The growing trees will sequester carbon.
"Better Eggs is a New Zealand family-owned business with strong family values," van der Heyden said.
Listen to Jamie Mackay interview Gareth van der Hayden on The Country below:
"These values are what have led us to innovate a whole new way of poultry farming in New Zealand that will enable the hens to live in a natural environment from which they originated, while producing eggs in a sustainable manner.
"They will be able to roam and scratch on the forest floor in the shade, shelter and safety provided by the trees and the laying sheds are specially designed to give the birds natural light and ample space to roam around in.
Van der Heyden said they were providing the birds with the highest animal welfare and hen enrichment standards.
"We sought advice from Australia and Europe that enables us to exceed best practice in many facets."
The farm is highly automated enabling staff on site to spend a greater portion of their time caring for the hens.
Eggs are transported from the nesting boxes via conveyor belts to a robot that packs the eggs into trays and pallets which are then collected by trucks for delivery to the existing grading and distribution facility nearby in Lichfield.
The forest free range site will officially be opened by local MP Louise Upston, who said she was delighted to have such a substantial and innovative business expansion in South Waikato.
"It is fantastic to see this significant investment in our community which will bring new jobs and opportunities to the South Waikato. With this long term investment the van der Heyden family is demonstrating their commitment to our community," Upston said.
The opening will be attended by about 100 guests including customers, staff, shareholders, suppliers and South Waikato District representatives.
The forest farm will open with 20,000 hens. When fully developed it will employ around 15 people.
Van der Heyden said the land for the forest farm was purchased in early 2018 and the first shed was completed in late 2020.
The second shed is scheduled to be completed next year and tree planting for shed three will get under way in September 2021.
Better Eggs is the combination of three proud family-owned poultry farms, Heyden Farms Limited, Henergy Cage-Free Limited and Rasmusen's Poultry Farm Limited.
Henergy pioneered cage-free barn egg production in New Zealand and Rasmusen's is a fourth-generation family farm founded in 1937.
Under the banner of Better Eggs, Heyden Farms is now pioneering free range egg production with this leading forest free range project.
Representatives of each of the original families involved in the business will be on hand to assist with the official opening of the new farm.
This includes 89-year-old Justina van der Heyden, Gareth's grandmother, whose brother and sister-in-law started Heyden Farms in the 1970s.
