And he said trends varied from one end of the country to the other.
"We find the further north we go the trends are a little bit more up to date. Some of the provinces lag a little behind but not too much.
"But we certainly see differences in building methods. For example, the way builders do the foundations around here is very different from the methods they use say in Auckland and Christchurch."
Mr Wilson said the Whanganui home they judged this week sat on a cliff looking out over the Tasman Sea.
"It's an exposed site but they've used things like copper flashing and very robust exterior cladding. I don't think there's anything here that would cause any issues. They've used things appropriately."
The House of the Year judging panels always team up an architect with a builder.
"It's an interesting task for us. We see some interesting homes and meet some wonderful people," he said.
More than 330 homes across the country will be assessed by judges before the regional winners are announced in July and August, with the Whanganui-Manawatu-East Coast awards on July 8.
The awards cover new homes and show homes, to renovations and builders' own homes.