Ngai Tahu Property Ltd's resource consent application says the demolition of the 22 buildings - including the swimming pool, stadium and gym - would take about six months.
The company plans to use the land to build a 300-plus housing development on the 4ha site, more than 100 of which would mainly be apartment blocks, to go in to the Government's KiwiBuild programme.
In March, the Otago Daily Times reported the first homes were expected to be completed in 2022.
Ngai Tahu Property's resource consent application said an estimated 17,157cu m of earthworks would be required to prepare the site for future development.
A demolition management plan, prepared by Ryal Bush Demolition, said the 22 buildings covered about 10,500sq m of the 40,000sq m site.
The development company also proposes the demolition of all associated underground infrastructure. However, before demolition could begin asbestos-containing materials (ACM) had to be removed.
The plan said a non-intrusive demolition/management survey of the buildings had been completed and there were areas of asbestos-containing materials - in some prefabricated building cladding and underground pipes - to be removed in advance of demolition beginning.
"A more thorough intrusive survey will be completed prior to demolition works beginning and any additional ACM will be removed.
"ACM monitoring will continue throughout the demolition works and any additional identified material will be removed by a qualified operator."
Asbestos removal was expected to take eight weeks and then demolition could begin. It was estimated it would take 22 weeks, depending on "what unknowns are uncovered"- for example, further asbestos, historical or environmental issues.
"There always remains the potential for historical contamination issues to arise which may influence demolition timeframes."
The application said "quiet set-up" would start on site from 6.30am weekdays, and machinery work hours were proposed between 7.30am and 6pm Monday to Friday.
No work - other than that required for "operational necessity" - was to be carried out on weekends or public holidays.
Truck movement hours were proposed between 7.30am and 5pm weekdays.
Ngai Tahu Property declined to comment until consent had been granted.
