Senior building control officer at Birmingham council Roger Hassam said the unique partnership was formed to ensure the new major development was “safe, accessible and energy efficient”.
He said Birmingham had offered its expertise to the project – being developed by Land Securities and Hammerson – following work on substantial schemes such as the Bullring and Rotunda.
Bristol has then inputted its local knowledge on issues such as flood protection levels, ground conditions and drainage systems into the reporting process.
Mr Hassam said: “We have worked closely with Bristol City Council building control on this project and our relationship is first class and one of respect for each others’ role.”
Bristol chief building control surveyor Andrew Little added: “This partnership has provided the developers with a unique blend of experience and expertise that they and the public can have maximum confidence in.”
The retail-led mixed-use scheme is due for completion in September.