The exact location of William Shakespeare's only London property has been pinpointed to a Blackfriars street, after an unknown floorplan was discovered. Shakespeare expert Prof. Lucy Munro from King's College London identified the size and location of the property he bought in 1613. It had been thought that Shakespeare retired from his theatre career not long after he bought the house and returned to Stratford-upon-Avon. However, academics believe the discovery could indicate that the playwright spent more time in London than previously believed. It also means that the blue plaque for Shakespeare on St Andrew's Hill is not 'near' the site of his London house, but on the spot it used to exist. Shakespeare's Blackfriars property was thought to have been part of 'the Great Gate' over the entrance to the Blackfriars precinct, a major 13th-century Dominican friary. Munro uncovered three documents – two from the London Archives and one from the National Archives – that provided more information. Munro said: 'I was doing research as part of a wider project and couldn't believe it when I realised what I was looking at - the floorplan of Shakespeare's Blackfriars house.' One of the documents was a plan of part of the Blackfriars precinct, drawn up in 1668, two years after the Great Fire of London, which confirmed the precise location and size of Shakespeare's Blackfriars house. The part of the property that spanned the gate did not appear in the post-fire plan because it had no foundation. Munro said, 'This house was close to [Shakespeare's] workplace at the Blackfriars theatre. We know that Shakespeare co-authored Two Noble Kinsmen with John Fletcher later in 1613, and this new evidence that the Blackfriars house was quite substantial makes it not inconceivable that some of it may have been written in this very property.'