Jack Byrne Hall is a large indoor gathering space inside Ultimo Community Centre at 40 William Henry Street, corner of Bulwara Road. City of Sydney specifies a 20 by 12 metre hall with an overall maximum of 200 people; the council lists 150 for receptions, 200 for meetings or seminars and 180 for concerts. The space is suitable for large community functions, workshops, performances and meetings, and is bookable during community-centre operating hours. Hirers should check furniture and sports-court changeover arrangements.