diff --git a/src/builder/java/net/kemitix/checkstyle/ruleset/builder/CheckstyleRulesetBuilderApplication.java b/src/builder/java/net/kemitix/checkstyle/ruleset/builder/CheckstyleRulesetBuilderApplication.java
new file mode 100644
index 0000000..4052038
--- /dev/null
+++ b/src/builder/java/net/kemitix/checkstyle/ruleset/builder/CheckstyleRulesetBuilderApplication.java
@@ -0,0 +1,22 @@
+package net.kemitix.checkstyle.ruleset.builder;
+
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+/**
+ * Creates the checkstyle ruleset files.
+ *
+ * <p>This application is intended to only to be used by the developer to create the actual checkstyle xml files that
+ * this module provides.</p>
+ *
+ * @author Paul Campbell (pcampbell@kemitix.net)
+ */
+@Slf4j
+@SpringBootApplication
+public class CheckstyleRulesetBuilderApplication {
+
+    public static void main(final String[] args) {
+        SpringApplication.run(CheckstyleRulesetBuilderApplication.class, args);
+    }
+}
diff --git a/src/builder/java/net/kemitix/checkstyle/ruleset/builder/OutputProperties.java b/src/builder/java/net/kemitix/checkstyle/ruleset/builder/OutputProperties.java
new file mode 100644
index 0000000..dffb53f
--- /dev/null
+++ b/src/builder/java/net/kemitix/checkstyle/ruleset/builder/OutputProperties.java
@@ -0,0 +1,52 @@
+package net.kemitix.checkstyle.ruleset.builder;
+
+import lombok.Getter;
+import lombok.Setter;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.context.annotation.Configuration;
+
+import java.io.File;
+
+/**
+ * Properties defining the output files.
+ *
+ * @author Paul Campbell (pcampbell@kemitix.net)
+ */
+@Slf4j
+@Setter
+@Getter
+@Configuration
+@ConfigurationProperties(prefix = "output")
+class OutputProperties {
+
+    /**
+     * The directory to create the output files in.
+     */
+    private File directory;
+
+    /**
+     * The name of the level 1 ruleset file.
+     */
+    private String level1;
+
+    /**
+     * The name of the level 2 ruleset file.
+     */
+    private String level2;
+
+    /**
+     * The name of the level 3 ruleset file.
+     */
+    private String level3;
+
+    /**
+     * The name of the level 4 ruleset file.
+     */
+    private String level4;
+
+    /**
+     * The name of the level 5 ruleset file.
+     */
+    private String level5;
+}
diff --git a/src/builder/java/net/kemitix/checkstyle/ruleset/builder/Rule.java b/src/builder/java/net/kemitix/checkstyle/ruleset/builder/Rule.java
new file mode 100644
index 0000000..810e906
--- /dev/null
+++ b/src/builder/java/net/kemitix/checkstyle/ruleset/builder/Rule.java
@@ -0,0 +1,38 @@
+package net.kemitix.checkstyle.ruleset.builder;
+
+import lombok.Getter;
+import lombok.Setter;
+import lombok.ToString;
+
+import java.net.URI;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * .
+ *
+ * @author Paul Campbell (paul.campbell@hubio.com)
+ */
+@ToString
+@Setter
+@Getter
+class Rule {
+
+    private String name;
+
+    private RuleParent parent;
+
+    private RuleLevel level;
+
+    private boolean enabled;
+
+    private RuleSource source;
+
+    private URI uri;
+
+    private Map<String, String> properties = new HashMap<>();
+
+    private List<String> body = new ArrayList<>();
+}
diff --git a/src/builder/java/net/kemitix/checkstyle/ruleset/builder/RuleLevel.java b/src/builder/java/net/kemitix/checkstyle/ruleset/builder/RuleLevel.java
new file mode 100644
index 0000000..d9bda0c
--- /dev/null
+++ b/src/builder/java/net/kemitix/checkstyle/ruleset/builder/RuleLevel.java
@@ -0,0 +1,15 @@
+package net.kemitix.checkstyle.ruleset.builder;
+
+/**
+ * .
+ *
+ * @author Paul Campbell (paul.campbell@hubio.com)
+ */
+public enum RuleLevel {
+
+    LAYOUT,
+    NAMING,
+    JAVADOC,
+    TWEAKS,
+    COMPLEXITY;
+}
diff --git a/src/builder/java/net/kemitix/checkstyle/ruleset/builder/RuleParent.java b/src/builder/java/net/kemitix/checkstyle/ruleset/builder/RuleParent.java
new file mode 100644
index 0000000..2928268
--- /dev/null
+++ b/src/builder/java/net/kemitix/checkstyle/ruleset/builder/RuleParent.java
@@ -0,0 +1,12 @@
+package net.kemitix.checkstyle.ruleset.builder;
+
+/**
+ * .
+ *
+ * @author Paul Campbell (paul.campbell@hubio.com)
+ */
+public enum RuleParent {
+
+    CHECKER,
+    TREEWALKER;
+}
diff --git a/src/builder/java/net/kemitix/checkstyle/ruleset/builder/RuleSource.java b/src/builder/java/net/kemitix/checkstyle/ruleset/builder/RuleSource.java
new file mode 100644
index 0000000..f168ea9
--- /dev/null
+++ b/src/builder/java/net/kemitix/checkstyle/ruleset/builder/RuleSource.java
@@ -0,0 +1,12 @@
+package net.kemitix.checkstyle.ruleset.builder;
+
+/**
+ * .
+ *
+ * @author Paul Campbell (paul.campbell@hubio.com)
+ */
+public enum RuleSource {
+
+    CHECKSTYLE,
+    SEVNTU;
+}
diff --git a/src/builder/java/net/kemitix/checkstyle/ruleset/builder/RulesProperties.java b/src/builder/java/net/kemitix/checkstyle/ruleset/builder/RulesProperties.java
new file mode 100644
index 0000000..ba37bdc
--- /dev/null
+++ b/src/builder/java/net/kemitix/checkstyle/ruleset/builder/RulesProperties.java
@@ -0,0 +1,25 @@
+package net.kemitix.checkstyle.ruleset.builder;
+
+import lombok.Getter;
+import lombok.Setter;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.context.annotation.Configuration;
+
+import java.util.HashSet;
+import java.util.Set;
+
+/**
+ * Properties defining the enabled rules for each level.
+ *
+ * @author Paul Campbell (pcampbell@kemitix.net)
+ */
+@Slf4j
+@Setter
+@Getter
+@Configuration
+@ConfigurationProperties(prefix = "rules")
+class RulesProperties {
+
+    public Set<Rule> rules = new HashSet<>();
+}