According to the Architects' Journal whose offices would be affected by the planned demolition along with the London studio of C.F. Møller Architects, the new Piercy&Co-designed building aims to address "the challenges of climate change by creating an ultra-low carbon building and placing sustainability at the heart of the project." The developer promised a 50% reduction in operational carbon emissions when compared to others currently under construction and said an adaptation scheme was explored for a year before being replaced by the plan for new construction.

"Decisions to replace buildings like this aren’t straightforward and shouldn’t be taken lightly," an architect's brief provided to AJ stated. "We think our proposals are the right move forward for Telephone House and will create an exceptional new workplace for a range of businesses — including new affordable workspace for local businesses — and an exciting and sustainable future for the site and this part of the city."