Halls Group purchased the majority shareholding of Icepak which included the Koppens Rd site in February, but sold the land three months later because residents did not want another business at the site.
Waikato District Council has now rezoned it for lifestyle property.
Bayleys commercial manager Richard Graham said Grattan intended to subdivide the site for housing.
"That would be great for the community. It's in keeping with the surrounding area and I think a lot of the neighbours would be quite happy to see that happen," Mr Graham said.
Under the district plan at least three lifestyle blocks are possible at the site, and a fourth with an exemption, Mr Graham said.
Resident Philippa Stevenson said she was upset and disappointed Grattan bought the Koppens Rd land.
"I think his insensitivity and callousness is breathtaking.
"He's flashing his cash to pay $865,000 for that site when they made part of their company that owned that site insolvent, at the time when they were being asked for compensation for the eight firemen."
At the time of sentencing in 2009, Icepak Coolstores indicated it was insolvent after paying for the clean-up costs of the Tamahere site.
Neighbour Arnold Koppens said ill feeling toward Grattan still lingered.
Grattan did not return Herald calls.