diff --git a/source/dub/commandline.d b/source/dub/commandline.d
index c6e4736..6d0bc45 100644
--- a/source/dub/commandline.d
+++ b/source/dub/commandline.d
@@ -950,7 +950,7 @@
 		args.getopt("b|build", &m_buildType, [
 			"Specifies the type of build to perform. Note that setting the DFLAGS environment variable will override the build type with custom flags.",
 			"Possible names:",
-			"  debug (default), plain, release, release-debug, release-nobounds, unittest, profile, profile-gc, docs, ddox, cov, unittest-cov, syntax and custom types"
+			"  "~builtinBuildTypes.join(", ")~" and custom types"
 		]);
 		args.getopt("c|config", &m_buildConfig, [
 			"Builds the specified configuration. Configurations can be defined in dub.json"
@@ -1148,10 +1148,10 @@
 
 		setupVersionPackage(dub, str_package_info, "debug");
 
-		if (m_printBuilds) { // FIXME: use actual package data
+		if (m_printBuilds) {
 			logInfo("Available build types:");
-			foreach (tp; ["debug", "release", "unittest", "profile"])
-				logInfo("  %s", tp);
+			foreach (i, tp; dub.project.builds)
+				logInfo("  %s%s", tp, i == 0 ? " [default]" : null);
 			logInfo("");
 		}
 
diff --git a/source/dub/package_.d b/source/dub/package_.d
index 896633b..cf49f92 100644
--- a/source/dub/package_.d
+++ b/source/dub/package_.d
@@ -55,6 +55,23 @@
 /// Returns the default package recile file name.
 @property string defaultPackageFilename() { return packageInfoFiles[0].filename; }
 
+/// All built-in build type names except for the special `$DFLAGS` build type.
+/// Has the default build type (`debug`) as first index.
+static immutable string[] builtinBuildTypes = [
+	"debug",
+	"plain",
+	"release",
+	"release-debug",
+	"release-nobounds",
+	"unittest",
+	"profile",
+	"profile-gc",
+	"docs",
+	"ddox",
+	"cov",
+	"unittest-cov",
+	"syntax"
+];
 
 /**	Represents a package, including its sub packages.
 */
@@ -256,6 +273,18 @@
 		return ret.data;
 	}
 
+	/** Returns the list of all custom build type names.
+
+		Build type contents can be accessed using `this.recipe.buildTypes`.
+	*/
+	@property string[] customBuildTypes()
+	const {
+		auto ret = appender!(string[])();
+		foreach (name; m_info.buildTypes.byKey)
+			ret.put(name);
+		return ret.data;
+	}
+
 	/** Writes the current recipe contents to a recipe file.
 
 		The parameter-less overload writes to `this.path`, which must not be
diff --git a/source/dub/project.d b/source/dub/project.d
index 242dcd7..03f6901 100644
--- a/source/dub/project.d
+++ b/source/dub/project.d
@@ -427,6 +427,10 @@
 	/// Returns the names of all configurations of the root package.
 	@property string[] configurations() const { return m_rootPackage.configurations; }
 
+	/// Returns the names of all built-in and custom build types of the root package.
+	/// The default built-in build type is the first item in the list.
+	@property string[] builds() const { return builtinBuildTypes ~ m_rootPackage.customBuildTypes; }
+
 	/// Returns a map with the configuration for all packages in the dependency tree.
 	string[string] getPackageConfigs(in BuildPlatform platform, string config, bool allow_non_library = true)
 	const {