diff --git a/src/gswe-types.c b/src/gswe-types.c
index dbb8926..651f3df 100644
--- a/src/gswe-types.c
+++ b/src/gswe-types.c
@@ -45,3 +45,17 @@ gswe_coordinates_copy(GsweCoordinates *coordinates)
 
 G_DEFINE_BOXED_TYPE(GsweCoordinates, gswe_coordinates, (GBoxedCopyFunc)gswe_coordinates_copy, (GBoxedFreeFunc)g_free);
 
+static GsweHouseData *
+gswe_house_data_copy(GsweHouseData *house_data)
+{
+    GsweHouseData *ret = g_new0(GsweHouseData, 1);
+
+    ret->house = house_data->house;
+    ret->cusp_position = house_data->cusp_position;
+    ret->sign = house_data->sign;
+
+    return ret;
+}
+
+G_DEFINE_BOXED_TYPE(GsweHouseData, gswe_house_data, (GBoxedCopyFunc)gswe_house_data_copy, (GBoxedFreeFunc)g_free);
+
diff --git a/src/gswe-types.h b/src/gswe-types.h
index aad3172..d7fa1b3 100644
--- a/src/gswe-types.h
+++ b/src/gswe-types.h
@@ -382,6 +382,9 @@ typedef struct {
     GsweSignInfo *sign;
 } GsweHouseData;
 
+GType gswe_house_data_get_type(void);
+#define GSWE_TYPE_HOUSE_DATA (gswe_house_data_get_type())
+
 /**
  * GsweAspectData:
  * @planet1: the first planet in the aspect