The Home Hills and Kyeburn pastoral leases were recently purchased by the Crown through tenure review.
Doc Central Otago area manager Mike Tubbs said the properties would become part of the 65,000ha Oteake park once formally gazetted by Land Information New Zealand.
"We expect the title for Home Hills to come through about September, and for the Kyeburn title to take a similar amount of time."
Home Hills comprises about 1400ha of land above Falls dam near St Bathans, and the 4700ha Kyeburn property is situated on Mt Buster Rd near Dansey Pass.
Oteake is planned for development as a public recreational area where people can enjoy tramping, mountain biking, angling, back-country skiing, hunting, four-wheel driving and motorcycling.
Included in the park were seven existing conservation areas.
The proposed park is open for public submissions until July 14.
Mr Tubbs said seven submissions were received on a pre-release document which was sent to affected parties and adjoining neighbours before it was made public.
Just one submission has been received since.