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Thayer Street
17,250 ft² office + 8,500 ft² retail
Façade retention along Marylebone Lane with demolition of the existing building.
Howard de Walden Estate
London

Birmingham's tallest office building — a landmark 26-storey scheme with a signature rooftop restaurant overlooking Victoria Square.


“A commercial office project of this scale demands forensic cost discipline from the first conversation. Quantem held the line through the whole programme.”

Façade retention along Marylebone Lane with demolition of the existing building.

Mixed-use refurbishment with five refurbished and two new floors.

Strip out with 9th-floor roof extension and atrium infill.

From RIBA 0 viability to final account — our partners are ready to take the call.