But Rebecca Fogel, Auckland Council acting heritage manager, said much of the city's heritage had been kept.
"We believe that retaining Auckland's built heritage is important and have obligations under the Resource Management Act to protect it. This protection occurs through the Unitary Plan, which regulates development of heritage places by ensuring that scheduled historic heritage places are protected from inappropriate subdivision, use, and development," she said.
"Façade retention projects are extremely complex and each case must be considered on its merits. When determining whether façade retention projects are an appropriate heritage outcome, the relevant heritage rules and reasons for scheduling, the condition of the building, the architectural design of the new proposal and the underlying zoning must all be considered."
Heritage experts might disagree about whether heritage values were protected, she said, but the resource consent process was based on whether the Unitary Plan objectives were met.
"The former Dexter & Crozier building at 51-53 Albert Street and the Yates Building at 13 Albert Street are both scheduled as Category B places. In both cases the interiors are excluded from scheduling, so it is just the exterior of each building that is protected. At 51-53 Albert Street, consent was recently granted for partial demolition of the heritage building and construction of a new tower," she said.
"The Yates Building was still in the pre-application stage, and the design has not yet been finalised or consented, she said.