diff --git a/smithy-aws-iam-traits/src/main/java/software/amazon/smithy/aws/iam/traits/ServiceResolvedConditionKeysTrait.java b/smithy-aws-iam-traits/src/main/java/software/amazon/smithy/aws/iam/traits/ServiceResolvedConditionKeysTrait.java
index 06a19561b86..3c8cba6aea9 100644
--- a/smithy-aws-iam-traits/src/main/java/software/amazon/smithy/aws/iam/traits/ServiceResolvedConditionKeysTrait.java
+++ b/smithy-aws-iam-traits/src/main/java/software/amazon/smithy/aws/iam/traits/ServiceResolvedConditionKeysTrait.java
@@ -12,8 +12,10 @@
 import software.amazon.smithy.model.shapes.ShapeId;
 import software.amazon.smithy.model.traits.StringListTrait;
 import software.amazon.smithy.utils.ListUtils;
+import software.amazon.smithy.utils.ToSmithyBuilder;
 
-public final class ServiceResolvedConditionKeysTrait extends StringListTrait {
+public final class ServiceResolvedConditionKeysTrait extends StringListTrait
+        implements ToSmithyBuilder<ServiceResolvedConditionKeysTrait> {
     public static final ShapeId ID = ShapeId.from("aws.iam#serviceResolvedConditionKeys");
     private List<String> resolvedConditionKeys;
 
@@ -47,4 +49,20 @@ public Provider() {
             super(ID, ServiceResolvedConditionKeysTrait::new);
         }
     }
+
+    public static Builder builder() {
+        return new Builder();
+    }
+
+    @Override
+    public Builder toBuilder() {
+        return builder().sourceLocation(getSourceLocation()).values(getValues());
+    }
+
+    public static final class Builder extends StringListTrait.Builder<ServiceResolvedConditionKeysTrait, Builder> {
+        @Override
+        public ServiceResolvedConditionKeysTrait build() {
+            return new ServiceResolvedConditionKeysTrait(getValues(), getSourceLocation());
+        }
+    }
 }
diff --git a/smithy-aws-iam-traits/src/test/java/software/amazon/smithy/aws/iam/traits/ServiceResolvedConditionKeysTraitTest.java b/smithy-aws-iam-traits/src/test/java/software/amazon/smithy/aws/iam/traits/ServiceResolvedConditionKeysTraitTest.java
index 9fe15d07c92..adb382fff4b 100644
--- a/smithy-aws-iam-traits/src/test/java/software/amazon/smithy/aws/iam/traits/ServiceResolvedConditionKeysTraitTest.java
+++ b/smithy-aws-iam-traits/src/test/java/software/amazon/smithy/aws/iam/traits/ServiceResolvedConditionKeysTraitTest.java
@@ -6,6 +6,7 @@
 
 import static org.hamcrest.MatcherAssert.assertThat;
 import static org.hamcrest.Matchers.equalTo;
+import static org.junit.jupiter.api.Assertions.assertEquals;
 
 import org.junit.jupiter.api.Test;
 import software.amazon.smithy.model.Model;
@@ -14,6 +15,18 @@
 import software.amazon.smithy.utils.ListUtils;
 
 public class ServiceResolvedConditionKeysTraitTest {
+
+    @Test
+    public void testBuilder() {
+        ServiceResolvedConditionKeysTrait.Builder builder = ServiceResolvedConditionKeysTrait.builder();
+        builder.addValue("one");
+        builder.addValue("two");
+        ServiceResolvedConditionKeysTrait trait = builder.build();
+        assertEquals(2, trait.getValues().size());
+        assertThat(trait.getValues(),
+                equalTo(ListUtils.of("one", "two")));
+    }
+
     @Test
     public void loadsFromModel() {
         Model result = Model.assembler()