A house near Camborne collapsed in the early hours of this morning.
The entire north facing side of the house is now in rubble.
A local resident heard an “almighty rumble” at around 5.20am and now says the road has been cordoned off.
A Devon and Cornwall police spokesman said they were not called to the scene.
Postmistress at Tehidy Stores, Barbara Beach said Cormac, Cornwall Council’s arms-length engineering company, were on the site yesterday after a crack appeared in the property that has now collapsed.
She said: “a number of years ago” a mine shaft had opened up in the garden of the property next door.
She said the shaft has been cordoned off since it originally opened up.
Speaking to West Briton she said: “It was as if a couple of huge lorries were passing by.
"At first I thought it can’t be anything more, but then seeing it this morning, I was shocked.
“I am not aware of anyone being in the home. I think it must have been empty.
"There was a mine shaft that opened next door and we noticed a huge crack in the house yesterday."
Her son, John took photographs of the property first thing this morning.
Cornwall Council officers are currently on site assessing the damage.