A north London house, believed to measure just 6 ft 11 inches (2.1m) wide has been put up for sale for £200,000.
The two-bedroom property in Haringey has a reception room, kitchen and bathroom, as well as a roof terrace.
The terraced house is believed to have been built on a driveway between two homes and is due to be sold at auction on 1 October with a guide price of £235,000.
The agents selling the house said it was "very unique".
James McHugh, from McHugh & Co, said: "It's a very unique house, to say the least, in a great location.
"The property would certainly appeal to an owner-occupier or rental investor."
In May, planning inspectors ruled that a 6ft (1.8m) wide house in Leyton, east London should be returned to its original use as a garage.
The two-storey building, between terraced houses, was branded "singularly out of place" and "wholly unsatisfactory" by a planning inspector.