diff --git a/opengrid/library/houseprint/houseprint.py b/opengrid/library/houseprint/houseprint.py
index 5866974e..2cf40585 100644
--- a/opengrid/library/houseprint/houseprint.py
+++ b/opengrid/library/houseprint/houseprint.py
@@ -142,7 +142,9 @@ def _parse_sites(self, sheet):
                             construction_year=r['construction year'],
                             k_level=r['K-level'],
                             e_level=r['E-level'],
-                            epc_cert=r['EPC certificate'])
+                            epc_cert=r['EPC certificate'],
+                            slack_name=r['Slack name']
+                            )
             self.sites.append(new_site)
 
         print('{} Sites created'.format(len(self.sites)))
diff --git a/opengrid/library/houseprint/site.py b/opengrid/library/houseprint/site.py
index e0907d6f..7c01fdeb 100644
--- a/opengrid/library/houseprint/site.py
+++ b/opengrid/library/houseprint/site.py
@@ -13,7 +13,7 @@
 class Site(object):
     def __init__(self, hp=None, key=None, size=None, inhabitants=None,
                  postcode=None, construction_year=None, k_level=None,
-                 e_level=None, epc_cert=None, tmpos=None):
+                 e_level=None, epc_cert=None, tmpos=None, slack_name=None):
         self.hp = hp  # backref to parent
         self.key = key
         self.size = size
@@ -23,6 +23,9 @@ def __init__(self, hp=None, key=None, size=None, inhabitants=None,
         self.k_level = k_level
         self.e_level = e_level
         self.epc_cert = epc_cert
+        if slack_name == '':
+            slack_name = None
+        self.slack_name = slack_name
 
         self.devices = []