The New Zealand Timber Industry Federation said log prices had already risen by 25 percent to the local market over the past five years and sawmills are preparing for further predicted log cost increases over the first half of 2018.
"Logs are a sawmill's biggest single cost so the financial impact is significant," a Federation spokesman said.
"Local sawn timber prices have not kept pace with the recent log cost increases. Timber prices have risen by just 7 per cent in the last five years."
New Zealand exporters have spent decades pushing Radiata Pine as a species and product.
Overseas buyers' increased understanding of the many potential uses of Radiata Pine is fuelling the demand and making Radiata Pine a preferred species in many cases.
The New Zealand Timber Industry Federation said that timber prices will increase as sawmills look to secure sufficient log supply to keep mills running and to recover the increased log costs.
Buyers of finished timber products could anticipate future price increases.