The National Party has to give up office space in Parliament House as part of a rejig to accommodate burgeoning political parties.
Labour and National already occupy parts of Parliament House, but Labour is going to need more space for the three extra MPs it gained in Saturday's election.
National will need less space because it lost 12 MPs.
More space in the building will also be created when the Alliance, which was wiped out in the election, vacates its offices on the first floor.
But other smaller parties will not be moving into Parliament House.
"It looks as if the two parties that currently occupy Parliament House will continue to occupy the totality of it," Parliamentary Service general manager John O'Sullivan said.
In Bowen House, across the road from Parliament, United Future would probably spread over two floors to house its eight new MPs, he said. Previously, the party's one MP, leader Peter Dunne, shared a floor with another party.
The Green Party, which gained another MP, would probably also be spread over two floors, as would New Zealand First.
People would always complain about their allocations, Mr O'Sullivan said, but Speaker Jonathan Hunt had the final say over party space. "Then it's over to the party managers ... to allocate offices within that space."
Moving, which would probably start on Friday night, was a big job, he said.
"There's 30 new members coming in. That means there's 30 members who are going out, and there's all the staff as well ... These things are an upheaval."
Mr O'Sullivan expected all new MPs to be in their offices by next week.
- NZPA
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