I have had a look on the Planning Application portal for the Affordable Housing Pro Forma and no luck. I then had a look to see if there was any mention of it in the Design & Access Statement and have been surprised as to what it has turned up, it states:-
' On-site provision of Affordable Housing is incompatible with the market type and context of the apartments being provided. The application is for the re-development of a brown field site with a significant acquisition cost, requires a high standard of design/materials, is difficult/expensive to develop and has scale/massing and servicing constraints. These influences impact upon the propensity to provide affordable housing. Any liability to make a commuted sum payment is affected by the above when modelled against expected returns. Provisional data and dialogue indicated limited potential for commuted sum payment and a confidential affordable housing Pro Forma is submitted with the planning application with a supporting (independent) costing evaluation'.
Hugo, it looks as if you won't get your answer as the AH Pro Forma is CONFIDENTIAL for some reason and from what else has been stated it is highly unlikely any affordable housing commuted sum will be payable.
It is mentioned again in another area of the application and states:- 'A confidential Viability Assessment Pro Forma is submitted with the application. The results indicate that the scheme is unlikely to fall eligible for AH payment. Focus has been upon securing the redevelopment of a problematic brownfield site in a sensitive area.'