Donated items include more than 20 beds, 10 sets of drawers and bedside tables, four tables and chairs, two lazy boys, one fridge and lots of bedding.
Editor Rachel Ward said there have been lots of other offers from people who can't donate but would like to help, and an electrical firm had offered to carry out electrical work on the portacoms.
The offers are mostly from Northlanders, but have also come from South Auckland and as far away as Australia.
"The response has been phenomenal," Ward said.
"I've been quite heartened by the fact people want to help and try and make life better for some of these people.
"They recognise there is an issue in our backyard. I'm proud of Northlanders and the way they've come forward."
Rhonda Zielinski, who runs the Whare to the Whenua scheme, which delivers portable cabins to whānau land, said the feedback she's had to the Hidden Homeless series has been "fantastic".
"It just shows that our community care about each other.
"We've got very generous people.
"It's like one man's rubbish is another man's treasure and it's a good way to upcycle. We all have things we don't need, which we can pass on to others.
"The next 10 portacoms we give out we know we've got a bed for every single one."
Zielinski has also had an offer from a new company called Northland Cabins, which has donated a cabin to rent for one year.
The rent from the cabin will allow the trust to save up and buy another portacom.
Zielinski said she already has a kaumātua in mind who will benefit from the donation.
He lives in a rural area near Kaikohe in a "dilapidated old house his social worker told me wasn't even fit for a rental," she said.
"But because he was homeless they let him live there."
The kaumātua has his own whenua, so the portacom will be located there, Zielinski said.
