A pretty period cottage of 812 sqft/75sqm, with southerly facing garden.
The house offers scope to create a single storey extension down the side return, subject to the usual consents. Other houses in the street have done so. Further updating would also be desirable. 
St Barnabas Street is in south Belgravia. It is close to the new Chelsea Barracks development and hence within walking distance of Sloane Square.