
The Octagon
47-storey mixed-use tower on a compact central Birmingham site — 370 apartments above retail, redefining the city's residential skyline.

New build with pool, spa, cinema and resident facilities.

Quantem advised on cost, programme and contract throughout delivery. Working alongside Regal WL / Longbow, the team set the financial and risk position from RIBA 0 through final account.

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

47-storey mixed-use tower on a compact central Birmingham site — 370 apartments above retail, redefining the city's residential skyline.

Demolition and construction with retail at ground floor.

Two volumetric-MMC residential blocks (354 BtR / 223 DMR) within the wider 2,000-home Greenford Quay regeneration — one of London's largest single-developer BTR schemes.

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