                .PadLeft(Indent2).AppendLine("/// <summary>")
+                .PadLeft(Indent2).AppendFormat("/// Initializes a new instance of the <see cref=\"{0}\"/> class", model.ClassName).AppendLine()
+                .PadLeft(Indent2).AppendFormat("/// using the property values from the specified <paramref name=\"{0}\"/>.", sourceClassParameterName).AppendLine()
+                .PadLeft(Indent2).AppendLine("/// </summary>")
+                .PadLeft(Indent2).AppendFormat("/// <exception cref=\"ArgumentNullException\">{0} is null</exception>", sourceClassParameterName).AppendLine()
+                .PadLeft(Indent2).AppendFormat("public {0}({1} {2})", model.ClassName, model.SourceClassFullName, sourceClassParameterName)
                 .AppendOpeningBracket(Indent2)
-                .PadLeft(Indent3)
-                .AppendFormat("if ({0} == null) throw new ArgumentNullException(nameof({0}));", sourceClassParameterName).AppendLine()
+                .PadLeft(Indent3).AppendFormat("if ({0} == null) throw new ArgumentNullException(nameof({0}));", sourceClassParameterName).AppendLine()
                 .AppendLine();
 
             foreach (var property in model.MappedProperties)
@@ -126,17 +149,23 @@ namespace MapTo
             return builder.AppendClosingBracket(Indent2, false);
         }
 
+        /// <summary>
+        /// 
+        /// </summary>
+        /// <param name="builder"></param>
+        /// <param name="model"></param>
+        /// <exception cref="ArgumentNullException"></exception>
+        /// <returns></returns>
         private static StringBuilder GenerateFactoryMethod(this StringBuilder builder, MapModel model)
         {
             var sourceClassParameterName = model.SourceClassName.ToCamelCase();
 
             return builder
                 .AppendLine()
-                .PadLeft(Indent2)
-                .AppendFormat("public static {0} From({1} {2})", model.ClassName, model.SourceClassFullName, sourceClassParameterName)
+                .AppendConvertorMethodsXmlDocs(model, sourceClassParameterName)
+                .PadLeft(Indent2).AppendFormat("public static {0} From({1} {2})", model.ClassName, model.SourceClassFullName, sourceClassParameterName)
                 .AppendOpeningBracket(Indent2)
-                .PadLeft(Indent3)
-                .AppendFormat("return {0} == null ? null : new {1}({0});", sourceClassParameterName, model.ClassName)
+                .PadLeft(Indent3).AppendFormat("return {0} == null ? null : new {1}({0});", sourceClassParameterName, model.ClassName)
                 .AppendClosingBracket(Indent2);
         }
 
@@ -145,15 +174,25 @@ namespace MapTo
             var sourceClassParameterName = model.SourceClassName.ToCamelCase();
 
             return builder
-                .PadLeft(Indent2)
-                .AppendFormat("public static {0} To{0}(this {1} {2})", model.ClassName, model.SourceClassFullName, sourceClassParameterName)
+                .AppendConvertorMethodsXmlDocs(model, sourceClassParameterName)
+                .PadLeft(Indent2).AppendFormat("public static {0} To{0}(this {1} {2})", model.ClassName, model.SourceClassFullName, sourceClassParameterName)
                 .AppendOpeningBracket(Indent2)
-                .PadLeft(Indent3)
-                .AppendFormat("return {0} == null ? null : new {1}({0});", sourceClassParameterName, model.ClassName)
+                .PadLeft(Indent3).AppendFormat("return {0} == null ? null : new {1}({0});", sourceClassParameterName, model.ClassName)
                 .AppendClosingBracket(Indent2);
         }
 
         private static StringBuilder AppendFileHeader(this StringBuilder builder) =>
             builder.AppendLine(GeneratedFilesHeader);
+
+        private static StringBuilder AppendConvertorMethodsXmlDocs(this StringBuilder builder, MapModel model, string sourceClassParameterName)
+        {
+            return builder
+                .PadLeft(Indent2).AppendLine("/// <summary>")
+                .PadLeft(Indent2).AppendFormat("/// Creates a new instance of <see cref=\"{0}\"/> and sets its participating properties", model.ClassName).AppendLine()
+                .PadLeft(Indent2).AppendFormat("/// using the property values from <paramref name=\"{0}\"/>.", sourceClassParameterName).AppendLine()
+                .PadLeft(Indent2).AppendLine("/// </summary>")
+                .PadLeft(Indent2).AppendFormat("/// <param name=\"{0}\">Instance of <see cref=\"{1}\"/> to use as source.</param>", sourceClassParameterName, model.SourceClassName).AppendLine()
+                .PadLeft(Indent2).AppendFormat("/// <returns>A new instance of <see cred=\"{0}\"/> -or- <c>null</c> if <paramref name=\"{1}\"/> is <c>null</c>.</returns>", model.ClassName, sourceClassParameterName).AppendLine();
+        }
     }
 }
\ No newline at end of file