"It probably makes sense, given the prices."
However, he cautioned against seeing the dip as part of a long-term trend.
"I don't expect it to be a massive change with first-home buyers dropping out of the market."
QV national spokeswoman Andrea Rush said there were too many factors at play to say whether this month's dip in first-home buyer sales would continue.
However, she said the strong growth in many parts of New Zealand that were continuing to push prices up made it harder for first-home buyers.
"They have also been facing strong competition from investors wanting high yields from entry-level property in the more affordable regions."
She said new LVR restrictions requiring a 40 per cent deposit for investors had eased pressures somewhat in the more expensive markets such as Tauranga and Hamilton.
"But in places such as Rotorua, the Hauraki District and Dunedin where the entry level is lower they are still facing competition from investors in lower priced areas."
Rush said having banks continue to tighten lending criteria for investors but ease criteria for first-home buyers could help those not already priced out of the market, "but not if home values continue to rise at the pace they have sold since 2007".
Rush said work to increase supply would also be beneficial as would greater research into the level of foreign ownership in New Zealand's residential housing market.
"Allowing more suppliers in the New Zealand building materials industry and reducing the compliance costs through local government of new builds may also assist in seeing the supply of new homes grow and this also could also help affordability over time.
"Collecting better data to understand the level of foreign ownership in the New Zealand residential housing market may help us understand what impact this is having on house price growth here."
Rush said this could drive further measures that could help affordability over time.
"Such as whether to introduce other property taxes common in many other countries such as the foreign buyers tax that Vancouver introduced in July last year which is leading to a reduction in house prices there, as well as other measures such as capital gains tax, stamp duty and land tax."
Reinz CEO Bindi Norwell said, "In light of the fact the data in question is January data, with January being one of the less popular months for housing activity due to the holiday period, we would recommend allowing for three months of data before making any predictions