The potential cost is still being considered, with the Chateau bathrooms likely to cost between $2m and $3m and the Wairakei upgrade costing anywhere from $500,000 to $15m , depending on the scale, he said.
The company's top priority is the public areas at Wairakei Resort to help lift its level of corporate conference back to where they were before the GFC dented the market as struggling businesses cut spending, he said.
The timing is still being finalised but it would ideally start in the first half of next year and the work may be completed in stages, he said.
For the Chateau, the biggest impact from the GFC was felt in the domestic FIT market as people closed their wallets and chose not to take a ski holiday, which is the major drawcard for the Chateau over the peak winter months.
Dyer said the outlook is now positive.
"We are in the process of doing our forecasting and budgets for 2017 at the moment and forward bookings in the system are very strong, stronger than what we actually had this year, and it's getting to the point now however where demand is meeting availability so the increases aren't going to continue at the rate they have been due to the fact that we can't meet the demand."
Room rates, which had experienced little increase over the past 10 years, had started to creep up in the last 18 months and were likely to continue to rise as the company had no plans to expand its hotels, he said. Wholesale rates for international groups were the most likely market segment to see an increase amid tight accommodation supply in the Taupo area, he said.
The looming investment ahead means the New Zealand company is unlikely to pay a dividend to its owners anytime soon.
"We do have our own cash reserves but what we are talking about would take us higher than what we have so at this stage we won't be paying any dividends this year or next year I would say until that is fully fleshed out and the picture of that in terms of what we would be looking at capital wise becomes clearer."
The company's accounts showed it last paid an annual dividend of $500,068 in 2013.