The document before the Committee is here:
http://www.lambeth.gov.uk/moderngov/documents/s54136/04 Coldharbour Lane.pdf
If you read the document you will see that the decision is not as dire as much of the previous discussion would suggest. And faced with the clear officer recommendation to approve, I assume the Committee decided that it would be a waste to spend Council resources on fighting an appeal.
This thing is not as simple as you are saying. The Barratts spokesperson had a side-kick who had to be introduced as a former employee of Lambeth Planning (now working for BPTW partnership - planning consultants). Quite off-putting in my view - close working relationship - beneficial to all parties. No wonder the correspondence on the matter is on first name terms.
The Barratts chap was not a smoothie at all - he was quite ruffled, and made two allegations:
1. the previous site owner [Places for People] had had no intention of "building out" the scheme. Implication: the section 106 was agreed so Places for People could realise a profit by selling on the site with planning permission. Of course this allegation fits in with Barratts claim that the project was not viable as it stood - and references were made to a viability study, especially by the Committee chair. The viability study is not in the public domain.
2. Barratts were "working with Lambeth" to produce the scheme without public subsidy, and had started work on the basis that the planning situation would be sorted out before completion. Hence the issues raised by Councillor Palmer and Bradley.
No Labour Committee councillor commented on whether Lambeth encouraged Barratts to jump-start the scheme, or issues to do with Housing subsidy in principle.
Because of questions from Cllr Mat Parr (Coldharbour Ward - Labour, but not on the committee), following on from Gramsci's very clear presentation - the figures for the actual rents proposed were revealled, giving the comparisons between the notional social rents and affordable rents. The chair then said that a further document had been tabled to the effect that the "Affordable" rents would be linked to RPI based on the given starting figures, and not allowed to rise to 80% of open market rent.
It all seemed as though the information had been coming out by drip feed. If Gramsci and Cllr Parr had not spoken and raised the issues we would not have been informed - and quite likely there would have been no assurances that the affordable rents would not be allowed to rise to the 80% level.
That is my take on the meeting. Let us see what is in the published minutes on 20th March.