Mr Shaw said Top Energy had moved swiftly to renovate the new Ngawha Spa as it wanted to re-open the doors as soon as possible.
"At this stage we are completing options and design works to assess the degree of work involved so I'm unable at this stage to say how much the project will cost or when the spa will be re-opened," he said.
"I want to reassure the community that the re-opening will be as soon as possible, though."
Mr Shaw said the spa had "huge potential" but it required extensive work to bring it up to the standards expected by visitors to Northland.
"This is a special place of significant historic and cultural importance. It deserves a little love, care and attention to bring it up to the standard of other attractions in the region. This is exactly what we intend to provide."