More than 143,800 trees will be planted over 13 years.
The project will feature a 55-lot subdivision, including 43 cabins and 11 chalets for residential and visitor accommodation.
There will also be a lodge with facilities for events of up to 60 people, and capable of accommodating 20 overnight guests.
Mr Smith said 80% of the proposed sites would be a maximum of 100sq m, to ''maximise affordability and minimise environmental impact''.
There would also be more than 50km of publicly accessible hiking and biking trails, including 19.7km of new trails.
And it might be just the first of many similar projects.
Mr Smith said Treespace was looking at a site in the North Island, and another in Southland, for future reforestation projects.
They were not necessarily linked to ecotourism but could traverse ''education, habitation, health, wellbeing, sustainable agriculture, renewable energy and clean technology''.
Treespace had voluntarily asked for the resource consent application to be publicly notified, due to the ''massive scale'' of it.
''We felt like that was the natural thing to do.''
He hoped to ''get trees in the ground'' this year.
''We're pretty keen to get it going.''