On top of the generous contribution Lowmac Properties, a development company co-owned by the Mackersey and Lowe families, put in another $30,000.
"It's also about giving back to the community which has supported our company and my father's before that, through working with us as staff or clients," Mr Mackersey said.
As a fifth generation family member Mr Mackersey said while the history of the region is very important to the family, it is also important to look forward to the future.
The tiniest member of the family, 7-month-old Scarlett, looked very happy about the announcement as she was carried through the almost-complete park on Friday.
She will be the seventh generation to grow up playing in the park.
The trust's contribution would be ongoing, with Mr Mackersey saying there would be further donations that would help fund additions to the park.
Hastings mayor Lawrence Yule said the trust's funding was a "fundamental cornerstone" of the project.
"It gave us confidence that we could raise the funds for all the extras we wanted to put into the park. It is an incredibly generous donation and our community will feel the value of it for many years to come," he said.
The last of the playground equipment, safety matting and paving will be completed over the next couple of weeks and still to come are more shade sails, picnic tables and chairs and table tennis tables.