Aquinas College Board of Trustees chairman John Mackay said the opportunity was about "establishing goodwill between the college and the intended development".
"We would have to run a fair number of sausage sizzles to make the amount of money we will potentially make out of this."
The Goodwins' generosity was absolutely wonderful, he said. Others had also come on board to support the college. These included GJ Gardner Homes in Tauranga that had offered to build the home on favourable terms and use qualified sub trades associated to the college.
The four-bedroom contemporary, modern house would have a 204sq m floor plan that featured open plan living, double garage, ensuite and walk-in wardrobe and pantry.
"It is nicely appointed with raked ceilings, so it's a lovely looking home," Mr Mackay said.
Money raised would go into "something substantial", that left a legacy, he said. The main idea at the moment was a multi-purpose facility that serviced the needs of performing arts.
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PTA chairwoman Lee-Ann Taylor said it was overjoyed with the immediate response from members of the Aquinas community.
Parents had offered site works, geotech, engineering, curtains, floor coverings, landscaping and plants, plumbing supplies, outdoor furniture.
"We are mindful that parents and caregivers in today's world are hugely committed in lots of different areas and often stretched for time so appreciate any help, goods or services that they give us.
"We would still love help with electrical work, plastering, painting, appliances, gas fitting absolutely anything that goes into a new home."
Aquinas College principal Ray Scott said the school was trying to raise funds for projects that were "outside what the ministry can provide for us".
The project would provide a great boost, he said.
St Thomas Estate:
* Boutique subdivision, with section sizes ranging from 405sq m to 896sq m.
* 65 sections available across two stages of development.
* Designed for security and a strong sense of community.
* Adjacent to Aquinas College at Pyes Pa.