The county council said there is nowhere else for them to go.
Councillors granted planning permission for a three-storey R&D site.
Reinforced Autoclaved Aerated Concrete (RAAC) was used to build the hospital roof.
The deadline for a decision was set for Saturday, 12 October.
A new office block will be added - but councillors had concerns.
The wall along the edge of the bank needs to be replaced.
The county council has received 66 applications for the lower speed limit.
Work to refurbish the courts is ‘controversial’.
60 affordable homes will be included.
Views from supporters and opponents were heard by the committee.
However, concerns have been raised about the new location.
An inquiry was held in January.
Councillors made claim while debating yellow line restrictions for Riverside.
A multi-storey car park will also be built.
The authority is proposing to demolish the blocks and build 90 homes in their place.
And GCP stressed P&R sites are not only about drivers.
Councillors heard concerns over parking.
And it will now explore mixed tenure approach to reduce financial risk.
Dr Mike More says it would continue to act as a general hospital for the city.
Referrals to Addenbrooke’s and the Rosie grew by 660 in July.