 Now, it is used as an office building.Parts of the park have been subject to housing development.Geoffrey de Mandeville, 1st Earl of Essex, who died in 1144, made the sub-manor of Pishiobury originated in a grant of 74 libartes of land within the main Manor of Sawbridgeworth to Warin FitzGerold and Henry FitzGerold, to hold by service of one Knight for each 20 libartes.