According to the practice, the scheme for the South London and Maudsley NHS Trust was only given the go-ahead following 'one of the most heated planning committee meetings anyone can remember.'
Among those objecting to the 1,200m 2project - which will become the largest non-residential rehab centre of its kind in the country - was former minister of sport and MP for Vauxhall Kate Hoey.
However, Lambeth's planning committee finally gave the scheme the thumbs-up on Wednesday night (14 December) after a 'nailbiting' decision, which split the members three to two.
As well as housing dedicated treatment clinics, the centre will also have counselling rooms, a needle exchange, a launderette and crèche.
'It is not often that architects can really make a difference on their own doorstep, and we are privileged to be part of this scheme,' said architect Michael Johnson.
Brixton has the highest level of problem drug users per head of population of any London borough.