Changing a controversial track up Te Mata Peak could cost up to $1 million in consultancy and landscaping fees, Hastings District Council says.
The costs for altering the track, which was created by Craggy Range winery last year, were released to a member of the public under the Official Information Act.
They show consultants helping the council decide what to do with the walking track could be paid $500,000 in fees for "technical reports, development option reports and consultation."
"This is an unbudgeted expense," the council said.
It could cost $200,000 to remove the zig-zagging Craggy Range track - which has been described by local iwi as a "scar" - in its entirety.
A further $280,000 to $300,000 would be needed to create a new summit track as proposed by the winery and iwi, after they struck a deal earlier this year.
However, other options are being considered which could cost less.
Who would pay this cost was yet to be determined, the council said in a statement.
"The source of funding is uncertain at this stage, whether it will be internal or external to council."