The blaze tore through the bar, near Springwell on the edge of Washington, on Thursday, September 13, leading police to close off the road outside as Tyne and Wear Fire and Rescue Service tackled the flames.
A total of 26 firefighters were called in from stations in Washington, Farringdon, Birtley, Byker and Gosforth, while five pumping appliances and an aerial ladder platform were part of the response.
An investigation into the cause was launched as the emergency services piece together the cause of the fire.
Today, the bar's bosses have posted an update on its Facebook page.
They said: "Most people are aware of the tragic situation, The Mill House recently suffered a devastating fire.
"The past week has been extremely difficult for everyone involved, including staff, customers, management and owners.
"Whilst we will endeavour to honour any future events booked in the main building or the tipis, at this present time, it is unfortunately beyond our ability.
"As you can imagine, there is so much happening behind the scenes.
"We will keep everyone updated once we know more from our insurers.
"Please be patient."
The Echo has previously contacted the business for comment without response.