400 Residential Units
7 to 13 Floors
Former Her Majesty’s Prison Holloway
O’Halloran & O’Brien have acted as Principal Contractor for Phase 1, delivering around 400 residential units across seven blocks ranging from 7 to 13 storeys on the former site of Her Majesty’s Women’s Prison in Holloway.
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80+
LIVE CONTRACTS
40+
CLIENTS
50+
YEARS IN BUSINESS