The project will transform a disused box factory on Moseley Street into 57 flats and ground-floor commercial units.
BPN, appointed to the job by developer Rorcon in October 2006, said it had addressed the 'dog-leg section' of the route with a new focal point a storey taller than its listed neighbour, the Paragon Hotel and Hostel.
'This part of town is very industrial but industry has started to struggle. Residential and commercial development is a way to kick-start the economy and a lot of schemes now include commercial units,' says BPN director Richard Newman.
The wider Irish Quarter regeneration will, when complete, include over 560 apartments and 1,9002 of office space along with bars, restaurants and neighbourhood shops.
BPN has already worked on a number of schemes in the zone, including Deritend Bridge, Harrison Drape and St Anne's Court.