The High Court had ruled both actions were unlawful, however the Court of Appeal has partially upheld the appeal of the Minister for Canterbury Earthquake Recovery and the chief executive of the Canterbury Earthquake Recovery Authority (CERA).
Quake Outcasts' lawyer Grant Cameron said the court's announcement was a vindication of their court battle.
"At the end of the day, now we've had two courts say that the offers that they were made were unlawful.''
The Quake Outcasts wanted 100 per cent of their properties' 2007 valuation, Mr Cameron said.
"There's no lawful justification for them to get anything else.''
Earthquake Recovery Minister Gerry Brownlee said he was pleased with the court's finding about the creation of the red zone.
"We also accept the court's view that in relation to vacant and uninsured improved properties on the flat land in Christchurch we now need to review whether our earlier decisions were consistent with the purpose of the Canterbury Earthquake Recovery Act.''
A review process would be developed over the coming days and submitted to the court, Mr Brownlee said.
Meanwhile, the legalisation of the red zone will end months of waiting for Port Hills residents, he said.
"We expect to have zoning review decisions conveyed to Port Hills property owners and publicly available by the end of this week.''