"It took years to get the illegal signage off the tavern diagonally across the road on a heritage building to improve the Upper Symonds St amenity," the letter said.
Mr Chambers cited the case as an example for giving local boards a bigger say in resource consent applications, including billboard applications.
Council planner Purnima Naidu recommended the application be declined, saying: "The billboards will create a more than minor adverse cumulative visual dominance and amenity effects on the surrounding streetscape and built environment."
Ms Sinclair, however, took a different view: "The relationship of the Citta building with the character of older buildings within the Upper Symonds St character overlay area is fractured by the width of the transport corridor and this helps to ensure that the character of the area is not compromised by the location of the billboards."
She approved three billboards on the wall facing the Symonds St-Khyber Pass Rd intersection and the fourth billboard on the Khyber Pass Rd wall. The largest is 5.15sq m.
Act leader Don Brash, who owns a Citta apartment, said he had received a letter from the building management to say they were not enthusiastic about the billboard issue but had no legal powers to stop it. He said he would be angry if the billboards blocked the view from his apartment.
A lawyer acting for the body corporate, Timothy Bates, has written to the council saying it "strongly objects to the installation of the proposed billboard signs" and planned to challenge the decision.